Revisions for Coquí: A Simple Water Conductivity Sensor
| 41 | akshaya |
June 25, 2016 15:58
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming from Public Lab Press in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Step by Step Instructions for Making the Coqui's ProbeThe probe is the part of the coquí that you dip in water to measure its conductivity. The coquí actually passes a low-voltage electric current through the water and the two screws in the water bottle cap measure the resistance of that current. You can fashion a simple DIY probe using the following materials:
Cut the top part off the water bottle using the scissors or knife
Screw the two screws into the top of the water bottle.
Attach the alligator clips leading from the coquí to the bottom of the two screws
Now you have your probe!Learn more about the Coquí in context
Are you more advanced? Check out this circuit diagram
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| 40 | akshaya |
June 25, 2016 15:50
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming from Public Lab Press in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Step by Step Instructions for Making the Coqui's ProbeThe probe is the part of the coquí that you dip in water to measure its conductivity. The coquí actually passes a low-voltage electric current through the water and the two screws in the water bottle cap measure the resistance of that current. You can fashion a simple DIY probe using the following materials:
Cut the top part off the water bottle using the scissors or knife
Screw the two screws into the top of the water bottle.
Attach the alligator clips leading from the coquí to the bottom of the two screwsNow you have your probe! Learn more about the Coquí in context
Are you more advanced? Check out this circuit diagram
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| 39 | akshaya |
June 25, 2016 15:04
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming from Public Lab Press in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Step by Step Instructions for Making the Coqui's ProbeThe probe is the part of the coquí that you dip in water to measure its conductivity. The coquí actually passes a low-voltage electric current through the water and the two screws in the water bottle cap measure the resistance of that current. You can fashion a simple DIY probe using the following materials:
Cut the top part off the water bottle using the scissors or knife[PICTURE] Screw the two screws into the top of the water bottle.[PICTURE] Attach the alligator clips leading from the coquí to the bottom of the two screws
Now you have your probe! Learn more about the Coquí in context
Are you more advanced? Check out this circuit diagram
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| 38 | akshaya |
June 25, 2016 14:51
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming from Public Lab Press in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Learn more about the Coquí in context
Are you more advanced? Check out this circuit diagram
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| 37 | akshaya |
June 20, 2016 05:55
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming from Public Lab Press in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Learn more about the Coquí in context
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| 36 | akshaya |
June 20, 2016 05:47
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming from Public Lab Press in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Learn more about the Coquí in context
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| 35 | kanarinka |
June 19, 2016 19:43
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming from Public Lab Press in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Learn more about the Coquí in context
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| 34 | kanarinka |
June 19, 2016 19:42
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something other than water conductivity? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Learn more about the Coquí in context
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| 33 | kanarinka |
June 19, 2016 19:41
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something else? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE!Learn more about the Coquí in context
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| 32 | kanarinka |
June 19, 2016 19:35
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something else? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Who is this for?Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming in Fall 2016). DurationAssembly will take around 30-45 minutes for a novice, including troubleshooting and debugging. Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE! |
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| 31 | kanarinka |
June 19, 2016 19:31
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor designed by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the water conductivity is higher and lower frequency sounds when the conductivity is lower. Want to measure something else? With simple modifications a Coquí can measure temperature, ambient light and LED light. Check out Don's original post to learn how. Buillding a coquí is a great way to introduce principles of water monitoring, DIY hardware, and sensors to new audiences. @kanarinka and John Keefe use coquís to teach workshops in sensor journalism. The coquí is featured in the Educator's Guide to Sensor Journalism pamphlet by @kanarinka (forthcoming in Fall 2016). Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE! |
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| 30 | akshaya |
June 14, 2016 15:39
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE! |
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| 29 | akshaya |
June 14, 2016 15:38
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE! |
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| 28 | akshaya |
June 14, 2016 15:36
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE! |
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| 27 | akshaya |
June 14, 2016 15:35
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE! |
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| 26 | akshaya |
June 14, 2016 15:25
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC.
Connect pin #8 to VCC.
Connect pin #2 to pin #6.
Connect the speaker to pin #3 and GND.
Connect pin #3 to some row.
Connect pin #2 to a row right below previous.
Add a capacitor from previous pin to GND.
Connect pin #1 to GND.
Using a photocell as a sensor: add the photocell between the previous two wires.
Connect the battery (positive / red to VCC, negative / black to GND).
Place an LED between VCC and GND to make sure there's power, when debugging (Optional).
DONE! |
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| 25 | akshaya |
June 14, 2016 12:12
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard. Connect pin #4 to VCC.
Connect pin #8 to VCC. |
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| 24 | akshaya |
June 14, 2016 11:54
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
Connect pin #4 to VCC |
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| 23 | akshaya |
June 14, 2016 08:57
| over 8 years ago
This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. A Coqui can measure conductivity, temperature, ambient light and LED light. Coqui BBv1.0 is a version of the Coqui that is made on a breadboard, with just a few simple parts. Learn how to make one below! Ingredients
Resistor (R) tunes the frequency of the 555 output (which we'll be hearing via a speaker) For low conductivity solutions, 0.1 uF in a capacitor (C) is a good range to use. For higher conductivity solutions (like salt water), 1.0 uF, or even 10.0 uF, might be better values to use, in order to keep the output frequency in the audible range. The frequency of the output is a function both of the resistance, 'R' (which can be either a resistor, or some water between two electrodes, or a photo-resistor, or a thermistor, or a potentiometer ... anything that will provide an electrical connection, with some resistance), and a capacitor, 'C'. The frequency of output is given by: 0.7/(R*C). Step-by-step guide to assembling the CoquíAttach the 555 chip on the breadboard.
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| 22 | kanarinka |
April 15, 2016 14:41
| over 8 years ago
[picture here] This is a beginner's guide to assembling the CoquíThe Coquí is a simple water conductivity sensor by @donblair that is designed for use in an educational context. The coquí is a simple circuit assembled on a breadboard that has a speaker that outputs high frequency sound when the conductivity is higher and lower frequency sounds when the conductivity is lower. Who is this for?Step-by-step guide to assembling the Coquí |
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