Public Lab Research note


This is an attempt to replicate an activity.

Idea for<$5 analog thermal fishing bob

by warren | | 1,658 views | 1 comments |

Read more: publiclab.org/n/10538


Using 555 timers and no Arduino... Only red/blue LEDs!


1 Comments

I take it the idea is to get the red/blue flashing really fast, making a gradient red-->magenta--->blue depending on the resistance of the thermistor in the 555 control circuit?

I like this a lot. Thermistors are non-linear in their response, so tuning this to different temperature ranges is going to require some thinking, but its a really excellent idea.

Is this a question? Click here to post it to the Questions page.


Login to comment.

Public Lab is open for anyone and will always be free. By signing up you'll join a diverse group of community researchers and tap into a lot of grassroots expertise.

Sign up