Data loggers can help to record data from a sensor over time -- often over days or weeks, or even months. There are a variety of data loggers available, both commercial and open source. Each entry from a logger -- stored on, for example, a memory card -- may have a timestamp and some data loggers can record location from a GPS as well. Data loggers can be [paired with specific sensors](/wiki/water-sensors), and an [enclosure](/wiki/sensor-enclosures), as part of a test. ## Design constraints What are we trying to do that existing commercial data loggers don't do, or don't do well enough? We're looking for designs that optimize: * low cost (i.e. <$100) * easy to use * easy to build or buy * weatherproof (possibly) * waterproof (possibly) * Arduino-compatible (so that they're compatible with the huge [Arduino](http://arduino.cc) ecosystem) ## Options Most of the below options are #arduino based, and all are open source: [wikis:datalogger] [notes:datalogger-option] Edit the [full spreadsheet here](https://docs.google.com/spreadsheets/d/1zBcLpN4PZIATLh6aDR7mwCoejWryLYYm6cJD38MqT58/edit) (by @cfastie) **** ## Questions [questions:data-logging] ## Activities We're hoping to collect a set of activities you could do with several different data loggers here, such as an example "field test," so please add help us by adding activities which can be performed with different data loggers: [activities:data-logging] **** ## Power How do you keep a data logger going in the field? Solar, big batteries, even run an extension cable out? We're developing resources on powering your data-loggers here. ## Power Questions [questions:data-logging-power] ## Activities [activities:data-logging-power] **** ## Waterproof enclosures The #riffle project -- and others -- have explored a lot of ways to make cheap waterproof enclosures for data loggers, but where wires and sensors can still stick out. Here are a some notes and prototypes under the tag #data-logger-enclosures. You can also visit the page on [sensor enclosures here](https://publiclab.org/wiki/sensor-enclosures) [notes:data-logger-enclosures] ...
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cfastie | "I decided not to drop into the rabbit hole of applying time series analysis to these data. There does appear to be some periodicity present, but I ..." | Read more » | almost 7 years ago | |||
warren | "Sorry to miss some of this as I was away last week, and just catching up again now. This looks really great! Sorry if I missed it, but were you abl..." | Read more » | almost 7 years ago | |||
MadTinker | "@shanlter Thanks for the tip about Kyoritsu Labs. I'll check them out. " | Read more » | almost 7 years ago | |||
MadTinker | "@rockets Got the cables today. Thanks! " | Read more » | almost 7 years ago | |||
cfastie | "I have a hypothesis about the different results obtained with two BME280 sensors on the flying rig. A difference of 3° to 4°C is more than should b..." | Read more » | almost 7 years ago | |||
rockets | "@Madtinker I have send a mail to you, let me know the order no. so that I can put the cable to you. " | Read more » | about 7 years ago | |||
MadTinker | "@rockets Have you had a chance to check on the cables for the isolation boards? I very (very!) much appreciated the loan of the two boards, but wit..." | Read more » | about 7 years ago | |||
shanlter | "Your description about Creede is fascinating, I never heard about this place, it looks so beautiful!! And I am very impressed on what Willow Creek ..." | Read more » | about 7 years ago | |||
warren | "This is fantastic. Thanks!! " | Read more » | about 7 years ago | |||
gretchengehrke | "@MadTinker, this is really exciting, and such important work for the promotion of community-collected data. Since the data streams you are discussi..." | Read more » | about 7 years ago | |||
stevie | "This is great! Looking forward to reading more. " | Read more » | about 7 years ago | |||
stevie | "@stevie awards a barnstar to MadTinker for their awesome contribution! " | Read more » | about 7 years ago | |||
MadTinker | "@rockets Yeah, I was going too fast and assumed that the parts list was good. I still need to order the ORP SEN0165. If you can tell me the SKUs fo..." | Read more » | about 7 years ago | |||
rockets | "@MadTinker obviously you order a wrong one, you should order sen0169, I will help you to solve it. Don't worry. " | Read more » | about 7 years ago | |||
MadTinker | "@shanlter @rocket Unfortunately, I was/am in a time crunch and just followed the parts list put together by @shanlter without cross checking it wit..." | Read more » | about 7 years ago | |||
MadTinker | "@shanlter Awesome, Thanks for both! " | Read more » | about 7 years ago | |||
shanlter | "@MadTinker, I uploaded a pdf to github. There are 2 drawings, one is the mounting plate which should be printed by a laser cutting machine. It's no..." | Read more » | about 7 years ago | |||
MadTinker | "@shanlter Would you mind posting a PDF version of your DWG layout that you have on GitHub? For some reason, none of my code can read the file. Tha..." | Read more » | about 7 years ago | |||
MadTinker | "@rockets Yes! that is exactly what I was concerned about. I'm too new at this to figure out what's an intelligent Uno question. I think a fundament..." | Read more » | about 7 years ago | |||
rockets | "hi @madtinker, I know what you worry about it. I will say that the power bank is oK, since the main board is arduino uno. The power input will be 2..." | Read more » | about 7 years ago | |||
shanlter | "Hi @MadTinker, I was told that 5V is fine, the board can automatically convert the voltage. " | Read more » | about 7 years ago | |||
MadTinker | "@shanlter @rocket Thanks for the suggestion of the power bank. My biggest question, particularly related to the power bank in the link, was the vol..." | Read more » | about 7 years ago | |||
shanlter | "Hi @MadTinker , yes you are right, the battery I'm using is the one in your link. But you can use any kind of portable battery to charge your devic..." | Read more » | about 7 years ago | |||
rockets | "@MadTinker I think you can use that, but if you have a power bank, that also working. " | Read more » | about 7 years ago |