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ORP / pH / Temperature Data Logger
Skim Board Shelves
R3: Rolling Red Robot
this is awesome! can you teach me how to command my SD and RTC to log data after every two hours? thanks for your reply :)
hello my friend!im making a very similiar project, but i have a question, how do you calibrate de orp probe? in the manual says to DO NOT PRESS the calibrate button when the prove is connected, but when you want to change the offset, in the progaming code, to get zero drift voltage, the manual says that you have to PRESS the calibration button and see in the serial monitor a reading in milivolts that concerns the offset value we are looking for, i hope you can help me, or any body could, a hug! and thanks!
there is a sensor called sen0161 ph metter, in www.dfrobot.com, this one includes a module whit the comparator that you are looking for, ready to get conected with arduino, there also is the code and everything you will need.http://dfrobot.com/wiki/index.php/PH_meter(SKU:_SEN0161)
Scale Model Oil Platform
can i delete the lineSerial.begin(38400); and use the pin 0,1 as normal input/output?
can i disable the Serial.begin(38400); and use the pin 0,1 as normal input/output?
How to Do Arduino-Controlled Intelligent Time-Lapse Photography
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