I assembled my Moteino circuit inside the KillAWatt. Everything fits very nicely and the LED blinks every ~2 seconds, and data finds its way to my RaspberryPi where EmonCMS records and graphs it nicely. At the last minute I found a leftover TMP36 analog temperature sensor that I had around, and thought – why not add it to the Moteino and report temperature along with power readings?
I feared the TMP36 sensor alone would draw too much power (even an extra constant 2mA is too much for my KAW!). But it turns out it’s a very low power sensor (just 0.05mA). Since Adafruit has a very nice demo and code for TMP36, I won’t replicate the details here, you can check them out at Adafruit’s learning system.
Now I’m getting temperature, voltage and current waveform readings from my KAW.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.