Solar air quality sensors

A few moons ago I built a BalenaOS deployed set of Enviro+ air quality sensors for my Raspberry Pi Zero. It’s been sitting indoors monitoring our air for a while, waiting for me to build an environment proof case and solar for it so I could deploy it outside. Parts Code Having some annual leave …

Water Quality iOS app

LoRa is great when there’s a network available, but for in-person water quality readings I thought it’d be convenient to add Bluetooth. I had a spare BLE Nano v2 sitting around, so decided to wire that in. It acts as a relay, broadcasting everything that the Water Quality sensor outputs over serial, and pushing it …

Debugging LoRa connectivity

After successfully upgrading the firmware of my Uno’s RN2903 LoRa chip, I was still having trouble connecting to The Things Network and seeing a lot of these lines in the serial monitor: I’d tried five different locations across two states, so was getting pretty paranoid that it was either something I’d done in my Arduino …

Atlas Conductivity K 1.0 to TTN Uno

Now that I know the sensor works with a standard Arduino Mega, it’s time to try and get it running on The Things Uno. My first attempts getting the Atlas Scientific Uno code running on The Things Uno didn’t get very far. It seemed to be a problem running SoftwareSerial on the default pins 2 …

Atlas K 1.0 water conductivity sensor

Connecting an Atlas Scientific Conductivity K 1.0 sensor to an Arduino. First of all, let me just say that I adore the packaging of the EZO conductivity and power isolation circuit boards. They were a lot smaller than I expected, which is a nice surprise, as it’ll mean a smaller end product once I’ve packaged …