Category: Sensors
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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,…
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CO2 sensor and iOS/macOS app
A photo of the CO2 sensor in a 3D printed case, next to an iPhone X running the iOS app to record readings and locations. Building a portable CO2 sensor with data logging, Apple Siri/HomeKit integration, and an iOS/macOS app.
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Sending data over LTE
The Notecard connected to the Raspberry Pi A+ with an Enviro+ sensor hat Sending air quality sensor data over a mobile LTE network with a Blues Notecard.
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Storing sensor data
Success! Enviro+ is now posting its sensor data to InfluxDB Cloud. Choosing a timeseries database to store lots of air quality sensor data.
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Enviro+ air quality sensors
Pimoroni Enviro+ air quality sensors exporting their data to Prometheus and graphed by Grafana.
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Air quality sensor network
Arduino Bluetooth/iOS air quality sensors Learning from the previous air quality sensors we built, I'm keen to provide some time to plan and deploy a prototype of some new hardware, and here's where I need your help to fund the initial build.
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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…
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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…
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Atlas Conductivity K 1.0 to TTN Uno
Processed with VSCO with f2 preset 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…
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Atlas K 1.0 water conductivity sensor
Processed with VSCO with f2 preset 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…