Introducing OSWIN, the Open Source Wireless IoT Node

OSWIN is the only slightly contrived acronym for my new Arduino compatible Open Source Wireless IoT Node based on the ATmega1284P AVR microcontroller. I blogged about using the ATmega1284P with the WIZ820io ethernet module last year and was subsequently sent two prototypes based on the same combo to evaluate, the MAX1284 and the Air Sensor Hub. For […]

TinyTX3 Wireless Sensor Board

Since I put the files for the first PCB version of my TinyTX wireless sensor node online in June I’ve heard from people around the world who have had their own boards made which is really encouraging, especially as it was my first PCB design and was mainly done just to learn how to use the Eagle CAD […]

Air Quality Egg – Community air quality monitoring

Way back in March 2012 I backed my first Kickstarter project, the Air Quality Egg from Wicked Device, a project to build a community-led air quality sensing network. It has been a long time coming but despite Royal Mail’s best efforts it has finally arrived. From the Air Quality Egg website: “A community-led air quality sensing network that […]

RFM12B Breakout Board

I’m still waiting for the PCBs for the latest revision of my TinyTX board to arrive but these breakout boards for the RFM12B transceiver which I actually ordered on the same day ended up getting sent a few days ahead of it for some reason, maybe it is because I went for a red solder […]

Using the TinyTX with the DHT22 Temperature/Humidity Sensor

I covered some of this in the comments on my last post but thought it made sense to do a separate post detailing it. The DHT22, also known as the AM2302 and RHT03 is a relatively cheap combined digital temperature and humidity sensor that with a little manipulation will go straight onto my TinyTX sensor […]

TinyTX Wireless Temperature Sensor PCB

For the latest iteration of my wireless temperature sensor (compatible with OpenEnergyMonitor, Nanodes and Jeenodes) I decided it was time for a proper PCB. While it’s not too much hassle to make one from stripboard, botching the RFM12B transceivers onto it is a bit of a pain in the bum and a custom PCB makes it […]