Wireless Sensor Battery Life 2 Years On

Back in November 2011 when I made my first ATmega328 based wireless temperature sensor node I did a rough calculation estimating that it would last 2 years or more on a couple of AA batteries. That first node was decommissioned after a few months but the second version, also based on an ATmega328 is still […]

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 […]

Using Raspberry Pi as a base station for TinyTX

The guys at OpenEnergyMonitor were kind enough to send me a prototype of their new RFM12Pi board a few weeks ago, this handy little kit allows our favourite low power radio board to be connected to the immensely popular Raspberry Pi.  This makes setting up a tiny little server for receiving data from the OEM […]

TinyTX ACK Support Added

As I’ve been adding more and more TinyTX wireless sensors one thing that was bothering me was the lack of ACK support in the system meant that if the base station was busy receiving a packet from one node then anything sent from another node at the same time would be lost. By adding a […]

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 […]

An ATtiny based Wireless Temperature Sensor

I was poking around in the JeeLabs RF12 library recently (now part of JeeLib) and noticed that it now supports the ATtiny microcontrollers – it’s what the new JeeNode Micro uses, which got me thinking about even smaller, simpler wireless temperature sensor modules again. If you aren’t familiar with the Atmel TinyAVR range of microcontrollers they are […]

Further extending the TempTX battery life

I’ve been struggling for thinking and tinkering time this week due to a bad cold that has totally wiped me out but I did have some more thoughts on further reducing the power usage of the TempTX V2. The first one is quite simple and will only have a minor effect but only needs a […]

TempTX V2 Wireless Temperature Sensor Module

The original wireless temperature sensor module that I built at the end of October is still happily working away proving that the concept of a very minimal wireless node works and that it is quite happy running from two AA batteries. There were a couple of factors that influenced the previous boards design that meant […]

Wireless Temperature Sensor Module

UPDATE: There is a new improved version of this here: TempTX V2 Wireless Temperature Sensor Module and a new mini version using the ATtiny84 here. As I mentioned in my last post I wanted to get the GLCD display that I built for my OpenEnergyMonitor system to transmit the reading from its internal temperature sensor so that the Nanode could […]