Dave Berkeley’s recent home power monitoring blog post got me thinking: How much does a DIY power monitoring system cost How accurate it is I had a friend ask me how much my current power monitoring system costs. I really didn’t had…
‘Funky’ sensor in store
I have received permission from Tobias Floery to offer my version of the Funky Sensor in the store. I will be offering three options PCB only – for those that can do the soldering and only need the PCB “Regular” Funky…
Hooking my wireless doorbell to the Internet
Here is a fun project: hook my wireless doorbell to the Internet and get SMS when someone rings it. Useful when I am not at home or am in the backyard and can’t hear it, but I carry my mobile…
RaspberryPi+TinySensor as EmonBase
I now have working setup with a TinySensor + Rasberry Pi acting as an emonbase. I previously used PHP for this task, but the PHP serial class seems to have some issues on the transmission part plus it was a…
Dropbox shell script for RaspberryPi
Let me share a useful find: Dropbox Uploader is a BASH script which can be used to upload and download files from Dropbox, an online file sharing, synchronization and backup service. Since I am constantly switching SD card images, this is…
Solar Funky
I thought it would be a nice experiment to put the Funky in a solar-powered garden lamp. I got one recently with the intention to use it for that particular experiment, it is quite cheap, costs a little over one…
64 800 transmissions
The CR2032 battery powered TinySensor that I had set up to monitor my house’s power consumption has stopped sending packets yesterday afternoon, totaling 7.5 days of transmissions every 10 seconds. That would mean 6 * 60 * 24 * 7.5 =…
Getting Funky
Catchy title, right? I ordered some Funky Sensor PCBs after few days ago and got them today. Just to recap – this is an extremely small Attiny84 based sensor with RFM12B module on top. I can’t stress how small it…
CR2032 powered “current only” remote monitoring
I am experimenting these days with one of the old versions of the TinySensors trying to see how long it can go with some heavy duty tasks, powered only by a single CR2032 battery. I wrote a small sketch to…
TinySensor Wiki
I have created a TinySensor Wiki, it is available from the top menu and this link. I will be extending it as time permits.
TinySensor 1.4 PCB is ready
I now have the TinySensor v1.4 in my hands, there are some small improvements over the version I last published, most notably that I added a 3.3V FTDI connector. You can’t use it to program the Attiny (..yet, I am…
Setting up Arduino IDE for working with Attinys
There are a number of posts on the subject already, but I’d like to share my experience as well. Here are the steps I undertook to set up my environment for working with Attiny84 and Attiny85: As a first step,…
DIY soil moisture sensor project
I have been working on a small DIY soil moisture sensor project the last couple days, mostly inspired by the gardenbot project. The idea is to add it to my greenhouse monitoring project. I chose to make my own sensor…
TinySensor v1.4 plans
I have been working to upgrade the TinySensor v1.3 to a new version these days, that addresses the issues I had identified so far. I am keeping it in through-hole components for easy soldering and also so that one can easily…
Using a LDR (light dependent resistor) and DHT11 temp/humidity sensors
I got my hands on a LDR yesterday and figured that it will make a nice addition to a greenhouse monitoring project that will pick up light intensity, air temperature and humidity plus soil moisture and send that information to…