While testing the serial functions I had issues as mentioned in the previous post where the AVR <-> FTDI seemed not to be working. Initially I thought it was a hardware problem due to a hidden solder bridge or such, further testing on the ASCII example sketch revealed that something was being sent, albeit garbage, … Continue reading #Rallylog Fusebits
New boot loaders for the WidgetBoards have been uploaded to both SVN and to the downloads area. The fuse settings have also been updated in the documentation. I’ve also integrated the Atmega328P version of the WidgetBoard into the Arduino development environment so please update your boards.txt with the one from SVN.
I’ve just committed my current progress on porting Contiki Operating System to the RFM12WidgetBoard to SVN. Serial working LED API implemented. Event timers now working. Added blinky example that demonstrates all of the above. Now compiling to 5166 bytes of flash and using 387 bytes of ram. Next step is SPI and RFM12B drivers!
For the next version of the widget, I’m planning to have an on board boost regulator. This design will allows the widget to run from just about any voltage source as low as 0.7v (so NiMh will be fine) and up to 5.5v, this boost regulator in conjunction with a standard LDO regulator will give … Continue reading Widget running on the smell of a single AA
The other day while playing around with the ADC on the widget I had some problems with noise causing the reading to bounce around, It needed some form filtering to remove the noise. Normally almost everyone seems to take a number of readings and then average the result, unfortunately this takes time. I came across … Continue reading Simple Low Pass Noise Filter
I want to deploy widgets around the home, both inside and out, so I needed to find something that would allow some protection from the environment to the electronics, cheaply and easily. On the weekend while doing some shopping I found the solution in the kitchen area of the local discount store, at $1.50 a … Continue reading Widget Sensor Housings
In my previous blog entry I described adding a solar cell to the widget and how I could measure the voltage produced by the Solar Cell, however I still need to monitor actual battery voltage easily, and preferably with not a lot of additional hardware. Problems reading ones own voltage. Measuring ones own voltage has … Continue reading Reading Widget Battery Voltage
One of the tasks I want to use the widget boards for is a Wireless Sensor Network around the house for measuring environmental values. The sensors that I want to live outdoors will need to be self sufficient in terms of power, so I wanted to see if I could charge the batteries via … Continue reading Solar Powered Widget
Version 1.0 of the boards is progressing to the point where I’ll be starting work on v1.1, integrating user feedback and any issues on the tracker, I’ve put a few up there so please check them out, comment or add your own. Issue Tracker. I’m extremely happy to say that everything has progressed really well, … Continue reading Progress
I had a chance to grab a few photos of the progress so far, also helps that most of my components that I had on order arrived today so the boards has been kitted out with all the headers. Now I can plug the prototype personality in, still waiting on my crystals, switches, and diodes. … Continue reading Strobit Wireless Widget Photos
Today I did some testing on the RF side of things, nothing scientific, just walking around the house seeing if it would dropout or report bad checksums, I’m happy to reports all is working as expected (using the 915Mhz RFM12B module) The tests are done by using the RFM12B Example sketch found in the JeeLab … Continue reading Preliminary RF Tests
As one does while in bed at 3am and unable to sleep, I was thinking of the Strobit Triggr (which is probably why I couldn’t get to sleep in the first place) an idea presented itself for Arduino type shields (in particular Strobit Triggr personality boards) where they could be given some real personality. Currently … Continue reading Arduino Shields with Real Personality
I know I'm a bit slack in updates on the blog. If you haven't noticed I now have a twitter account http://www.twitter.com/madeinoz so you can follow what I'm doing when it's not getting updated here. However since the blog is way over due for an update here is what's been happening in a nutshell. Strobit … Continue reading Follow me on Twitter / Strobit Update
For those interested I found an RFM12 library for the Arduino http://jeelab.equi4.com/2009/02/10/rfm12b-library-for-arduino/
I've been playing around with the Arduino Diecimila and the ATMEGA168 over the last couple of weeks to better familiarise myself with the AVR ATMega168 MCU, I've been using PICs on and off the last few years, but the decision was made to use the ATMEGA as the MCU of choice for the Strobit Triggr … Continue reading Come join the Darkside Skywalker…..The Switch from PIC to AVR