Tuesday, January 8th, 2008
RFM12 Tutorial - Part1
During the development of the StrobIt Open Trigger Project I’ve been using the HopeRF RFM12B Tranceiver as the RF module. The learning curve was fairly steep so I’ve decided to create a series of How-To articles so that others can easily get the module up and running fairly quickly for their project of choice. [...]
10 Comments » - Posted in Embedded, PIC, RF, Tutorials, rfm12 by Stephen Eaton
Wednesday, December 5th, 2007
RFM12 FSK Library - Alpha Release
I’m pleased to announce the very ALPHA release of the RFM12 library for the wireless HopeRF RFM12 FSK tranceiver module that I’m using for the strobist open trigger project. It was developed under BOOSTC for the PIC embedded controller, but should be easily ported to any compiler.
Most of it is untested, hence the alpha release, but it’s a good [...]
No Comments » - Posted in C, EbayTrigger, Embedded, PIC, RF, Software, rfm12, strobist by Stephen Eaton
Monday, November 26th, 2007
PIC, SPI and the RFM12
I finally had some time this weekend so I started the hardware verification, mainly getting the PIC and the RFM talking together via SPI, of which I have had no previous experience.  The PIC is receiving it’s clock source from the RFM12 via the CLK pin so I dont need any external Xtals. The RFM12 default clock rate [...]
3 Comments » - Posted in C, EbayTrigger, Embedded, PIC, RF, strobist by Stephen Eaton
Friday, November 16th, 2007
More challenges but getting there
Trying to fit the functionality into the existing ebay trigger receiver housing seems to be a royal pain in the butt, especially trying to work in with the batteries, so after a few days of PCB redesigns and juggling compments around I have put that particular design on hold and moved forward with my original PIC16F873A [...]
No Comments » - Posted in EbayTrigger, Embedded, PIC, RF by Stephen Eaton
Thursday, November 8th, 2007
EBAY Trigger Receiver PCB
A couple of design changes, main one being I could not physically fit a single design into the existing housings that would encompass the Tx and RX, the RX housing is the problem as it’s a fairly small board so that means I’ve had to change the processor so that I can physically fit everything as [...]
