Tuesday, June 17th, 2008
RFM12 Tutorial - Part2
Part 2 - RFM12 Hardware Interface
In this next part of the RFM12 tutorials I’ll be covering the hardware interface, signal descriptions and how you go about hooking it up to the MCU of your choice.
13 Comments » - Posted in Embedded, RF, Tutorials, rfm12 by Stephen Eaton
Monday, May 5th, 2008
StrobIt Board
Ok I have finally had a little bit of time to work on things (will be short lived as I’ve just bought a house and moving in the next couple of weeks Aghh!!).
Things are getting very close to reality after many design changes, the very nearly final Strobit Trigger base board, aka a modified Ardiuno [...]
No Comments » - Posted in Eagle, EbayTrigger, Embedded, RF, rfm12, strobist by Stephen Eaton
Thursday, March 27th, 2008
RFM12 Forum
Due to the number of requests for help in getting a link operation with the RFM12 tranceiver, I’ve set up a dedicated topic on the forums. http://forums.everythingrobotics.com/index.php. Please post any cries for help there, that way no information is lost in the comments of my blog or my email inbox
No Comments » - Posted in RF, rfm12 by Stephen Eaton
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
Saturday, December 29th, 2007
Trigger Fires Up
Well I finished the two prototype boards tonight with some minor changes and a bit of troubleshooting, still lots to do though. I now have them triggering. Will be testing further over the next few days to get indication of range etc. So far it is only syncing at 1/100. I will be posting more details [...]
1 Comment » - Posted in EbayTrigger, Embedded, PIC, RF, rfm12, strobist by Stephen Eaton
Friday, December 28th, 2007
Murphys Law Strikes
What did I say in my last entry about murphys law and my RFM12 header boards? Guess what arrived in the post today lol…..
1 Comment » - Posted in Eagle, Embedded, rfm12 by Stephen Eaton
Thursday, December 27th, 2007
Strobit Triggr Prototype Finished
After a hectic and very hot Christmas (41DegC) I managed to get some development time and finished 2 prototype boards. My RFM12 header boards still have not arrived, caught up in the christmas mail I guess :( So I’ve had to resort to hand soldering some wires to the header in the meantime. (Murphys law suggests [...]
No Comments » - Posted in EbayTrigger, Embedded, PIC, RF, rfm12, strobist by Stephen Eaton
Friday, December 14th, 2007
Repartition Blues
Unfortunately development has ground to a halt for me.Â
Whilst repartitioning my laptop to give my system drive some more space (I REALLY dislike the default DELL partitioning of 20GB for c: and the rest for d:), I lost my development drive (and the rest of my data drive as well) with all my recent work [...]
No Comments » - Posted in Embedded, RF, Uncategorized, 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
Tuesday, November 20th, 2007
RFM12 Prototype Board
The RFM12 module is a pain to prototype with due to the 2mm header (won’t fit into the breadboard), so I’ve whipped up a prototyping board that brings out the pins to a standard header. It’s been it sent off for fabrication today so I should have back in the next week or so.  I’m trying out www.batchpcb.com for [...]
