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by jaynvt
Sat Mar 15, 2014 10:27 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi Dimensions and new Eagle Template
Replies: 2
Views: 589

Re: Pi Dimensions and new Eagle Template

Good deal.. I have been 'meaning' to do that myself..

..jay
by jaynvt
Sun Sep 08, 2013 11:45 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Interrupt handling
Replies: 20
Views: 90478

Re: Interrupt handling

I used this code .. https://developer.ridgerun.com/wiki/ind ... int-test.c as an example to service gpio interrupts from a MCP23017 - i2c 16 input/output port expander..
..jay
by jaynvt
Tue Jul 30, 2013 12:57 pm
Forum: Advanced users
Topic: interrupt handling on the pi.
Replies: 6
Views: 4476

Re: interrupt handling on the pi.

Try https://developer.ridgerun.com/wiki/ind ... int-test.c .. sample and more at that website..

Cheers..

jay
by jaynvt
Sun Jan 20, 2013 8:07 pm
Forum: Automation, sensing and robotics
Topic: Dakota VHF MURS Driveway Motion Detector
Replies: 7
Views: 2226

Re: Dakota VHF MURS Driveway Motion Detector

Looking at the (dakota Alert) website, the Two-Way MURS base station (M538-BS) has a single normally open relay that could be used to connect to your RPi. .. just loop ground from the RPi on one side of the relay and the other side back to a RPi I/O. I used i2c so that I could attach more than one r...
by jaynvt
Sun Jan 20, 2013 12:28 pm
Forum: Automation, sensing and robotics
Topic: Dakota VHF MURS Driveway Motion Detector
Replies: 7
Views: 2226

Re: Dakota VHF MURS Driveway Motion Detector

I have 6 Dakota 3000's set up on the drive and in the woods.. some as far as far as 100m. The receiver(s) have 4 relays, one for each channel. I wired the relays to provide a ground to a MCP23017 i2c I/O expander on the RPi. Interrupt driven C code determines which was triggered, plays a unique tune...

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