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by Voltar
Sun Feb 08, 2015 10:50 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 and 30-Jan firmware
Replies: 38
Views: 31066

Re: DS18B20 and 30-Jan firmware

1st off, awesome opening post to this thread. LOL!

2nd, I had exactly the same issue as the OP. Added the dtoverlay=w1-gpio line to config.txt and all is well.

Thanks to all!
by Voltar
Sat Dec 13, 2014 2:37 pm
Forum: Advanced users
Topic: Constant Blink Rate (freq) on an IO pin?
Replies: 6
Views: 1349

Re: Constant Blink Rate (freq) on an IO pin?

Just to close this topic on my use of the PWM library....

A Raspberry PI CPU Usage Meter from a Car Tachometer. Build page:
http://www.whiskeytangohotel.com/2014/1 ... meter.html

Thanks, all, for the tip.
by Voltar
Thu Dec 11, 2014 1:03 am
Forum: Advanced users
Topic: Constant Blink Rate (freq) on an IO pin?
Replies: 6
Views: 1349

Re: Constant Blink Rate (freq) on an IO pin?

Joan:

Many thanks. Your PWM link satisfies my requirement!
by Voltar
Tue Dec 09, 2014 1:55 pm
Forum: Advanced users
Topic: Constant Blink Rate (freq) on an IO pin?
Replies: 6
Views: 1349

Re: Constant Blink Rate (freq) on an IO pin?

joan:

thanks. i saw/read a few of your posts before asking the question trying to get some direction. :D

you are correct that i do not need anything super accurate. can you linkslap me with the location to some documentation on the PWM command or library that you mentioned?

thanks again.
by Voltar
Mon Dec 08, 2014 11:38 pm
Forum: Advanced users
Topic: Constant Blink Rate (freq) on an IO pin?
Replies: 6
Views: 1349

Constant Blink Rate (freq) on an IO pin?

Say I want to blink an LED at 1 Hz if my PI is in a certain mode. 5Hz in a different mode, etc. I know using python how to do the basic 'hello world' ON -> SLEEP -> OFF -> SLEEP.... loop.... but that requires the IO pin to be 'touched' at regular and predictable intervals. But in my case the RasPI i...

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