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by Agent 57
Tue Jan 28, 2014 1:02 pm
Forum: General discussion
Topic: MAX7219 and 7 segments 4-digit Display
Replies: 29
Views: 19256

Re: MAX7219 and 7 segments 4-digit Display

techpaul wrote:[Well I did say 'untested', yes Init7219 should have been moved, the rest is more personal preferences
Er, ok. Apologies if I offended you.
by Agent 57
Tue Jan 28, 2014 10:16 am
Forum: General discussion
Topic: MAX7219 and 7 segments 4-digit Display
Replies: 29
Views: 19256

Re: MAX7219 and 7 segments 4-digit Display

@neurom4nc3r Ok, so we know a single LED works. Next thing I'd do is try to control that same single LED via the max7219. Ignore the seven segment display for now. On the max7219 : max7219 pin 1(data) --> pi gpio 0 max7219 pin 2 --> LED negative max7219 pin 4 / 9 --> to pi gnd max7219 pin 12(load) -...
by Agent 57
Sun Jan 26, 2014 6:55 pm
Forum: General discussion
Topic: MAX7219 and 7 segments 4-digit Display
Replies: 29
Views: 19256

Re: MAX7219 and 7 segments 4-digit Display

Hello, I'm the guy behind that code you found. I can report its working fine here. My Raspberry Pi has been sitting on my desk displaying the time (as well as doing other things) for about a year now. To turn test mode on using that code : MAX7219Send(15,1); My clock just lit up! It's been a year si...
by Agent 57
Sat Feb 02, 2013 9:16 am
Forum: Automation, sensing and robotics
Topic: DHT11 and RasPi GPIO pin confusion ?
Replies: 17
Views: 12287

Re: DHT11 and RasPi GPIO pin confusion ?

Slightly off topic but I think that rpiblog site you linked to is extremely suspect. I know for a fact they lifted a post from my blog, regarding driving the max7219, directly. He even included my hand drawn diagram and the photo I took. It's flattering in a way but also a little annoying as he refu...
by Agent 57
Thu Jan 10, 2013 5:29 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Drive MAX7219 with I2C with shell script
Replies: 31
Views: 10311

Re: Drive MAX7219 with I2C with shell script

Just spent the day trying to get this working (it's half term, so I am not at school!), but I had no success. :?: I was in the exact same position as you, desperately trying to get the Raspberry Pi to talk to a max7219 through its SPI. But no luck here. Did you ever figure this out? I gave up with ...

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