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Arduino
From: ANT_THOMAS
27 Jan 2015 12:23
To: Chris (CHRISSS)
251 of 542
40898.251
In reply to
40898.247
Thanks. I don't really care about having too many degrees of PWM. 0-255 is fine by me. Realistically 0-9 would do the job for the set brightnesses but would look crap for fading.
From: Chris (CHRISSS)
27 Jan 2015 13:44
To: ANT_THOMAS
252 of 542
40898.252
In reply to
40898.251
No problem. I was surprised how high the frequency had to go to not notice any flicker at all.
I waved my little strip around (YJ) and took a picture of it.
From: Chris (CHRISSS)
27 Jan 2015 18:47
To: ALL
253 of 542
40898.253
I've just installed the Android Arduino IDE. Maybe not a good idea, I'll never get anything done if I can work on projects with my phone. Uploaded the blink sketch to my Uno and it worked perfectly.
From: ANT_THOMAS
27 Jan 2015 19:43
To: ALL
254 of 542
40898.254
Shift registers and power supply have arrived so I'll be figuring them out tonight.
From: koswix
27 Jan 2015 21:42
To: ALL
255 of 542
40898.255
Floppy Organ now makes recognisable notes!
Learnt how to use interrupts tonight. Quite pleased with the progress, even though there's a lot still to do.
Floppy Organ stage 3:
http://youtu.be/obYuROTBXu8
From: koswix
27 Jan 2015 21:46
To: ANT_THOMAS
256 of 542
40898.256
In reply to
40898.254
Saw some PCBs that a guy had made today by seeed, they looked pretty nice.
http://www.seeedstudio.com/blog/2011/05/04/fusion-pcb-service-upgraded-with-even-lower-pricing/
From: Chris (CHRISSS)
27 Jan 2015 22:27
To: ANT_THOMAS
257 of 542
40898.257
In reply to
40898.254
How do PWM outputs work with a shift register? Anything special needed for that?
From: ANT_THOMAS
27 Jan 2015 22:27
To: koswix
258 of 542
40898.258
In reply to
40898.256
Whilst you have to order a minimum of 5 them prices are actually fairly reasonable.
From: ANT_THOMAS
27 Jan 2015 22:32
To: Chris (CHRISSS)
259 of 542
40898.259
In reply to
40898.257
I'm using the ShiftPWM library and they seem to work really nicely.
Any flickering has totally gone now I'm using the shift registers. Still figuring out how to use 2 daisy chained together properly.
I was easily able to convert my existing sketch to make use of the shift registers.
rather than:
analogWrite(ledPin1,255);
it is just:
ShiftPWM.SetOne(1, 255);
with the 1 being pin 1 on the shift register. Then you just cycle/loop like any other PWM loop example.
From: koswix
27 Jan 2015 22:32
To: ANT_THOMAS
260 of 542
40898.260
In reply to
40898.258
Think he said he paid £10 for ten boards. Pretty small boards, but still.