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Topics - shabbee

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Odytron / glitchy response when sending MODULATION messages
« on: March 20, 2017, 05:07:24 PM »
Hi Paul,

I wonder if you have noticed when sending MOD messages over MIDI to ODYTRON that the response is rather glitchy as the MOD level increases? The behaviour is the same as increasing the LFO MOD depth using the value slider suggesting it's not a MIDI issue. In addition, sending a lot of MOD data can cause the value LED to light up and remain lit but this is quite intermittent.

I have uploaded the new firmware but has made no difference.

Thanks

Ian

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miniAtmegatron / Incompatible Uno ??
« on: May 14, 2016, 05:42:13 PM »
I have a Uno clone with an odd symptom.  When I adjust the filter most of them result in the sound breaking up and distorting really badly to the point that audio becomes silent. With another board (clone that uses a surface mount processor) it all sounds fine. I have verified the A/Ds are working on all ports so not sure why this is. My reason for posting is to make people aware. If I solve it with a new processor I will let you know. If anyone else has seen this and fixed it pls let me know

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miniAtmegatron / multiplex signal to replace S6
« on: March 08, 2016, 11:19:47 PM »
I'm trying to edit the code so that I can have 12 pots instead of the 6 with the little slide switch to change between functions. The hardware is no problem but as I'm just learning Arduino I'm struggling with the software.

I've tried to add the blink sketch lines to the miniatmegatron.ino so that D1 is sending out a clock pulse to control the multiplexing hardware. As you probably guessed this doesn't work as I get no signal when I scope D1. I'm convinced D1 is possibly defined elsewhere in the miniatmegatron code thus cancelling my setup and loop function, but I have no clue. I've also noted that the slower the clock frequency this interrupts the running of the miniatmegatron, my conclusion is that my approach is very lame and crude.

If I upload the blink example sketch alone, I can see the clock function working ok.

I need some pointers as my only option is to build a clock generator but I'm hopeful to the skilled programmer this would be an easy  piece of code to write. I'm also mindful that I may need some additional debounce for when then pots are read but one step at a time!

Thanks for reading and any help

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