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Here is the design: Here is the code: //DRONE //three sine oscillators - very close - creates modulations in amplitude // PINK NOISE + FILTER //v6 - remove waveshaper - ADD BITCRUSHER //waveshape //add Bounce.h #include <Bounce.h> // GUItool: begin automatically generated code #include...

Hi luni - thanks for the link - I tried it but I am still experiencing issues. I think the best thing for me to do is make my project more simple to try to identify the issues. It seems that control knob 7 (connected to pin A6) is acting as a kind of 'master'. The other pots can make...

Hi rolf, thanks for that. I can order a MCP3204 to test I was hoping that using the teensy audio shield (4+ rev D / 3.2 + rev c) would be able to deliver usable output.

I tried using 5k pots and the tones are a lot more stable - thanks MarkT. There is still a little wobble, and some audible clicking - like a clock in the background. Is that likely a programme error or is can it be resolved by adding the 100uF capacitor? ANyone got any suggestions to try?

"Adding 100uF or more across the supply may tame this". Would this be an electrolytic capacitor between + / - ; the negative leg of the capacitor to ground and positive to 3.3v? The device should be powered from USB. Does this image seem right? Thanks for suggestions.

Many thanks for your feedback MarkT - I'll try changing pot values for a start and then try adding capacitors. I think making the traces wider is easy to do on eagle. Do you have a link to more information on averaging of analogue reads?

Hi I've been working on a little controller PCB with some extra pads for experimenting/hacking. https://hackaday.io/project/174682-dd-teensy https://github.com/bjc01/D-D_Teensy I was working with teensy 3.2 + audio shield (Rev B). I got it fabricated by ALLpcb. When I have it connected, each...

After searching around other forums I found I had to modify my port settings, and now things are talking to each other again.

I tried to follow the notes and volts tutorial https://www.notesandvolts.com/2018/05/teensy-synth-part-1.html I am unable to get anything to work. I tried updating to the latest version of arduino (1.8.13) could this be because I am connecting to macbookpro via USB C? I tried pushing the button...

I've just finished going through all the ten-turn pots I have available with the multimeter. Most of the ten-turn pots (x15) are 5k, these are the ones showing clear issues, from no variety (sticking at 5k) to sometimes jumping to unexpected values at the extremities (jumping to over 5k when...

Thanks for the advice - I have tested a number of pots from the batch I bought and found that there were a few with issues. There were a number which showed print monitor readings which were always fluctuating, yet they would settle when read with the multimeter.

I am making an audio device using teensy 3.2 I was hoping to use ten turn pots to control some of the parameters, example: https://www.amazon.com/JANSANE-Potentiometer-Wirewound-Multiturn-Adjustable/dp/B07D8KN6QW/ref=sr_1_3?keywords=5k+10+turn+potentiometer&qid=1581357245&sr=8-3 but when I...

// Advanced Microcontroller-based Audio Workshop // // http://www.pjrc.com/store/audio_tutorial_kit.html // https://hackaday.io/project/8292-microcontroller-audio-workshop-had-supercon-2015 // // Part 2-8: Oscillators #include <Bounce.h> Bounce button0 = Bounce(0, 15); Bounce button1 =...

I am trying to go through the video tutorial but I have become stuck. Part_2_08_Oscillators I get the following message, "'waveform1' was not declared in this scope" I am using a teensy 3.2 and audio shield rev B. I tried to follow each step of the tutorial, rewinding etc to ensure I hadn't...