Bontempo - PT2399 Tap Tempo & Moduation  [documentation]

Original effect designs complete with schematics, layouts and instructions. Freely contributed by members and cannot be used for commercial purposes without consent of the respective owners of the copyright.
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Bononoob
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Post by Bononoob »

Hey!

I recently finished a PT2399 Tap Tempo project called Bontempo. It's based on a Attiny84A and a MCP41100 digital pot.

All details are on my website https://electric-canary.com/bontempo and Github https://github.com/ElectricCanary/Bontempo

It probably can be of use to most people using PT2399 fo delay. Adding presets is pretty cool and I spent a lot of time on intuitiveness.

Here's most features :
- 40 to 1200ms of delay
- 6 tempo divisions (fourth, dotted eighth, eighth, triplet, sixteenth, sextuplet)
- around 30ms of modulation
- 6 modulation waveforms (sine, square, triangle, ramp up, ramp down, random square)
- 2 user presets
- "Clean Mode", 600ms dalay limit
-"Tempo save" the tap tempo is recalled if you power down the circuit

It has been succefully used with most PT2399 circuits around (Deep Blue Delay, Faux Tape Echo...) and it doesn't add a lot of components.
Attachments
Bontempo_Application_Schematic.png
Populated Board_Cropped - Copie.jpg
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https://electric-canary.com

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dan.schumaker
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Post by dan.schumaker »

Looks awesome! I've seen this before and looking at adding it to a delay circuit. Just need to figure out how to burn the ATTINY. I've played with EEPROM's in the FV-1 and PIC's for relay bypass, but never Arduino stuff before

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Bononoob
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Post by Bononoob »

dan.schumaker wrote: 19 Feb 2021, 23:57 Looks awesome! I've seen this before and looking at adding it to a delay circuit. Just need to figure out how to burn the ATTINY. I've played with EEPROM's in the FV-1 and PIC's for relay bypass, but never Arduino stuff before
Thanks! AVR (not arduino in this case) is pretty strait foward. You just need a cheap programmer (usbasp) or an arduino. Then just burn the hex file with the correct fuses on AVRDUDESS.
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https://electric-canary.com

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dan.schumaker
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Post by dan.schumaker »

Bononoob wrote: 20 Feb 2021, 00:33
dan.schumaker wrote: 19 Feb 2021, 23:57 Looks awesome! I've seen this before and looking at adding it to a delay circuit. Just need to figure out how to burn the ATTINY. I've played with EEPROM's in the FV-1 and PIC's for relay bypass, but never Arduino stuff before
Thanks! AVR (not arduino in this case) is pretty strait foward. You just need a cheap programmer (usbasp) or an arduino. Then just burn the hex file with the correct fuses on AVRDUDESS.
That makes sense. It looks like I have a lot of learning to do, figuring out how to burn these :)

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rockerd82
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Post by rockerd82 »

Great project. I was about to start something similar, but I want to avoid the digital pot... no idea if I'll manage!

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Bononoob
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Post by Bononoob »

rockerd82 wrote: 27 Feb 2021, 14:33 Great project. I was about to start something similar, but I want to avoid the digital pot... no idea if I'll manage!
Thanks! Yeah Electro Smash did that with the time manipulator, and a Japanese guy with the Tapper. So it's definitely possible.
But I wanted to keep the parts count as low as possible so the MCP41100 was an easy way out.
Science is art. Art is science.
https://electric-canary.com

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