[sdiy] My new dotcom module.. M114 Dual CV-GATE delay
Jean-Pierre Desrochers
jpdesroc at oricom.ca
Thu May 20 23:51:53 CEST 2021
Hi all,
After some 6 months of hard work and with the precious help
of Roman Sowa (member of this DIY forum) I finally went through
the final tests and am very happy to introduce my new born M114
which is a Dual 2msec to 10sec CV-GATE delay.
Whatever CV/GATE comes in will be stored and sent back
with a specific dialled delay.
All this design’s traffic is made around talking SPI devices which are:
- 1 x 64k x 8 SPI SRAM
- 2 x 16 bits SPI ADC
- 2 x 16 bits SPI DAC
Storing the incoming GATE pulses and restoring them delayed was easy task,
but the most tedious part was to actually store the 2 incoming
CV voltages in 16bits chunks without losing any precision.
Well Roman Sowa came with a nice design of 2 SIP modules
that did the ADC and DAC conversion within +/1 LSB precision.
You can see some pictures below..
And.. as usual this is an open source project so all the needed files are available HERE <http://www.arcenson.com/projects/Modular/M114_CV-GATE_DELAY/> .
Enjoy !
Jean-Pierre
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