From f5e1d849812b9043da895499610a9b353159c63f Mon Sep 17 00:00:00 2001 From: Frederik Walk Date: Sun, 24 Nov 2024 16:49:13 +0100 Subject: [PATCH] Add hint for sensitivity tuning in DonConIO README --- pcb/DonConIO/README.md | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/pcb/DonConIO/README.md b/pcb/DonConIO/README.md index dfac160..73be975 100644 --- a/pcb/DonConIO/README.md +++ b/pcb/DonConIO/README.md @@ -10,9 +10,10 @@ The arcade drum uses *Sensatec GSS-4SD* piezo impact sensors. While those are on You can also try your luck with any generic piezo, in this case you might have to tune the filters and amplification factor. -## Note +## Notes -This board does not use the internal ADCs of the RP2040 since those are pretty noisy and have a static offset of around +25mV. You can however still skip the external ADC and level-shifter and connect the signals directly to ADC pins of the XIAO RP2040 if you want to save some cost. +- If the sensitivity for a pad feels to low you can try to increase the feedback resistor (R3,R13,R21,R30) of the affected pad for more amplification. +- This board does not use the internal ADCs of the RP2040 since those are pretty noisy and have a static offset of around +25mV. You can however still skip the external ADC and level-shifter and connect the signals directly to ADC pins of the XIAO RP2040 if you want to save some cost. ## Bill of Materials