Imported from GitHub: jonbro/Audcalc · commit a62c606 · license MIT

Description

pocket sized groovebox

README

AudCalc

a pocket sized groovebox.

Note to folks stumbing across this repo.

I'm happy with this, but its not 100% feature complete on the firmware side. Its really neat though, and I think you'll like it.

v5 prototype

• RP2040
• 1/8in audio i/o
• onboard mic
• 104mm x 68mm x 14mm

The bom is contained within the Hardware kicad project, ready for assembly via jlcpcb. There are several additional items that must be sourced and handsoldered:

part	count	mfg part number	link	notes
battery connector	1	jst s2b-ph-sm4-tb	https://octopart.com/s2b-ph-sm4-tb%28lf%29%28sn%29-jst-248913	these are redibly available from aliexpress as well
midi / audio jacks	4	PJ-327C-4A	https://lcsc.com/product-detail/Audio-Connectors_Korean-Hroparts-Elec-PJ-327C-4A_C145813.html	I believe there is an equivalent CUI headphone jack. I'm using this cheaper version
pots	2	alps RK09K1130A5R	https://lcsc.com/product-detail/Variable-Resistors-Potentiometers_ALPSALPINE-RK09K1130A5R_C209779.html
oled screen (128x32)	1	ssd1306	https://www.aliexpress.com/item/4000842671330.html	I'm using the white / solderable version.
battery	1	lp-503562	https://www.adafruit.com/product/258	There are other cheaper sources for these. Confirm the correct polarity before using.
m2 4mm f-f standoff	4		https://www.aliexpress.com/item/1005002145042844.html
m2 6mm m-f standoff	4		https://www.aliexpress.com/item/1005002145042844.html
m2 3mm hex head bolt (black)	8		https://www.aliexpress.com/item/10000148429238.html