a pocket sized groovebox.
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 |