
Type d
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards

Eurorack attenuator, inverter, buffer
Attenuverter is an open-source printed circuit board by markmachine, from the markmachine/attenuverter repository on GitHub. It is a 2-layer board of 47.5 × 105 mm with 14 parts on 14 nets, routed with 136 tracks and 4 vias.
Its parts include 6 resistors, 4 connectors and 1 IC.
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| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 2 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5, R6 |
| 1 | 100K | Potentiometer_SMD:Potentiometer_Vishay_TS53YJ_Vertical | RV2 |
| 1 | 10K | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1 |
| 1 | HEADER_8x2 | Connector_PinSocket_2.54mm:PinSocket_2x08_P2.54mm_Vertical | J4 |
| 1 | Input | Connector_Audio_2:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J1 |
| 1 | Inverted Out | Connector_Audio_2:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J3 |
| 1 | Output | Connector_Audio_2:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J2 |
| 1 | TL074 | Package_DIP:DIP-16_W7.62mm_Socket | U1 |
The 13 most common of 14 parts.
It measures 47.5 × 105 mm and has 2 copper layers, 1.6 mm thick.
14 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the markmachine/attenuverter repository on GitHub, at the commit this page was made from: the board is attenuverter.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask markmachine before reusing the design.

google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards


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