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STD MegaDriveSynth
License: MIT
- 3
Description
Based on [Look Mum No Computer](https://www.lookmumnocomputer.com)'s [sega-megadrive-synth](https://www.lookmumnocomputer.com/sega-megadrive-synth) based on [juha](https://github.com/juhakivekas)'s [midisplitter](https://github.com/juhakivekas/midisplitter_2000) with [Harry Axten](https://hkadesign.org.uk/)'s poly code fix and [Notes and Volts](https://www.notesandvolts.com/) [multiplexers guide](https://youtu.be/NmxoBdEJG28).
Also with help on the [thread](https://lookmumnocomputer.discourse.group/t/sega-mega-drive-synth/31/31)
[Arduino code](https://github.com/richy486/sega-megadrive-synth)
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | Midi Voice Switch | 2 | 1P6T ROTARY SWITCH (JAMES) | 1 |
| 2 | MIDI_IN | MIDI1 | PA_DIN_5_FEMALE | 1 |
| 3 | MIDI_OUT/THRU | MIDI2 | PA_DIN_5_FEMALE | 1 |
| 4 | Toggle Switch | S1 | SWITCHE-DPDT | 1 |
| 5 | Algorithm Switch | SW1 | MINI ROTARY SWITCH (1P8T) | 1 |
| 6 | POT | RV1,RV2 | ALPS_POT_KIT | 2 |
| 7 | LED-TH-3mm_R | LED2 | LED-TH_BD3.0_RED | 1 |
| 8 | Socket | J1 | STX2550-3M | 1 |
| 9 | Pro Micro 3.3V | P2,P1 | PRO MICRO 3.3V | 2 |
| 10 | 10k | R3,R6,R8,R9,R10,R11,R12,R13,R14,R15,R16,R17,R18,R19,R21,R22 | R_AXIAL-0.4 | 16 |
| 11 | 220r | R1,R5 | R_AXIAL-0.4 | 2 |
| 12 | 4k7 | R2 | R_AXIAL-0.4 | 1 |
| 13 | 6N136 Optocoupler | U5 | DIP-8_L10.1-W6.3-P2.54-LS7.6-BL | 1 |
| 14 | 1N4148 | D1 | DO-35_BD2.0-L4.0-P8.00-D0.5-FD | 1 |
| 15 | ANALOG MULTIPLEXER | M1,M2,M3 | 4067-PCB | 3 |
| 16 | DIGITAL MULTIPLEXER | M4 | 4067-PCB | 1 |
| 17 | 2 PIN VCC/GND PAD | U1 | 2 PIN VCC/GND PAD | 1 |
| 18 | Push Button | U8 | PUSH_BUTTON_W4.5_L6.5 | 1 |
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