DIY SP-12/Drumulator Instructions

 

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Now you can build the SP-12/Drumulator yourself.

Get one of the DIY basic kits and follow the instructions.

DIY Basic Kits

The instructions are the same for the Rx606, Rx808 and the Rx909 modules.

Only the panel and the chip are different.

Kit

BOM for the build

D1-D25 1N4148
R1-R7 22Kohm
R8-R9 1Kohm
R10 100ohm
C1-C2 10uF
C3 100nF/0.1uF
T1 BC-337
IC1 dsp-D8
IC2 78L05
CN1-CN16 Thonkiconn jacks PJ301M-12
POT1-POT6 Alpha 9mm 100Kohm Lin

 

Schematics

 

SP12drumulatorSchematic

PCB Layout

PCB_Layout

Building steps

1. Get the PCB out

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2. Solder the D1 to D25 diodes. Mind the polarity.

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3. Solder the R1 to R7 resistors

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4. Solder the R8, R9, R10, C1 to C3 capacitors. Mind the polarity of the black capacitors.

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5. Solder IC2 and T1 transistor.

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6. Solder the IDC power connector.

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7. Flip the board over and solder the 16 Thonkiconn jacks

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8. Solder the 6 Alpha potentiometers

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9. Finaly solder the IC1 drum chip

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10. Mount the panel

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11. Mount the Davies knobs

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12. Mount it into your rack and drum away.

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