CV & Gate Exp.154 Build Guide
Assembly Instructions
The CV & Gate Expander 154 module has no particular build requirements not already covered in the ‘General Build Info' page except:
The LED switch will sit better on the PCB if the small spigot on the rectangular standoff is snipped off. Make sure the switch is soldered onto the PCB the correct way around. The green marking on the side of the switch body is the cathode.
The back panel has a small rebate around the LED switch hole for the switch body to sit in.
Calibration
This module requires no calibration or tuning.
PCB Parts List
| Part No. | Quantity | Value | Name | RefDes |
| 7212-768 | 7 | 100n | 100n MLCC Capacitor | C1, C3, C5, C6, C9, C10, C12 |
| 7213-110 | 2 | 100u | 100uF 25V Electrolytic | C2, C7 |
| 7212-770 | 2 | 470n | 470n MLCC Capacitor | C4, C8 |
| 7213-208 | 1 | 10u 25V | 10u Tantalum 2.5mm | C11 |
| 7212-486 | 3 | 1N914 | D1, D2, D4 | |
| 7213-924 | 1 | LED - Green | D3 | |
| 7212-301 | 1 | Eurorack | Eurorack Power | J1 |
| 1208-015 | 1 | Flex Strip 15way | J2 | |
| Pot 1M Lin PCB Angle* | P1, P2 | |||
| 7163-099 | 7 | 100k | 100k 0.25W 1% Metal Film Resistor | R1, R4, R6, R8, R11, R14, R27 |
| 7163-051 | 8 | 1k | 1k 0.25W 1% Metal Film Resistor | R2, R5, R7, R9, R10, R12, R13, R19 |
| 7163-027 | 2 | 100R | 100R 0.25W 1% Metal Film Resistor | R3, R17 |
| 7163-082 | 3 | 20k | 20k 0.25W 1% Metal Film Resistor | R15, R18, R25 |
| 7163-091 | 1 | 47k | 47k 0.25W 1% Metal Film Resistor | R16 |
| 7163-075 | 2 | 10k | 10k 0.25W 1% Metal Film Resistor | R20, R26 |
| 7163-122 | 1 | 1M | 1M 0.25W 1% Metal Film Resistor | R21 |
| 7163-089 | 1 | 39k | 39k 0.25W 1% Metal Film Resistor | R22 |
| 7163-062 | 2 | 3k | 3k 0.25W 1% Metal Film Resistor | R23, R24 |
| 7212-250 | 1 | SPDT | S1 | |
| 7212-263 | 1 | Green LED PB | S2 | |
| 7212-542 | 1 | TL072 | U1 | |
| 2230-011 | 1 | 5V | 78L05 | U2 |
| 7212-544 | 1 | TL074 | U3 | |
| 7212-521 | 1 | 40106B | U4 |
*See below for MOTM or MU Potentiometers
Module Parts List
| Description | Reference | MOTM Qty | MU Qty |
| Pot Sticky Pads | 7210-188 | 2 | 2 |
| M3 x 8mm Stainless Panel Screws | 7212-774 | 4 | 4 |
| 8-Pin IC Socket | 7212-331 | 1 | 1 |
| 14-Pin IC Socket | 7212-332 | 2 | 2 |
| Power Lead | 7216-164 | 1 | |
| Toggle Switch Dress Nut | 7210-196 | 1 | 1 |
| M²Synth MU / MOTM Voltage Regulator / Interface | 7216-170 | 1 | |
| MOTM Front Panel | 7216-554 | 1 | |
| MOTM Back Panel | 7216-854 | 1 | |
| MU Front and Back Panel | 7219-554 | 1 | |
| Main PCB | 7216-054 | 1 | 1 |
| Jack Socket PCB | 7215-725 | 1 | 1 |
| Jack Sockets | 7212-220 | 10 | 10 |
| B1M Pots Long Shaft | 7300-830 | 2 | |
| B1M Pots Short Shaft | 7300-831 | 2 | |
| KM20B Knobs | 7212-170 | 2 | |
| MU Knobs | 7212-169 | 2 | |
| Circuit Schematic | S-7216-054-b | 1 | 1 |
PCB Layout
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