Switches
Switches is an open source PCB design by Len42: a 2-layer, 40.1 × 108.2 mm board with 98 components (21 distinct parts). It is built around the TL074, SN74HCS74. Filed under audio.
Eurorack synthesizer module designs
This module requires a 16-pin Eurorack power cable that supplies +5 V power in addition to +12 V and -12 V.
PCB layouts are provided in KiCad and gerber formats. A PCB layout for a drilled front panel (with no labels) is also included.
The PCBs that I used can be ordered from OSH Park. The designs are here: - Main board - Controls board - Front panel
Please note that I am a hobbyist, not a trained electronics engineer. No guarantees!
Built around
Parts list
98 components, 21 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TL074 Texas Instruments | DIP-14_W7.62mm | U1, U3 |
| 2 | SN74HCS74 Texas Instruments | SOIC-14_3.9x8.7mm_P1.27mm | U2, U4 |
| 4 | 2N3906 ON Semiconductor / Fairchild | TO-92_Inline_Wide | Q1, Q2, Q7, Q8 |
| 8 | J109 onsemi / Fairchild | TO-92_Inline_Wide | Q3, Q4, Q5, Q6, Q9, Q10, Q11, Q12 |
| 8 | WQP-PJ398 QingPu / Thonk | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical | J1, J2, J3, J4, J5, J6, J7, J8 |
| 1 | CONN_EURORACK_16 Conn_Eurorack_16 Wurth Elektronik | IDC-Header-Eurorack-16-TH | J9 |
| 1 | Conn_Front_Top | PinSocket_1x10_P2.54mm_Vertical | J10 |
| 1 | Conn_Front_Bottom | PinSocket_1x10_P2.54mm_Vertical | J11 |
| 1 | Conn_Back_Top | PinHeader_1x10_P2.54mm_Vertical | J12 |
| 1 | Conn_Back_Bottom | PinHeader_1x10_P2.54mm_Vertical | J13 |
| 4 | D6RLXXF1 D6RLxxF1 C&K | SW_Push_LED_C&K_D6R | SW1, SW2, SW3, SW4 |
| 14 | 100N TDK | C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C2, C3, C4, C5, C6, C7, C8 +6 |
| 3 | 10U Panasonic | CP_Radial_D5.0mm_P2.50mm | C9, C10, C17 |
| 4 | 1N FG18X7R1H102KNT06 | C_Disc_D5.0mm_W2.5mm_P2.50mm | C11, C12, C19, C20 |
| 24 | 10K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R11, R12, R13, R14 +16 |
| 4 | 1K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R6, R27, R28 |
| 4 | 330R YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R8, R29, R30 |
| 4 | 100K 100k YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R9, R10, R31, R32 |
| 4 | 240K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R15, R16, R37, R38 |
| 2 | 1K Vishay / Dale | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R21, R43 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1K Vishay / Dale | SB_Gen_1 | R22, R44 |
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