Backup1
About the Backup1 PCB
Backup1 is an open source PCB design by vk2gpu, published on GitHub. It is a 2-layer board measuring 102.9 × 92.7 mm, with 101 components from 36 distinct parts.
Other key parts include the L78L05, 74HC14, 74HCT595, BluePill_STM32F103C and YMF262. By type, the board carries 24 diodes, 23 resistors, 20 capacitors, 14 connectors, 11 switches and 9 ICs.
It belongs with the audio designs in this gallery.
From the project
OPL3 based 4-op drum synth module
Main components on the Backup1
Backup1 bill of materials (BOM)
101 components, 36 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L78L05 | SOT-89-3_Handsoldering | U1 |
| 1 | 74HC14 | SOIC-14_3.9x8.7mm_P1.27mm | U2 |
| 1 | 74HCT595 | SOIC-16W_5.3x10.2mm_P1.27mm | U3 |
| 1 | BluePill_STM32F103C | DIP-40_W15.24mm_Socket | U4 |
| 1 | YMF262 | SOIC-24W_7.5x15.4mm_P1.27mm | U5 |
| 2 | YAC512 | SOIC-16_4.55x10.3mm_P1.27mm | U6, U7 |
| 2 | TL074 | SOIC-14_3.9x8.7mm_P1.27mm | U8, U9 |
| 1 | Conn_02x05_Eurorack | PinHeader_2x05_P2.54mm_Vertical | J1 |
| 1 | Gate0 | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles_TS | J2 |
| 1 | Gate1 | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles_TS | J3 |
| 1 | Gate2 | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles_TS | J4 |
| 1 | Gate3 | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles_TS | J5 |
| 1 | Gate4 | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles_TS | J6 |
| 1 | Gate5 | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles_TS | J7 |
| 1 | Conn_01x04_Male | PinHeader_1x04_P2.54mm_Vertical | J8 |
| 1 | Conn_01x11_Female | PinSocket_1x11_P2.54mm_Vertical | J9 |
| 4 | AudioJack2_Ground | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles_TS | J10, J11, J12, J13 |
| 1 | Conn_01x08_Female | PinHeader_1x08_P2.54mm_Vertical | J14 |
| 6 | SW_Push | SW_SPST_EVQP0 | SW1, SW2, SW3, SW4, SW5, SW6 |
| 1 | Rotary_Freq | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW7 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Rotary_A | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW8 |
| 1 | Rotary_D | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW9 |
| 1 | Rotary_S | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW10 |
| 1 | Rotary_R | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW11 |
| 3 | 1N4004 | D_SOD-123F | D1, D2, D3 |
| 6 | LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4, D5, D6, D7, D8, D9 |
| 15 | 1N4148 | D_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D10, D11, D12, D13, D14, D15, D16, D17 +7 |
| 2 | 22uF | C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C1, C2 |
| 1 | 1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C3 |
| 9 | 100nF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C4, C5, C6, C7, C8, C17, C18, C19 +1 |
| 2 | 33pf | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C9, C10 |
| 2 | 10uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C11, C12 |
| 4 | 2700pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C13, C14, C15, C16 |
| 2 | 10 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 6 | 100k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3, R4, R5, R6, R7, R8 |
| 15 | 1k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R9, R10, R11, R12, R13, R14, R15, R16 +7 |
Backup1 design files
The KiCad project lives in the vk2gpu/4op_drum_synth repository on GitHub; these links point at the commit this page was built from.
Backup1: common questions
How big is the Backup1 PCB?
The Backup1 measures 102.9 × 92.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Backup1?
101 components, from 36 distinct parts. The full bill of materials is listed on this page.
Where can I download the Backup1 design files?
From the vk2gpu/4op_drum_synth repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Backup1 design in my own project?
The repository has no license, so all rights stay with vk2gpu. Use it as a reference, and ask the author before reusing the design.
More boards in 4op_drum_synth
Similar boards
KLOR
GEIGEIGEIST
160.2 × 118.3 mm79 parts2LGPL-3.01.2k
ButtonsLEDs
shanteacontrols
390 × 37 mm82 parts2LApache-2.0956
USB
52 × 12.6 mm6 parts2LApache-2.0956
Pots
390 × 93 mm75 parts2LApache-2.0956
PicoGUS Hand386
polpo
29.2 × 75.2 mm43 parts4LGPL-2.0800
Snark barker
schlae
231.1 × 106.7 mm193 parts2LNo license687