Working checkpoint1
About the Working checkpoint1 PCB
Working checkpoint1 is an open source PCB design by blthree, published on GitHub. It is a 2-layer board measuring 81.3 × 99.1 mm, with 103 components from 41 distinct parts.
Other key parts include the TL072, SSI2164, LM4040LP-5, TL074 and LM13700. By type, the board carries 44 resistors, 32 capacitors, 10 connectors, 7 ICs, 4 diodes and 2 transistors.
It belongs with the audio designs in this gallery.
Main components on the Working checkpoint1
Working checkpoint1 bill of materials (BOM)
103 components, 41 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TL072 | DIP-8_W7.62mm_Socket | U1, U3 |
| 1 | SSI2164 | DIP-16_W7.62mm_Socket | U2 |
| 1 | LM4040LP-5 | TO-92_Inline | U4 |
| 2 | TL074 | DIP-14_W7.62mm_Socket | U5, U6 |
| 1 | LM13700 | DIP-16_W7.62mm_Socket | U7 |
| 2 | 2N3906 | TO-92_Inline | Q1, Q2 |
| 1 | CV Mod | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J1 |
| 1 | Q_CV | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J2 |
| 1 | CV In | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J3 |
| 1 | Input | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J4 |
| 1 | VCA_CV | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J5 |
| 1 | Power | PinHeader_2x05_P2.54mm_Vertical | J6 |
| 1 | VCA Out | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J7 |
| 1 | LP4 Out | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J8 |
| 1 | LP2 Out | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J9 |
| 1 | BP2 Out | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J10 |
| 1 | 10Kb_res | Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV1 |
| 1 | 10Kb_FM | Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV2 |
| 1 | 10kb_fq | Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV3 |
| 1 | 5K trim | Potentiometer_Bourns_3296X_Horizontal | RV4 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 2 | 1N5819 | D_DO-41_SOD81_P10.16mm_Horizontal | D3, D4 |
| 12 | 100n | C_Disc_D5.1mm_W3.2mm_P5.00mm | C1, C3, C5, C6, C9, C10, C13, C14 +4 |
| 7 | 560p | C_Disc_D5.1mm_W3.2mm_P5.00mm | C2, C4, C7, C12, C16, C24, C28 |
| 1 | 220n | C_Disc_D5.1mm_W3.2mm_P5.00mm | C8 |
| 5 | 220p | C_Disc_D5.1mm_W3.2mm_P5.00mm | C11, C21, C23, C25, C29 |
| 1 | 4.7u | CP_Radial_D5.0mm_P2.00mm | C15 |
| 4 | 47p | C_Disc_D5.1mm_W3.2mm_P5.00mm | C22, C26, C27, C30 |
| 2 | 47u | CP_Radial_D5.0mm_P2.00mm | C31, C32 |
| 10 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1, R2, R5, R6, R10, R17, R25, R34 +2 |
| 2 | 22K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R3, R27 |
| 1 | 62K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R4 |
| 3 | 47K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R7, R8, R16 |
| 2 | 15K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R9, R13 |
| 1 | 6.8K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R11 |
| 4 | 510R | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R12, R21, R30, R39 |
| 1 | 27K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R14 |
| 7 | 33K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R15, R18, R26, R29, R33, R38, R42 |
| 8 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R19, R20, R22, R23, R28, R36, R37, R44 |
| 1 | 300K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R24 |
| 4 | 39K | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R31, R32, R40, R41 |
Working checkpoint1 design files
The KiCad project lives in the blthree/synth_schematics repository on GitHub; these links point at the commit this page was built from.
Working checkpoint1: common questions
How big is the Working checkpoint1 PCB?
The Working checkpoint1 measures 81.3 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Working checkpoint1?
103 components, from 41 distinct parts. The full bill of materials is listed on this page.
Where can I download the Working checkpoint1 design files?
From the blthree/synth_schematics repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Working checkpoint1 design in my own project?
The repository has no license, so all rights stay with blthree. Use it as a reference, and ask the author before reusing the design.
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