Clockdiv
About the Clockdiv PCB
Clockdiv is an open source PCB design by versusentropy, published on GitHub under the Custom license license. It is a 2-layer board measuring 29.7 × 93.2 mm, with 110 components from 24 distinct parts.
Other key parts include the 4024 and L78L06_SOT89. By type, the board carries 52 resistors, 19 connectors, 19 diodes, 11 transistors, 7 capacitors and 2 ICs.
It belongs with the audio designs in this gallery.
From the project
eurorack clockdivider module
6hp +/-12V 20mA/- 1 PCB 2 layer 73 parts total 14 SMT, 4 THT +5V gate outputs clock input TN pin header on pcb reset input 2nd pin header on pcb
Schematic and layout with KiCad 5. Panel with Inkscape + shenzen2svg → Kicad
Ordered mine at JLCPCB. Gerbers include marking for order number. BOM with part numbers for their assembly service.
Be carful with the transisors' pin numbers, because the 2N3904 schematic symbol doesn't match the MMBT3904 part (, which has its own schematic symbol).
Main components on the Clockdiv
Clockdiv bill of materials (BOM)
110 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4024 | SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | L78L06_SOT89 | SOT-89-3 | U2 |
| 11 | 2N3904 | SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +3 |
| 1 | CLK | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHolesSMALL | J1 |
| 1 | RESET | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHolesSMALL | J2 |
| 1 | RESET GND | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 7 | OUT | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHolesSMALL | J4, J5, J6, J7, J8, J9, J12 |
| 1 | CLKTN GND | PinHeader_1x02_P2.54mm_Vertical | J10 |
| 1 | +12V GND -12V | PinHeader_2x05_P2.54mm_Vertical | J11 |
| 7 | GND | PinHeader_1x02_P2.54mm_Vertical | J13, J14, J15, J16, J17, J18, J19 |
| 12 | 1N4148 | D_SOD-123 | D1, D2, D3, D4, D5, D13, D14, D15 +4 |
| 7 | LED | LED_D5.0mm | D6, D7, D8, D9, D10, D11, D12 |
| 1 | 1u | C_0402_1005Metric | C1 |
| 2 | 100n | C_0603_1608Metric | C2, C7 |
| 1 | 330n | C_0402_1005Metric | C3 |
| 1 | 22u | C_0805_2012Metric | C4 |
| 1 | 10u | CP_EIA-6032-28_Kemet-C | C5 |
| 1 | 22u | CP_EIA-3528-21_Kemet-B | C6 |
| 8 | 100k | R_0402_1005Metric | R1, R10, R13, R16, R19, R22, R25, R28 |
| 5 | 10k | R_0402_1005Metric | R2, R3, R8, R9, R11 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 47k | R_0402_1005Metric | R4, R5, R6, R7 |
| 14 | 1k | R_0402_1005Metric | R12, R14, R17, R20, R23, R26, R29, R46 +6 |
| 7 | 470 | R_0603_1608Metric | R15, R18, R21, R24, R27, R30, R31 |
| 14 | 1M | R_0402_1005Metric | R32, R33, R34, R35, R36, R37, R38, R39 +6 |
Clockdiv design files
The KiCad project lives in the versusentropy/clockdiv repository on GitHub; these links point at the commit this page was built from.
- Layoutkicad/clockdiv.kicad_pcb
Clockdiv: common questions
How big is the Clockdiv PCB?
The Clockdiv measures 29.7 × 93.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Clockdiv?
110 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the Clockdiv design files?
From the versusentropy/clockdiv repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Clockdiv design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
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