EuroClack Formant LFO panel
clacktronics·EuroClack_Formant_LFO·EuroClack_Formant_LFO_panel/EuroClack_Formant_LFO_panel.kicad_pcb
About the EuroClack Formant LFO panel PCB
EuroClack Formant LFO panel is an open source PCB design by clacktronics, published on GitHub. It is a 2-layer board measuring 70.8 × 128.5 mm, with 101 components from 24 distinct parts.
Other key parts include the LM741 and LM324. By type, the board carries 51 resistors, 22 connectors, 11 capacitors, 8 diodes, 6 ICs and 3 transformers.
From the project
A copy of the Elektor Formant LFO modified for Eurorack
A copy of the Elektor Formant LFO modified for Eurorack
STILL WIP This text will be gone when it is tested and working

Main components on the EuroClack Formant LFO panel
EuroClack Formant LFO panel bill of materials (BOM)
101 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | LM741 | SOIC-8_3.9x4.9mm_P1.27mm | IC101, IC201, IC303 |
| 3 | LM324 | SOIC-14_3.9x8.7mm_P1.27mm | IC102, IC202, IC304 |
| 3 | RISING_RAMP | Jack_3.5mm_QingPu_WQP-PJ366ST_Vertical | J001, J4, J7 |
| 2 | SQUARE | Jack_3.5mm_QingPu_WQP-PJ366ST_Vertical | J002, J5 |
| 3 | TRIANGLE | Jack_3.5mm_QingPu_WQP-PJ366ST_Vertical | J003, J6, J9 |
| 1 | FALLING_RAMP | Jack_3.5mm_QingPu_WQP-PJ366ST_Vertical | J8 |
| 1 | Conn_02x05_Counter_Clockwise | IDC-Header_2x05_P2.54mm_Vertical | J10 |
| 12 | 10kΩ | P101, P102, P103, P104, P201, P202, P203, P204 +4 | |
| 3 | BC108 | T101, T201, T302 | |
| 2 | D_Schottky | D1, D2 | |
| 3 | 1N4148 | D101, D202, D303 | |
| 3 | LED | LED_D5.0mm | D102, D201, D304 |
| 9 | 1μF | C_0805_2012Metric | C2, C3, C4, C5, C7, C8, C101, C201 +1 |
| 2 | C_Polarized | C10, C11 | |
| 6 | 68kΩ | R_0603_1608Metric | R101, R102, R201, R202, R319, R320 |
| 15 | 100kΩ | R_0603_1608Metric | R103, R104, R106, R108, R109, R203, R204, R206 +7 |
| 3 | 47kΩ | R_0603_1608Metric | R105, R205, R323 |
| 9 | 1kΩ | R_0603_1608Metric | R107, R112, R113, R207, R212, R213, R328, R329 +1 |
| 3 | 3k9Ω | R_0603_1608Metric | R110, R210, R332 |
| 6 | 470Ω | R_0603_1608Metric | R111, R115, R211, R215, R333, R335 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 22kΩ | R_0603_1608Metric | R114, R214, R318 |
| 3 | 47Ω | R_0603_1608Metric | R116, R216, R317 |
| 2 | 10kΩ | R_0603_1608Metric | R325, R327 |
| 1 | 4k7Ω | R_0603_1608Metric | R326 |
EuroClack Formant LFO panel design files
The KiCad project lives in the clacktronics/EuroClack_Formant_LFO repository on GitHub; these links point at the commit this page was built from.
EuroClack Formant LFO panel: common questions
How big is the EuroClack Formant LFO panel PCB?
The EuroClack Formant LFO panel measures 70.8 × 128.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the EuroClack Formant LFO panel?
101 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the EuroClack Formant LFO panel design files?
From the clacktronics/EuroClack_Formant_LFO repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the EuroClack Formant LFO panel design in my own project?
The repository has no license, so all rights stay with clacktronics. Use it as a reference, and ask the author before reusing the design.