Euclid Control Board
About the Euclid Control Board
Euclid Control Board is an open source PCB design by m0xpd, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 78 × 108 mm, with 105 components from 28 distinct parts.
Other key parts include the TL084 and THONKICONN_JACK. By type, the board carries 55 resistors, 17 diodes, 12 ICs, 8 capacitors, 5 transistors and 2 jumpers.
From the project
EUCLID+ is a Clock Divider, Oscillator and Rhythm Sequencer for electronic music applications
This is actually a photo of the v1 Control Board. This earlier version had a different slightly footprint for C8, which is now a radial electrolytic. Also, some of the PCB tracks carrying power on the v2 version are thicker than on the V1 version, which is archived in the [v1 Control Board folder]
The populated (v1) Control Board is seen (from the top/component side) in the photo below. It is mounted to the Front Panel by the two (9mm Alpha) potentiometers and the ten ("Thonkiconn") sockets mounted on the bottom side.
Main components on the Euclid Control Board
Euclid Control Board bill of materials (BOM)
105 components, 28 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TL084 | DIP-14_W7.62mm_Socket_LongPads | U1, U2 |
| 10 | THONKICONN_JACK | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | U$1, U$2, U$3, U$4, U$5, U$6, U$7, U$8 +2 |
| 5 | BC546 | TO-92_HandSolder | Q1, Q2, Q3, Q4, Q5 |
| 2 | ~ | PinHeader_1x18_P2.54mm_Vertical | JP1, JP2 |
| 2 | SW_Push | SW_PUSH_6mm_H13mm | SW1, SW2 |
| 4 | B100k | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_CircularHoles | VR1, VR2, VR3, VR4 |
| 6 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D4, D5, D14, D15 |
| 11 | LED | LED_D3.0mm | D3, D6, D7, D8, D9, D10, D11, D12 +3 |
| 1 | 100n | C_Disc_D4.7mm_W2.5mm_P5.00mm | C1 |
| 2 | 10n | C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C7 |
| 4 | 100n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C3, C4, C5, C6 |
| 1 | 1u | CP_Radial_D5.0mm_P2.50mm | C8 |
| 15 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R7, R8, R10, R11, R12, R26, R27 +7 |
| 1 | 3M3 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 220k | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R3 |
| 2 | 270k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R19 |
| 9 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R13, R14, R20, R22, R24, R28, R29 +1 |
| 1 | 56k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R6 |
| 1 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R9 |
| 3 | 15k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R15, R21, R30 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 47k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R16, R32 |
| 2 | 47k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R17, R33 |
| 6 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R18, R23, R41, R42, R43, R52 |
| 1 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R25 |
| 1 | 180k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R34 |
| 4 | 1k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R38, R39, R40, R50 |
| 5 | 4k7 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R44, R45, R46, R53, R54 |
| 1 | 100k | R_Array_SIP9 | RN1 |
Euclid Control Board design files
The KiCad project lives in the m0xpd/EUCLIDplus repository on GitHub; these links point at the commit this page was built from.
Euclid Control Board: common questions
How big is the Euclid Control Board?
The Euclid Control Board measures 78 × 108 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Euclid Control Board?
105 components, from 28 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Euclid Control Board design files?
From the m0xpd/EUCLIDplus repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Euclid Control Board design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which m0xpd chose for the repository.
