Euclid Main Board
About the Euclid Main Board
Euclid Main 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 128 components from 44 distinct parts.
Other key parts include the TL084, 4001, 4081, 40106 and 4013. By type, the board carries 59 resistors, 25 capacitors, 23 diodes, 11 ICs, 6 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 Main Board, which had some errors on the bottom side - the project associated with this board is in the [v1 Main Board folder and the errors are indicated on the schematic. This v1 Main Board also does not include the footprint for C28, which was found necessary to avoid jitter on the internal oscillator signal's duty cycle.]
Main components on the Euclid Main Board
Euclid Main Board bill of materials (BOM)
128 components, 44 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | TL084 | DIP-14_W7.62mm_LongPads | U1, U6, U7 |
| 1 | 4001 | DIP-14_W7.62mm_LongPads | U2 |
| 2 | 4081 | DIP-14_W7.62mm_LongPads | U3, U8 |
| 1 | 40106 | DIP-14_W7.62mm_LongPads | U4 |
| 1 | 4013 | DIP-14_W7.62mm_LongPads | U5 |
| 2 | 4030 | DIP-14_W7.62mm_LongPads | U9, U10 |
| 1 | 4024 | DIP-14_W7.62mm_LongPads | U11 |
| 5 | BC546 | TO-92_HandSolder | Q1, Q2, Q3, Q5, Q6 |
| 1 | BC556 | TO-92_HandSolder | Q4 |
| 1 | 2510- | IDC-Header_2x05_P2.54mm_Vertical | X1 |
| 2 | ~ | PinHeader_1x18_P2.54mm_Vertical | JP1, JP2 |
| 1 | 10k | Potentiometer_Bourns_3296W_Vertical | RV1 |
| 2 | D_Schottky_Small | D_A-405_P7.62mm_Horizontal | D1, D3 |
| 14 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D2, D4, D5, D6, D7, D8, D9, D12 +6 |
| 1 | 1N4148 | D_A-405_P2.54mm_Vertical_AnodeUp | D10 |
| 1 | 1N4148 | D_A-405_P7.62mm_Horizontal | D11 |
| 5 | 1N4148 | D_DO-35_SOD27_P2.54mm_Vertical_KathodeUp | D14, D15, D16, D19, D23 |
| 2 | 0.1u | C_Disc_D6.0mm_W2.5mm_P5.00mm | C1, C9 |
| 2 | 22u | CP_Radial_D6.3mm_P2.50mm | C2, C10 |
| 14 | 100n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C3, C4, C5, C6, C7, C8, C11, C12 +6 |
Show 24 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 33n | C_Disc_D3.8mm_W2.6mm_P2.50mm | C14 |
| 3 | 100n | C_Disc_D4.7mm_W2.5mm_P5.00mm | C15, C16, C17 |
| 1 | 2n2 | C_Disc_D4.3mm_W1.9mm_P5.00mm | C18 |
| 1 | 4n7 | C_Disc_D3.8mm_W2.6mm_P2.50mm | C19 |
| 1 | 10n | C_Disc_D3.8mm_W2.6mm_P2.50mm | C20 |
| 9 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R1, R6, R26, R31, R32, R33, R43, R44 +1 |
| 2 | 10 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R5 |
| 8 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R4, R7, R15, R23, R34, R45, R57 |
| 4 | 22k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8, R19, R24, R39 |
| 1 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R9 |
| 3 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R11, R14 |
| 2 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R12, R13 |
| 1 | 47k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R16 |
| 1 | 11k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R17 |
| 1 | 12k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R18 |
| 1 | 1M | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R20 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R21 |
| 1 | 2K2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R22 |
| 5 | 2k7 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R25, R35, R46, R58, R62 |
| 9 | 200k | R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R27, R28, R29, R36, R37, R38, R47, R48 +1 |
| 5 | 120k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R30, R41, R51, R60, R63 |
| 3 | 200k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R40, R49, R61 |
| 1 | 56k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R42 |
| 1 | 10k | R_Array_SIP9 | RN1 |
Euclid Main 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 Main Board: common questions
How big is the Euclid Main Board?
The Euclid Main Board measures 78 × 108 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Euclid Main Board?
128 components, from 44 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 Main 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 Main Board design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which m0xpd chose for the repository.
