DiyMEFI
About the DiyMEFI PCB
DiyMEFI is an open source PCB design by mattmon, published on GitHub. It is a 2-layer board measuring 148.1 × 86.8 mm, with 84 components from 36 distinct parts.
Other key parts include the SP721APP, MEGA PRO Embedded, DRV8825, LM2940T-5.0 and ERZ. By type, the board carries 32 capacitors, 21 resistors, 15 transistors, 7 ICs, 4 connectors and 3 diodes.
Main components on the DiyMEFI
DiyMEFI bill of materials (BOM)
84 components, 36 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | SP721APP | DIP-8_W7.62mm | IC1, IC2 |
| 1 | MEGA PRO Embedded | MODULE_MEGA_PRO_EMBED_CH340G___ATMEGA2560 | U1 |
| 1 | DRV8825 | IC_DRV8825_STEPPER_MOTOR_DRIVER_CARRIER | U2 |
| 1 | LM2940T-5.0 | TO-220-3_Vertical | U3 |
| 1 | ERZ | RV_Disc_D15.5mm_W4.2mm_P7.5mm | U4 |
| 1 | MAX232 | DIP-16_W7.62mm | U5 |
| 12 | STP62NS04Z | TO-220-3_Vertical | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +4 |
| 3 | BS170 | TO-92_Inline | Q13, Q14, Q15 |
| 1 | 12092320 INPUT | 12129008 | J1 |
| 1 | 12092320 OUTPUT | 12129008 | J2 |
| 1 | EXPANSION | MOLEX_430452227 | J3 |
| 1 | HC-05 | PinSocket_1x06_P2.54mm_Vertical | J4 |
| 2 | NA | PinHeader_1x03_P2.54mm_Vertical | INJ1, INJ2 |
| 1 | 1N5818 | D_DO-41_SOD81_P7.62mm_Horizontal | D1 |
| 1 | 1N5919BG | D_DO-41_SOD81_P7.62mm_Horizontal | D2 |
| 1 | 1N4004 | D_DO-41_SOD81_P7.62mm_Horizontal | D3 |
| 1 | 10u | CP_Radial_Tantal_D6.0mm_P2.50mm | C1 |
| 12 | u1 | C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C3, C5, C7, C9, C12, C13, C15 +4 |
| 1 | 47u | CP_Radial_Tantal_D6.0mm_P2.50mm | C4 |
| 10 | u22 | C_Disc_D3.8mm_W2.6mm_P2.50mm | C6, C8, C10, C11, C14, C16, C17, C20 +2 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | u1 | C_Disc_D6.0mm_W2.5mm_P5.00mm | C21, C24, C27 |
| 5 | 1uf | C_Disc_D3.8mm_W2.6mm_P2.50mm | C28, C29, C30, C31, C32 |
| 3 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R4 |
| 1 | 56 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 2k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
| 2 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R11 |
| 2 | 2k49 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R8 |
| 1 | 3k9 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R9 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10 |
| 3 | 1k | R_Array_SIP8 | RN1, RN4, RN8 |
| 1 | 100k | R_Array_SIP5 | RN2 |
| 2 | 470 | R_Array_SIP6 | RN3, RN10 |
| 1 | 470 | R_Array_SIP8 | RN5 |
| 1 | 100k | R_Array_SIP9 | RN6 |
| 1 | 1k | R_Array_SIP4 | RN7 |
| 1 | 10k | R_Array_SIP4 | RN9 |
DiyMEFI design files
The KiCad project lives in the mattmon/diyMEFI repository on GitHub; these links point at the commit this page was built from.
- LayoutdiyMEFI.kicad_pcb
- SchematicdiyMEFI.kicad_sch
DiyMEFI: common questions
How big is the DiyMEFI PCB?
The DiyMEFI measures 148.1 × 86.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the DiyMEFI?
84 components, from 36 distinct parts. The full bill of materials is listed on this page.
Where can I download the DiyMEFI design files?
From the mattmon/diyMEFI repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the DiyMEFI design in my own project?
The repository has no license, so all rights stay with mattmon. Use it as a reference, and ask the author before reusing the design.