DC motor speed controller
About the DC motor speed controller PCB
DC motor speed controller is an open source PCB design by shreyashjaiswal4041, published on GitHub. It is a 2-layer board measuring 59 × 33.5 mm, with 15 components from 10 distinct parts.
Other key parts include the NE555P. By type, the board carries 4 diodes, 3 capacitors, 3 resistors, 2 connectors, 1 IC and 1 transistor.
From the project
pcb
🧩 Key Features • ✅ Proper grounding strategy (Star / Split Ground / Solid GND Plane) • ✅ Controlled trace width for current handling • ✅ Decoupling capacitor placement best practices • ✅ EMI-aware routing • ✅ Thermal management considerations • ✅ Silkscreen labeling for assembly
/hardware ├── schematic.kicadsch ├── pcblayout.kicadpcb ├── gerbers/ ├── BOM.csv ├── 3Dmodel/ └── fabrication_files/
Main components on the DC motor speed controller
DC motor speed controller bill of materials (BOM)
15 components, 10 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NE555P | DIP-8_W7.62mm | U1 |
| 1 | TIP122 | TO-220-3_Vertical | Q1 |
| 2 | SCREW_TERMINAL_01X02 Screw_Terminal_01x02 | TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1, J2 |
| 1 | 100K 100k | Potentiometer_Alps_RK163_Single_Horizontal | RV1 |
| 3 | 1N4007 | D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3 |
| 1 | LED | LED_D5.0mm | D4 |
| 2 | 100NF 100nf | C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2 |
| 1 | 1000UF 1000uf | CP_Radial_D10.0mm_P5.00mm | C3 |
| 2 | 1K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 1 | 2.2K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
DC motor speed controller design files
The KiCad project lives in the shreyashjaiswal4041/pcb_projects repository on GitHub; these links point at the commit this page was built from.
DC motor speed controller: common questions
How big is the DC motor speed controller PCB?
The DC motor speed controller measures 59 × 33.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the DC motor speed controller?
15 components, from 10 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 DC motor speed controller design files?
From the shreyashjaiswal4041/pcb_projects 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 DC motor speed controller design in my own project?
The repository has no license, so all rights stay with shreyashjaiswal4041. Use it as a reference, and ask the author before reusing the design.
