2 layers
Transformer less power supply
arijit-arijit/pcb_design
my journey in learning to design PCBs from scratch through tutorials and projects
18 parts1
2 layers
DC motor speed controller
arijit-arijit/pcb_design1my journey in learning to design PCBs from scratch through tutorials and projects
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 11
- Pads
- 46
- Tracks, vias
- 64, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Dec 2025
- Updated
- 22 Dec 2025
Overview
DC motor speed controller is an open-source printed circuit board by arijit-arijit, from the arijit-arijit/pcb_design repository on GitHub. It is a 2-layer board with 19 parts on 11 nets, routed with 64 tracks and 0 vias.
It is built around the NE555P and TIP122. Its parts include 4 diodes, 3 capacitors, 3 resistors, 2 connectors and 1 IC. It belongs with the robots and motor control boards of this library.
Main components
2README
README.mdpcb_design
my journey of learning PCB design from scratch through tutorials and projects
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3 |
| 2 | 100nF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2 |
| 2 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 2 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1, J2 |
| 1 | 1000nF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C3 |
| 1 | 100k | Potentiometer_THT:Potentiometer_Alps_RK163_Single_Horizontal | RV1 |
| 1 | 2.2k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
| 1 | LED | LED_THT:LED_D5.0mm | D4 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | TIP122 | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
The 15 most common of 19 parts.
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Questions
What parts does the DC motor speed controller use?
19 parts, built around the NE555P and TIP122. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the DC motor speed controller KiCad files?
From the arijit-arijit/pcb_design repository on GitHub, at the commit this page was made from: the board is DC_motor_speed_controller/DC_motor_speed_controller.kicad_pcb and its schematic ACtoDCconverter/ACtoDCconverter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DC motor speed controller design in my own project?
Its repository states no licence, so its author keeps all rights: ask arijit-arijit before reusing the design.