2 layers34.5 × 16.5 mm
Digital flasher unit
Madarakante/digital-flasher-unit
KiCad: 555 timer-based digital flasher unit for car turn signals
11 parts
2 layers56.5 × 35.5 mm
DCMotorSpeedController
8amiul/DCMotorSpeedController555A design of DC Motor speed controller using PWM technique with a 555 Timer IC
- Size
- 56.5 × 35.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 11
- Pads
- 41
- Tracks, vias
- 91, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 16 Oct 2026
- Updated
- 20 Oct 2026
Overview
DCMotorSpeedController is an open-source printed circuit board by 8amiul, from the 8amiul/DCMotorSpeedController555 repository on GitHub. It is a 2-layer board of 56.5 × 35.5 mm with 15 parts on 11 nets, routed with 91 tracks and 0 vias.
It is built around the NE555P and IRLZ44N. Its parts include 3 capacitors, 3 resistors, 3 diodes, 2 connectors and 1 IC.
Main components
2README
README.mdDCMotorSpeedController555
It was my first attempt to design a PCB on KiCad.
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 1 | 100 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
| 1 | 100K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4 |
| 1 | 10K | Potentiometer_THT:Potentiometer_Alps_RK163_Single_Horizontal | R_POT1 |
| 1 | 10nF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C2 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D3 |
| 1 | 3.3nF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1 |
| 1 | 470uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C3 |
| 1 | IRLZ44N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
| 1 | Motor Terminal | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | POWER_SW | Button_Switch_THT:SW_Slide_SPDT_Straight_CK_OS102011MS2Q | SW1 |
| 1 | Power Terminal | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J2 |
Questions
How big is the DCMotorSpeedController PCB?
It measures 56.5 × 35.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DCMotorSpeedController use?
15 parts, built around the NE555P and IRLZ44N. 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 DCMotorSpeedController KiCad files?
From the 8amiul/DCMotorSpeedController555 repository on GitHub, at the commit this page was made from: the board is DCMotorSpeedController.kicad_pcb and its schematic DCMotorSpeedController.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DCMotorSpeedController design in my own project?
Its repository states no licence, so its author keeps all rights: ask 8amiul before reusing the design.
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