2 layers47.6 × 27.3 mm
2 layers84 × 84 mm
MotorSpeedControl
JosephEoff/Bigfoot12Bigfoot - Sewing machine motor speed control
- Size
- 84 × 84 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 38
- Pads
- 100
- Tracks, vias
- 223, 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 11 Nov 2023
- Updated
- 12 Nov 2023
Overview
MotorSpeedControl is an open-source printed circuit board by JosephEoff, from the JosephEoff/Bigfoot repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 84 × 84 mm with 27 parts on 38 nets, routed with 223 tracks and 1 via.
It is built around the RAC10E-12SK/277, KBP304 and NTPF190N65S3H. Its parts include 4 capacitors, 4 resistors, 4 connectors, 3 ICs and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3README
README.mdBigfoot
Bigfoot is a sewing machine motor speed control made to truly control the speed rather than merely regulating the power.
| Bigfoot and an Adler class 8 sewing machine |
|---|
 |
It uses feedback through a tachometer and a PID controller to maintain the speed set by the foot pedal. A sewing machine with a Bigfoot controller can steadily work its way through thick stacked leather - provided you are using a solid old vintage sewing machine.
Here's Bigfoot and the Adler working through eight, then two, then four layers of fake leather while maintaining a steady speed:
https://github.com/JosephEoff/Bigfoot/assets/13119635/e1ab42f6-7f08-4af5-ab49-b018099e2578
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Potentiometers:Potentiometer_Trimmer_Bourns_3339W_Vertical | RV1, RV2, RV3, RV4 |
| 2 | 100nF | Capacitors_SMD:C_0805 | C1, C2 |
| 2 | RAC10E-12SK | RECOM:RAC10E | U1, U2 |
| 1 | 100 | Resistors_SMD:R_1206 | R1 |
| 1 | 100k | Resistors_SMD:R_0805 | R3 |
| 1 | 10k | Resistors_SMD:R_0805 | R2 |
| 1 | 10µF | Capacitors_ThroughHole:CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 1N4005 | Diodes_ThroughHole:D_DO-41_SOD81_P12.70mm_Horizontal | D2 |
| 1 | 470k 0.25W | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 47µ, 400VDC | Capacitors_ThroughHole:CP_Radial_D18.0mm_P7.50mm | C4 |
| 1 | AC IN | Terminal_Blocks:TerminalBlock_bornier-3_P5.08mm | J2 |
| 1 | ADuM4120 | Analog_Devices_GateDriver:SOIC-IC6 | U3 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | KBP304 | Diodes_Inc_Bridge_Rectifier:KBP | D1 |
| 1 | Motor | Terminal_Blocks:TerminalBlock_bornier-3_P5.08mm | J3 |
| 1 | NTPF190N65S3H | TO_SOT_Packages_THT:TO-220-3_Vertical | Q1 |
| 1 | SW_Push | Buttons_Switches_ThroughHole:SW_TH_Tactile_Omron_B3F-10xx | SW1 |
| 1 | Tachometer | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J4 |
| 1 | Throttle | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J1 |
The 24 most common of 27 parts.
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Questions
How big is the MotorSpeedControl PCB?
It measures 84 × 84 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MotorSpeedControl use?
27 parts, built around the RAC10E-12SK/277, KBP304 and NTPF190N65S3H. 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 MotorSpeedControl KiCad files?
From the JosephEoff/Bigfoot repository on GitHub, at the commit this page was made from: the board is KiCad-Files/MotorSpeedControl.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MotorSpeedControl design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).