2 layers68.8 × 53.6 mm
Relatively Universal ROM Programmer
AndersBNielsen/Relatively-Universal-ROM-Programmer
Hardware to program W27C512 EEPROM or any 24/28/32 pin ROM requiring from 5V to 27V programming voltage.
149 parts257GPL-3.0
2 layers69.1 × 53.8 mm
Motor controller
AlanFord/self-balancing-stick79Dual Axis Reaction Wheel Inverted Pendulum
- Size
- 69.1 × 53.8 mm
- Copper layers
- 2
- Thickness
- 0.81 mm
- Parts
- 25
- Nets
- 40
- Pads
- 139
- Tracks, vias
- 240, 36
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 20 Aug 2017
- Updated
- 6 Jun 2023
Overview
Motor controller is an open-source printed circuit board by AlanFord, from the AlanFord/self-balancing-stick repository on GitHub, published under the MIT licence. It is a 2-layer board of 69.1 × 53.8 mm with 25 parts on 40 nets, routed with 240 tracks and 36 vias.
It is built around the ARDUINO UNO R3. Its parts include 8 connectors, 4 diodes, 2 capacitors, 2 resistors and 2 ICs. It belongs with the robots and motor control boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
optional_motor_controller_pcb/README.mdArduino Shield for the Self-Balancing Stick
The Arduino firmware supports options for two different motor drivers - the Pololu Dual MAX14870 Motor Driver Shield (https://www.pololu.com/product/2519) and a custom shield that also uses the Maxim MAX14870 chips as motor drivers.
The Pololu motor driver shield was used in the initial testing stages to ensure the hardware and software worked together properly. However, I found the Dupont headers to make a less-than-satisfactory connection when moving parts are involved. Hence the move to a custom design.
The design for the Arduino shield is intended to include motor drivers for two dc motors as well as the interface for a GY-521 Gyro.
The motor drivers each use a MAX14780 motor driver IC. A barrel jack (2.1 mm, center-positive) on the shield provides power for the motors (12V, 4.2A max). Separate pin headers are made available for connecting the motors and the GY-521 gyro. The motors are Pololu 4.4:1 gear motors witha 48 CPR encoder, requireing a 6-pin connector. The GY-521 interface also requires a 6-pin connector.
The Arduino pins used by each of the connectors are as follows:
GY-521 -> Arduino
- SCL -> A5/SCL
- SDA -> A4/SDA
- INT -> A3
Left Motor -> Arduino
- Vcc -> +5V
- PWM -> D7
- DIR -> D8
- Encoder_A -> D2 (Interrrupt 0)
- Encoder_B -> A2
Right Motor -> Arduino
- Vcc -> +5V
- PWM -> D12
- DIR -> D13
- Encoder_A -> D3 (Interrupt 1)
- Encoder_B -> D6
The shield contains LEDs for both motors that indicate the direction the motor is being driven.
- Red LED -> DIR=1 (Clockwise)
- Green LED -> DIR=0 (Counterclockwise)
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J101, J102, J104, J106 |
| 2 | 1 uF | Capacitor_SMD:C_0805_2012Metric | C101, C102 |
| 2 | 4.7K | Resistor_SMD:R_0805_2012Metric | R101, R102 |
| 2 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J105, J108 |
| 2 | GREEN | LED_SMD:LED_0805_2012Metric | D103, D104 |
| 2 | MAX14780 | motor_controller:max14870 | U101, U102 |
| 2 | RED | LED_SMD:LED_0805_2012Metric | D101, D102 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | ~FAULT, ~FAULT |
| 2 | TestPoint_Pad_D2.0mm | TestPoint:TestPoint_Pad_D2.0mm | +12V, GND |
| 1 | Arduino_UNO_R3 | Module:Arduino_UNO_R3 | A101 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal | J103 |
| 1 | Conn_01x10 | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J107 |
The 23 most common of 25 parts.
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Questions
How big is the Motor controller PCB?
It measures 69.1 × 53.8 mm and has 2 copper layers, 0.81 mm thick.
What parts does the Motor controller use?
25 parts, built around the ARDUINO UNO R3. 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 Motor controller KiCad files?
From the AlanFord/self-balancing-stick repository on GitHub, at the commit this page was made from: the board is optional_motor_controller_pcb/motor_controller.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Motor controller design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).