4 layers94.4 × 72.8 mm
RP2040 base
Twisted-Fields/rp2040-motor-controller
A dual channel brushless motor controller based on the RP2040 microcontroller, designed in Kicad.
325 parts419
4 layers90 × 26 mm
User interface
Twisted-Fields/rp2040-motor-controller419A dual channel brushless motor controller based on the RP2040 microcontroller, designed in Kicad.
- Size
- 90 × 26 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 45
- Nets
- 27
- Pads
- 134
- Tracks, vias
- 386, 62
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 9 Jun 2022
- Updated
- 2 Aug 2024
Overview
User interface is an open-source printed circuit board by Twisted-Fields, from the Twisted-Fields/rp2040-motor-controller repository on GitHub. It is a 4-layer board of 90 × 26 mm with 45 parts on 27 nets, routed with 386 tracks and 62 vias.
It is built around the PCA9557PW, TLV1117LV33DCYR and WS2812B. Its parts include 11 resistors, 8 diodes, 8 switches, 6 capacitors and 3 ICs. It belongs with the robots and motor control and interfaces and adapters boards of this library.
Main components
3
PCA9557PW
TSSOP-16-40℃~+85℃ 10mA 2.3V~5.5V 250nA 400kHz 8 8 I2C、SMBus No Interrupt Output Open-drain Reset function、Cascading and address extension TSSOP-16 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
TLV1117LV33DCYR
SOT-223-40℃~+125℃@(TJ) 0.003%Vout 1 1.2V@(1A) 12V 1A 3.3V 75dB@(120Hz) Fixed Over Current Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSJSMSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
README
README.mdrp2040-motor-controller
A dual channel brushless motor controller based on the RP2040 microcontroller
The boards cost between $15 and $40 each depending on version and quantity.
NOTE: This design is still changing. There is currently one board version in
this repo. This is our dual CPU version with CAN bus and extra connectors for
our robot. This version also improves the current measurement circuit compared
to the first rev.
Once we have verified the improved current measurement circuit, we will also
support a single CPU version which is smaller and slightly cheaper. This will
look similar to our first prototype version shown in the top of the photo at the
bottom of this document. To view the files for that board see this commit:
https://github.com/Twisted-Fields/rp2040-motor-controller/commit/ceeeb0ee0d24856a9ad8b6b036be5baf15e3ead6Warning These files are still under development and undergoing testing. While we do aspire to produce a design that others can easily fabricate, we do not yet recommend making them for yourself! Please post questions on board status to our community forum at community.twistedfields.com.
Our dream is that you will fab your own boards, make changes, and share your work - giving this design life beyond our efforts.
Designed by Taylor Alexander for Twisted Fields, for the Acorn Precision Farming Rover.
Many thanks to Daniel Theobald. Without your financial support and encouragement this project would not have been possible.
Thanks to all of our supporters on Open Collective. Your contributions are helping grow this project in to a sustainable open source organization.
You can support this project yourself at our Open Collective Page.
To learn more about Acorn, please see our announcement blog post. Or see a more recent technical update here.
Parts
45| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 |
| 8 | WS2812B | RP2040_minimal:LED_WS2812_3528_3.5x2.8mm_P1.5mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 5 | SW_SPST | Button_Switch_SMD:SW_SPST_B3S-1000 | SW1, SW2, SW3, SW4, SW5 |
| 4 | MountingHole | RP2040_minimal:MountingHole_3.9mm_Plastite_#6 | H1, H2, H3, H4 |
| 3 | SW_SPDT | parts:CS12ANW03 | SW6, SW7, SW8 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric | C6, C7 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C8, C10 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C5, C9 |
| 1 | AUX Encoder | parts:CONN-TH_5P-P2.54_HCTL_HC-2510-5AW | J1 |
| 1 | I2C OLED | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | LOGO | taylor_footprints:twisted | G*** |
| 1 | LOGO | taylor_footprints:twisted_icon | G*** |
| 1 | LOGO | taylor_footprints:twisted_2 | G*** |
| 1 | PCA9557PW | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U3 |
| 1 | TLV1117LV33DCYR | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | TXS0101DCKR | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U4 |
Questions
How big is the User interface PCB?
It measures 90 × 26 mm and has 4 copper layers, 1.61 mm thick.
What parts does the User interface use?
45 parts, built around the PCA9557PW, TLV1117LV33DCYR and WS2812B. 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 User interface KiCad files?
From the Twisted-Fields/rp2040-motor-controller repository on GitHub, at the commit this page was made from: the board is user_interface/user_interface.kicad_pcb and its schematic RP2040_base/RP2040_base.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the User interface design in my own project?
Its repository states no licence, so its author keeps all rights: ask Twisted-Fields before reusing the design.
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