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Cytron Maker Motion 2350 Pro - 4x motor + 8x servo controller - RP2350
Cytron robot controller with RP2350 that handles 4 DC motors up to 3 A and 8 servos (5 V) on a single board.
- Power from 3.6 V to 16 V via the VIN terminals or USB-C
- 8 GPIO pins, 3 Maker ports and a USB host port
- CircuitPython preinstalled, MicroPython and C/C++ supported
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RP2350 robot controller on a single board
Cytron Motion 2350 Pro is a robot controller with an RP2350 microcontroller that drives 4 DC motors up to 3 A and 8 servos (5 V) on a single board. You also get 8 GPIO pins, 3 Maker ports for sensors and a USB host port for connecting a gamepad. With it you can build a mecanum-wheel robot without adding separate drivers.
- Power from 3.6 V to 16 V via the VIN terminals or the USB-C port
- Test buttons run each motor without writing any code
- The board comes with CircuitPython and a demo program preinstalled
Cytron Motion 2350 Pro with motor terminals and servo ports
4 x 3 A
DC motor channels, up to 5 A for 5 s
8
5 V servo ports
3.6-16 V
board supply voltage range
150 MHz
two Arm Cortex-M33 cores in the RP2350
Servo ports, GPIO and Maker ports on the board
Motors, servos and sensors without extra modules
The controller has 4 channels for brushed DC motors: each provides 3 A of continuous current and up to 5 A for less than 5 seconds, with PWM up to 20 kHz. You can reverse the direction of rotation by swapping the MA and MB wires. The servo ports are powered by a 5 V converter, which delivers up to 2 A in total when VIN is above 5.8 V and up to 3 A when it is lower.
- LEDs at every GPIO pin and every motor show the state of the outputs
- Two WS2812B (NeoPixel) RGB LEDs and a buzzer with a mute switch
- 3.3 V logic and a 3.3 V output with a total capacity of 200 mA for sensors
Components on the board
| No. | Component |
|---|---|
| 1 | Servo port status LEDs (GP0-GP7) |
| 2 | Servo ports (8 x SIG, 5 V, GND) |
| 3 | Buzzer mute switch |
| 4 | USB host port (type A) for a gamepad or joystick |
| 5 | Boot button |
| 6 | Reset button |
| 7 | Maker ports (JST-SH 4-pin), compatible with Qwiic and STEMMA QT |
| 8 | Debug port (SWD) |
| 9 | User buttons GP20 and GP21 |
| 10 | GPIO pins (GND, 3.3 V, SIG) |
| 11 | GPIO status LEDs |
| 12 | Power LED (PWR) |
| 13 | Test buttons for motors M3 and M4 |
| 14 | Motor terminals M3 and M4 |
| 15 | RGB LED (WS2812B, GP23) |
| 16 | Power switch ON/OFF |
| 17 | External switch connector (EXT. SW) |
| 18 | USB-C port for power and programming |
| 19 | VIN power input terminals (3.6-16 V) |
| 20 | RGB LED (WS2812B, GP23) |
| 21 | Motor status LEDs M1-M4 |
| 22 | Motor terminals M1 and M2 |
| 23 | Test buttons for motors M1 and M2 |
| 24 | Piezo buzzer (GP22) |
| 25 | RP2350 microcontroller |
| 26 | VIN voltage measurement jumper (GP29) |
What each pin does
The pin assignment is fixed and printed on the board, so you do not need to look it up in the schematic. Pins GP16-GP19 and GP26-GP29 remain free; they support I2C, SPI, UART and PWM, and GP26-GP29 also work as analog inputs.
- Servos: GP0-GP7, motors M1-M4: GP8-GP15
- User buttons: GP20 and GP21, buzzer: GP22, RGB LEDs: GP23
- USB host port: GP24 (D+) and GP25 (D-), VIN measurement: GP29 (ADC3)
Pinout and pin function diagram of the Motion 2350 Pro
GPIO pin functions
| Pin | Functions |
|---|---|
| GP16 | PWM0-A, SPI0 SDI, I2C0 SDA, UART0 TX |
| GP17 | PWM0-B, SPI0 CSn, I2C0 SCL, UART0 RX |
| GP18 | PWM1-A, SPI0 SCK, I2C1 SDA, UART0 CTS |
| GP19 | PWM1-B, SPI0 SDO, I2C1 SCL, UART0 RTS |
| GP26 | PWM5-A, SPI1 SCK, I2C1 SDA, UART1 CTS, ADC0 |
| GP27 | PWM5-B, SPI1 SDO, I2C1 SCL, UART1 RTS, ADC1 |
| GP28 | PWM6-A, SPI1 SDI, I2C0 SDA, UART0 TX, ADC2 |
| GP29 | PWM6-B, SPI1 CSn, I2C0 SCL, UART0 RX, ADC3 |
Bottom of the board with the RP2350 microcontroller
Programming in Python and C/C++
The board comes with CircuitPython and a demo program preinstalled: after power-up it plays a melody and lights the LEDs, and buttons GP20 and GP21 start a second demo. You upload programs from your computer via USB-C, and you can choose the language for writing code that suits your skill level.
- CircuitPython or MicroPython for a quick start without compiling
- C/C++ in the Pico SDK when you need full control over the RP2350
- Compatibility with the Raspberry Pi Pico ecosystem and its libraries
Motion 2350 Pro in action
A short manufacturer video about the Motion 2350 Pro board and its capabilities.
Video: Cytron Technologies (YouTube)
Is it the right choice for you?
A good choice if:
- you are building a robot with 4 drive motors, for example on mecanum wheels
- you want to control motors and servos from a single board without extra wiring
- you program in Python or C/C++ and know the Raspberry Pi Pico
Consider another option if:
- your motors draw more than 3 A: choose Cytron MDD10A up to 10 A
- you already have a Raspberry Pi Pico and are looking for a board for it: choose Cytron Robo Pico
Fun fact
The board can measure the battery on its own
On the bottom of the board there is a “Measure VIN” jumper. After you solder it, pin GP29 measures the supply voltage through a divider, divided by 6.1, so your program can monitor the state of the robot's battery.
Frequently asked questions
Can I power the motors from USB?
Yes, but the motors then receive the USB voltage reduced by about 0.4 V. For more powerful drives, connect the VIN terminals, which accept 3.6 V to 16 V.
Can I connect Grove sensors?
Yes, the Maker ports have JST-SH connectors compatible with Qwiic and STEMMA QT, and you can connect Grove sensors with a Grove to JST-SH adapter cable.
Does the controller have protection?
It has no overcurrent protection, so keep to 3 A of continuous current per channel and up to 5 A for less than 5 seconds. A higher current may damage the controller.
The controller with cables, feet, connectors and screwdriver
What's in the box
- 1 x Cytron Motion 2350 Pro controller
- 1 x STEMMA QT / Qwiic cable (150 mm)
- 2 x Grove to JST-SH cable (200 mm)
- 1 x Silicone anti-slip feet
- 4 x Connector for construction bricks
- 1 x Mini screwdriver
Technical specification
| Parameter | Value |
|---|---|
| Microcontroller | Raspberry Pi RP2350, 2 Arm Cortex-M33 cores up to 150 MHz |
| Memory | 520 kB SRAM, 2 MB QSPI Flash |
| Motor driver | 4 channels for brushed DC motors, PWM up to 20 kHz |
| Motor current | 3 A continuous, 5 A peak (up to 5 s) per channel |
| Power supply | 3.6-16 V via VIN terminals or USB-C |
| Servos | 8 ports 5 V, 3 A in total (VIN < 5.8 V) or 2 A (VIN > 5.8 V) |
| GPIO | 8 pins 3.3 V (GP16-GP19, GP26-GP29), including 4 ADC inputs |
| 3.3 V output | up to 200 mA in total (GPIO and Maker ports) |
| Maker ports | 3 x JST-SH 4-pin, compatible with Qwiic and STEMMA QT |
| USB | USB-C (power and programming), USB host type A (5 V, 100 mA) |
| Buttons | 8 motor test buttons, 2 user buttons (GP20, GP21), Boot, Reset |
| LEDs | GPIO and servo status, motor status, power, 2 x RGB WS2812B |
| Buzzer | piezo (GP22) with a mute switch |
| Programming | CircuitPython (preinstalled), MicroPython, C/C++ |
| Dimensions | 95.2 x 57.2 x 8 mm |
| Operating temperature | -20 °C to 85 °C |
Useful links
| Name | Value |
|---|---|
| Voltage to | 3.6 V |
| Voltage from | 16.0 V |
| Channels |
|
| Sensor - type | motor driver |
| UC - Microcontroller | RP2350 |
| UC - Core | Cortex M33 |
| UC - Flash | 2 MB |
| UC - RAM | 520 kB |
| UC - core | 2. Dual Core |
| UC - freq | 150 MHz |
| UC - Connector | USB typ C |
| Width | 10.5 cm |
| Height | 6 cm |
| Depth | 2.5 cm |
| Weight | 0.066 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
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If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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