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Pimoroni Servo 2040 - RP2040 18 Channel Servo Controller
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Build the hexapod/robot arm/other articulated contraption of your dreams with this all-in-one RP2040 powered servo controller with current measurement, se...
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Build the hexapod/robot arm/other articulated contraption of your dreams with this all-in-one RP2040 powered servo controller with current measurement, sensor headers, and RGB LEDs.
Servo 2040 is a standalone servo controller for making things with lots of moving parts. It has pre-soldered pin headers for plugging in up to 18 servos - enough for the leggiest of hexapod walkers or plenty of degrees of freedom for your robotic arms, legs, or tentacles. Servos can be pretty power-hungry, especially the chonky ones, so the folks at Pimoroni added some neat current monitoring functions so you can keep an eye on power consumption.
There are six addressable WS281x RGB LEDs (AKA NeoPixels!) for visual feedback and status reports, plus pin headers to connect up to six analog sensors - useful for sensing where the ground is, especially if you're about to crash into a wall, or how much pressure The Claw is exerting on your hapless test subject. We've also popped a QT connector on there, to make it super easy to add a STEMMA QT or Qwiic breakout or two.
Servo 2040 is supported by a well-documented C++/MicroPython servo library with lots of examples to show you how to use the individual features (and everything together).
Features
- Powered by RP2040 (Dual Arm Cortex M0+ running at up to 133Mhz with 264kB of SRAM)
- 2MB of QSPI flash supporting XiP
- 18 sets of header pins for connecting 3 pin hobby servos
- Supports higher voltage servos (up to 11V) *
- 6 addressable RGB LEDs/Neopixels
- 6 sets of header pins for connecting analog sensors
- Onboard voltage and current sensing
- Reset and BOOT button (the BOOT button can also be used as a user button)
- USB-C connector for programming and power (3A max)
- Screw terminals for supplying external power (with reverse polarity protection) (10A max continuous current)
- QT (STEMMA QT/Qwiic) connector for breakouts
- Fully assembled (no soldering required)
- C++/MicroPython libraries
- Schematic
- Mechanical drawing
Notes
- Measurements: 62mm x 42mm x 12mm (L x W x H, including connectors). The mounting holes are M2.5 and 2.7mm in from each edge.
- * If you want to run servos with a higher voltage than 5V, you'll need to cut the 'Separate USB and Ext. Power' trace on the back of the board to prevent the RP2040 from getting damaged by the increased voltage.
- If you cut this trace you'll need to provide separate power for the board logic (through USB or the 5V on the broken-out header).
- When programming a battery-powered robot through USB Pimoroni recommends using something like a data only USB adaptor to avoid back-powering your computer, or the battery.
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- Headers
- Rows of metal pins used to plug a module into a breadboard or connect it with jumper wires. Pre-soldered headers make the module easier to use straight away without needing to solder the pins yourself.
- M2.5
- A metric screw thread size with a 2.5 mm nominal diameter. It matters for mounting because screws, standoffs, and holes must use the same size to fit securely without damaging the board.
- MicroPython
- A version of the Python programming language made to run on microcontrollers. It matters because it lets beginners write readable code to control LEDs, sensors, motors and displays without needing to start with lower-level languages.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- reverse polarity protection
- A circuit feature that helps protect the board if power is connected the wrong way around. It matters because it can reduce the chance of damaging the breakout during wiring mistakes, especially in classroom or prototyping use.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
- RP2040
- A microcontroller chip used on many maker boards, with enough speed and flexible I/O for some camera and display projects. Compatibility with RP2040 matters because camera modules often need many pins and careful timing to read image data successfully.
- servo
- A servo is a motor with built-in position control, usually told to move to a specific angle by a control signal. It matters when you need repeatable movement, such as steering, arms, flaps, or linkages, rather than continuous spinning.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
- USB-C
- A modern reversible USB connector used for power and data connections. On this product it matters because it can connect directly to a computer as well as to a microcontroller project.
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