GP2040-CE: gamepad firmware for the Raspberry Pi Pico #Gaming #RP2040 #PiDay #Raspberry_Pi @Hackaday

GP2040-CE is a gamepad firmware for the Raspberry Pi Pico and other boards based on the RP2040 microcontroller, and provides high performance with a rich feature set across multiple platforms. GP2040-CE is compatible with PC, MiSTer, Android, Raspberry Pi, Nintendo Switch, PS3 and PS4 (legacy controller support).


  • Selectable input modes – XInput, DirectInput, and Nintendo Switch
  • Overclocked polling rate for less than 1 ms of input latency in all modes
  • Multiple SOCD cleaning modes – Neutral, Up Priority (a.k.a. Stickless), and Second Input Priority
  • Left and Right stick emulation via D-pad inputs as well as dedicated toggle switches
  • Dual direction via D-pad + LS/RS
  • Reverse input via button
  • Turbo and Turbo LED with selectable speed
  • Per-button RGB LED support
  • PWM Player indicator LED support (XInput only)
  • Multiple profile support
  • Support for 128×64 monochrome I2C displays – SSD1306, SH1106, and SH1107 compatible
  • Custom startup splash screen and easy image upload via web configuration
  • Support for passive buzzer speaker (3v or 5v)
  • Built-in, embedded web configuration – no download required!

But how does the humble RP2040 (be it in Pico guise or compatible) provide a web page, you ask? The quick answer comes thanks to Microsoft and their Remote Network Driver Interface Specification (RNDIS) support. RNDIS implements a network device over USB, and luckily, other OSs have caught up and implemented it also. The GP2040 firmware leverages TinyUSB to implement the RNDIS protocol, lwIP to implement a lightweight network stack (whilst only occupying a rather paltry 40k of flash), and finally react-bootstrap to code the actual web logic. (Aren’t modern open source libraries awesome?) If you feel the need to use the source (whether you are named Luke or not) the project can be found on the GP2040 GitHub.

Read more on the official website and in a Hackaday article.

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community!

CircuitPython – The easiest way to program microcontrollers –

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.