Repositories list

• protocol

  Public
  The main repository for the Harp standard

  harp-tech

  MIT License

  •6•5•29•4•Updated Feb 20, 2026Feb 20, 2026

• device.stepperdriver

  Public
  A stepper motor controller device for four motors including individual quadrature encoders.

  stepper-motor-driverharp-techbonsai-rx

  C#

  •

  Other

  •1•1•4•1•Updated Feb 19, 2026Feb 19, 2026

• reflex-generator

  Public
  Provides project templates and automatic generation of firmware and Bonsai interface code for new Harp devices.

  harp-techbonsai-rx

  C#

  •

  MIT License

  •4•1•6•3•Updated Feb 13, 2026Feb 13, 2026

• device.behavior

  Public
  A multi-purpose device tailored to behavioral experiments. It allows control of pokes, RGB LEDs, LEDs, cameras, servo motors and a quadrature counter.

  behaviorharp-techbonsai-rx

  C#

  •3•4•2•3•Updated Feb 11, 2026Feb 11, 2026

• toolkit

  Public

  harp-tech/toolkit’s past year of commit activity
  A tool for inspecting, updating and interfacing with Harp devices from the command-line.

  clidotnetharp-tech+ 1bonsai-rx

  C#

  •

  MIT License

  •0•1•5•1•Updated Feb 10, 2026Feb 10, 2026

• repo-crawler

  Public
  Code to query and automatically generate assets from the harp-tech orgnization's repositories

  Python

  •

  MIT License

  •0•3•0•0•Updated Feb 5, 2026Feb 5, 2026

• Harp.Benchmark

  Public
  A repository for tests for harp devices

  C#

  •

  MIT License

  •0•0•0•0•Updated Feb 1, 2026Feb 1, 2026

• device.olfactometer

  Public
  This device allows the delivery of odor stimuli

  olfactometerharp-techbonsai-rx

  C#

  •1•1•1•1•Updated Jan 29, 2026Jan 29, 2026

• device.multipwm

  Public
  Generator of 4 independent and configurable PWM signals with optional trigger inputs

  multi-pwmharp-techbonsai-rx

  C#

  •1•0•0•1•Updated Dec 11, 2025Dec 11, 2025

• device.synchronizer

  Public
  Harp Synchronizer is used to record and timestamp up to 9 digital input signals.

  digital-inputsharp-techbonsai-rx

  C#

  •2•0•0•1•Updated Dec 11, 2025Dec 11, 2025

• harp-tech.github.io

  Public
  C#

  •

  Creative Commons Attribution Share Alike 4.0 International

  •3•0•7•6•Updated Nov 9, 2025Nov 9, 2025

• device.hobgoblin

  Public
  A simple multi-purpose device for learning the basics of the Harp standard

  C#

  •

  MIT License

  •0•0•2•1•Updated Nov 9, 2025Nov 9, 2025

• device.ledarray

  Public
  Controls up to 2 separate RGB LED Arrays and one common Infrared LED

  led-arrayharp-techbonsai-rx

  C#

  •2•0•0•2•Updated Oct 29, 2025Oct 29, 2025

• device.rgbarray

  Public
  Device to control up to 2 strips of RGB LEDs

  rgb-ledharp-techbonsai-rx

  C#

  •1•0•0•1•Updated Oct 29, 2025Oct 29, 2025

• device.clocksynchronizer

  Public
  This device generates programmable timestamps for up to 6 harp devices

  clock-synchronizationclock-generatorharp-tech+ 1bonsai-rx

  C

  •2•1•0•1•Updated Oct 29, 2025Oct 29, 2025

• device.analoginput

  Public
  This device reads 4 analog signals at 16 bits with very low noise.

  analog-inputharp-techbonsai-rx

  C#

  •3•0•0•1•Updated Oct 29, 2025Oct 29, 2025

• device.loadcells

  Public
  Device to analog amplify and A/D convert simultaneously four load cells

  load-cellsharp-techbonsai-rx

  C#

  •2•1•0•2•Updated Oct 29, 2025Oct 29, 2025

• device.syringepump

  Public
  A stepper-motor based syringe pump designed to deliver small liquid volumes

  syringe-pumpharp-techbonsai-rx

  C#

  •1•1•0•1•Updated Oct 29, 2025Oct 29, 2025

• device.cameracontroller

  Public
  Device capable of triggering up to two cameras or servo motors

  camera-triggeringharp-techbonsai-rx

  C#

  •1•0•0•1•Updated Oct 29, 2025Oct 29, 2025

• device.audioswitch

  Public
  Harp multiplexer device that allows an analog input signal to be forwarded to several output channels.

  audio-switchharp-techbonsai-rx

  C#

  •1•0•0•2•Updated Oct 24, 2025Oct 24, 2025

• device.timestampgeneratorgen3

  Public
  This device generates programable timestamps to up to 6 harp devices and includes an internal battery for long term experiments

  clock-synchronizationclock-generatorharp-tech+ 1bonsai-rx

  C#

  •1•0•1•1•Updated Oct 24, 2025Oct 24, 2025

• device.cameracontrollergen2

  Public
  This device contains the necessary circuitry to synchronously control 2 cameras

  camera-triggeringharp-techbonsai-rx

  C#

  •1•0•0•1•Updated Oct 24, 2025Oct 24, 2025

• device.inputexpander

  Public
  C#

  •1•0•1•1•Updated Oct 24, 2025Oct 24, 2025

• device.outputexpander

  Public
  digital-outputsharp-techbonsai-rx

  C#

  •1•0•0•1•Updated Oct 24, 2025Oct 24, 2025

• device.rfidreader

  Public
  RFID 125KHz reader.

  rfid-readerharp-techbonsai-rx

  C#

  •1•1•0•1•Updated Oct 24, 2025Oct 24, 2025

• device.soundcard

  Public
  High performance, low latency stereo sound card device

  soundcardharp-techbonsai-rx

  C

  •5•5•17•3•Updated Oct 23, 2025Oct 23, 2025

• core.atxmega

  Public
  Contains the implementation of Harp on the Atmel's ATxmega family of microcontrollers.

  C

  •3•1•0•0•Updated Oct 21, 2025Oct 21, 2025

• device.faststepper

  Public
  A fast moving stepper motor controller device, with acceleration, jerk control, and end stop support

  C#

  •2•0•0•1•Updated Aug 21, 2025Aug 21, 2025

• core.pico

  Public
  A Harp core implementation on the RP2040

  harp

  C++

  •

  MIT License

  •3•4•38•1•Updated Jul 23, 2025Jul 23, 2025

• harp-regulator

  Public
  Harp device enumerator and firmware upload tool

  C#

  •

  MIT License

  •1•0•7•0•Updated Jul 14, 2025Jul 14, 2025