A simple app/hardware solution to send keystrokes from one computer to another over Bluetooth LE. No software required on recipient machine - AceCentre/RelayKeys

RelayKeys

by Ace Centre (Open Source)

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Professional guidance helps The software itself is free and open source, but achieving meaningful benefit requires sourcing and assembling compatible hardware, flashing firmware, and configuring software — tasks that go well beyond guided setup for most users. People using this alongside an eye-gaze or AAC system will almost certainly benefit from ATP involvement to integrate it properly. professional_recommended is appropriate because a determined technical user can succeed without a pro, but most AT users in the target population will need help.

Last verified June 20, 2026 · classified April 26, 2026

What it is

Summary

AI-generated from vendor-published content · April 26, 2026

RelayKeys turns a computer into a Bluetooth keyboard and mouse emulator, allowing keystrokes and pointer input from one device to be sent wirelessly to another — including phones, tablets, or secondary computers that wouldn't otherwise accept that input. It's designed primarily for people who rely on a dedicated AAC or eye-gaze system as their main computer but also need to control other devices like a work laptop, tablet, or phone without switching to a separate input method. You get the open-source software and hardware schematics, but you'll need compatible microcontroller hardware (such as an Adafruit Feather) and some technical setup to get it running. This is a DIY solution — if you're not comfortable with command-line tools and basic hardware assembly, expect a steep learning curve or plan to work with a technical support person.

Quick Facts Catalog facts · auto-generated
Age range
ComplexityProfessional guidance helps
Price
Funding
  • AT Act lending
  • Out of pocket
  • School district
  • Vocational rehab
VerifiedJune 20, 2026
ClassifiedApril 26, 2026 · confidence: high

What Setup Looks Like

  • With a guide
    1. Obtain compatible hardware (e.g., Adafruit Feather nRF52840 or similar Bluetooth LE microcontroller).
    2. Download and install the RelayKeys software from the GitHub repository onto the host (server) machine.
    3. Flash the firmware onto the hardware component following the Ace Centre documentation.
    4. Pair the hardware with the target device via Bluetooth and test keystroke relay — allow 1-3 hours for initial setup. See manufacturer support resources for detailed instructions.
  • With professional help
    1. An assistive technology professional (ATP) or technical support person familiar with AAC systems and Bluetooth HID can configure RelayKeys to work alongside an existing eye-gaze or AAC device.
    2. Integration with specialist AAC software (e.g., mapping relay commands to vocabulary pages) benefits from SLP and ATP collaboration — expect 2-4 sessions.

Getting it

Try Before You Buy

Devices like this are often available to borrow through your state's AT Act program — typically free or low-cost — so you can try it before buying or pursuing funding.

Where to Get It

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How to Fund This

Equipment like this is often pursued through official state programs. These are common starting points — each program decides its own eligibility and what it covers, so the first step is always a phone call.

All funding programs, state by state →

Sources & fine print

Vendor facts (name, price, platforms, vendor link) sourced from Ace Centre (Open Source)view on vendor site; last verified June 20, 2026.

Classification & description AI-generated from vendor-published content on April 26, 2026 · confidence: high. Vendor specs may lag; verify before relying on details in a clinical or funding artifact.