Bilateral stimulation, built in the open.

Two wireless tapper pods and a light bar, controlled from any phone. No app, no account, no $800 device. For use in EMDR sessions under the guidance of a trained therapist.

Join the waitlist Build it yourself

Designed with therapists, built in the open.

Two 3D-printed EMDR tapper pods side by side — 3D-printed prototype render — iteration 1

How it works

1

Power the pods

Plug both pods into any USB-C charger or power bank.

2

Join the Wi-Fi

Your phone joins the kit’s own network "EMDR-Controller" and opens 192.168.4.1 — no app store, works on iPhone, Android, laptop.

3

Tap START

Pods pulse alternately left and right; the light bar sweeps a dot in sync.

Telehealth mode: the therapist drives, the client holds the brake.

1 · Client gets a code

Client phone showing a 6-digit pairing code

The client taps “Get pairing code” and reads the 6 digits to the therapist.

2 · Therapist enters it

Therapist web page with a pairing code field

The therapist enters the code on a web page and gets the same controls.

3 · Session runs — client can stop anytime

STOP on the client’s phone always wins and ends the remote session.

Codes last 10 minutes and are single-use

A session lasts 2 hours

Only device settings cross the internet — no names, no notes, no health data

Works over the client’s home Wi-Fi; nothing to install

Every setting, on the phone already in your pocket.

Phone control page with a running session

Speed: 0.2 – 2.0 Hz
Vibration strength: 0 – 100 %
Pulse length: 50 – 400 ms
Light brightness: Adjustable
Session timer: Auto-stop
Outputs: Tappers / Light bar / Pod lights, independently

Six light colours

Blue
Cyan
Green
Amber
Red
White

Open hardware. No soldering.

Exploded view of a pod showing the lid and the base shell

3D-printed shells

Pods are 118 × 46 × 38 mm in PLA. They print flat, with no supports.

Off-the-shelf parts

ESP32, motor driver, coreless vibration motor, USB-C. Roughly $60–80 in parts for the full kit including the light bar, and every part is a standard Amazon or AliExpress item.

Solderless

Screw terminals and plug-in jumper wires throughout.

Desk dockTwo-pod stand, pods sit tilted, cables out the back.

Light bar60 addressable LEDs, 1 m, mounts on a standard tripod.

Light-bar controller boxStraps to the tripod leg.

Firmware and CAD are open (Arduino + OpenSCAD). One firmware for all units; role chosen at first boot.

Get the files

In the room and between sessions.

In session

Reliable bilateral stimulation, in person or over video.
Speed, strength and pulse length adjustable live.
Session timer with auto-stop.

Between sessions

Clients can use the kit at home as recommended by their therapist.
Nothing to install.
No account.

Client autonomy and privacy

The client always holds the STOP. Nothing but device settings ever leaves the home. There are no accounts and no data collection.

Join the waitlist

Kit

Coming

Parts plus printed shells — everything in the box.

Files only