Tacta

Hasan’s grandfather.

People in the UK who are deafblind

450,000

Estimated · Sense · 2022

Cane: Gets him to the stop, then leaves him there.
Guide dog: £102,000 over a working life, and can’t read a bus.
Communicator-guide: You book one in advance. The 07:42 won’t wait.

Guide Dogs · 2026

P1 BUZZER P2 RANGE P3 BUZZER P4 PDM MICROPHONE

Detection is when.

Tacta is what.

Bus to first signal

~1.4 s

Bus to first digit

~3.8 s

Estimated · latency budget

We have not validated this with DeafBlind users.

Distance Sensor

AX22-0015

Passive Buzzer

AX22-0018

Axiometa Genesis Mini with its four AX22 modules

Analog Microphone

AX22-0009

Passive Buzzer

AX22-0018

Hardware

Compute	Axiometa Genesis Mini (ESP32-S3)
Haptics	2 × passive buzzer, P1 / P3
Hearing	PDM microphone, I2S0
Ranging	VL53L0CX time-of-flight
I/O	4 × AX22 snap-in ports
Power	USB-C, ≥ 1 A

Stack

Vision	Modal · YOLO-World on T4
Reading	Claude · structured outputs
Relay	Vercel · Upstash Redis
Web app	Next.js 16 · getUserMedia
Firmware	Arduino-ESP32 · ESP-IDF 5 · FreeRTOS
Enclosure	build123d, parametric

Thank you.

Tacta is open source.

A wearable that turns the world around you into touch, for people who are DeafBlind. This is a hackathon prototype, opened up so it can grow into the real thing. Take it further.

Try the live demo View the code