Calcade store

Calcade · plug-on modules for the TI-84 Plus CE

Turn your calculator into a tiny internet device.

AI chat on any Wi-Fi or a phone hotspot. Games and web pages streamed from your own computer at home. One small module on the calculator you already own, built and tested by hand.

Try it right hereSee the models
First units in a few weeks30-day refund or swapUSA only
A TI-84 Plus CE showing a game streamed over Wi-Fi from a computer
Real photo · from the video

Try it

Press the keys. It works.

This is the home screen the module adds to your calculator, running right here in your browser.

  1. Arrows move between apps, enter opens one, clear goes back. Your keyboard works too.
  2. Open AI Chat and ask something, or tap a question below.
  3. Open Math and solve a quadratic or check a triangle.
  4. Press clear on the home screen for the normal calculator; apps brings the home screen back.

Ask the AI

A copy that runs in your browser. Games, web and the camera need the real module, so in the copy those apps show what they do.

The launch line-up

Four models. Same calculator.

Every model runs AI chat and the home screen on calculator power. Pick how small, and whether you want sound or a camera.

Stick

$29

The smallest way in.

Photo coming
  • Tiny plug-in on the port, no case on the back
  • AI chat + home screen
  • Games and web from your computer
In the box
The Stick, quick-start card with your activation code
You need
A TI-84 Plus CE, Wi-Fi or a phone hotspot

Launch model

Details → Join the waitlist

Mini

$39

Replaces the battery door.

A printed module with the Wi-Fi board on the back of a TI-84 Plus CE (prototype)
  • Slim module in place of the battery door
  • AI chat + home screen
  • Games and web from your computer
In the box
The Mini, short cable + adapter, quick-start card with your activation code, stickers
You need
A TI-84 Plus CE, Wi-Fi or a phone hotspot

Launch model · start here

Details → Join the waitlist

Sound

$69

Everything in Mini, out loud.

Photo coming
  • Small speaker out the back
  • Headphone jack, switchable
  • Game and video sound, music player
In the box
The Sound module, short cable + adapter, quick-start card with your activation code
You need
A TI-84 Plus CE, Wi-Fi or a phone hotspot

Planned launch model · in testing

Details → Join the waitlist

Camera S

$99

Point it, ask the AI.

Photo coming
  • Lens out the back
  • Send a photo straight to the AI
  • Live viewfinder + photos
In the box
The Camera Small module, short cable + adapter, quick-start card with your activation code
You need
A TI-84 Plus CE, Wi-Fi or a phone hotspot

Planned launch model · in testing

Details → Join the waitlist

Not for tests or exams. Take it off before any test, like any other gadget.

Coming later

More on the way.

Voice$79

Talk to the AI with a microphone.

Camera Band$119

A bigger camera on the cover rails, memory card slot.

Everything$149

Camera, sound and mic in one, with its own battery.

Pro$179

A custom all-in-one board, with its own battery.

Insideabout $299

A whole TI-84 Plus CE with the module fully inside.

Accessoriessmall

Case colours, memory card add-on, spare cables.

How it works

Ten minutes to set up. Then it just works.

01

Plug it on

The module fits your own TI-84 Plus CE and runs on the calculator's power. No soldering, nothing opened.

02

Send the apps once

It arrives ready. You send the calculator apps once with TI's free TI Connect CE software, about 10 minutes with the guide.

03

AI anywhere

AI chat works on any Wi-Fi, including your phone's hotspot. Questions included to start, then a small monthly plan.

04

Games and web from home

A free app on your own computer at home streams games and web pages to the calculator, at about 5 pictures a second.

You need

  • Your own TI-84 Plus CE (the CE Python works too)
  • Wi-Fi or a phone hotspot for the AI
  • A computer once, for the 10-minute setup

For games and web

  • Your own computer at home, with the free streaming app running
  • Not included: the calculator, games or accounts

Rather build it yourself?

The source code is public.

The source code and a write-up of how I built the first one are public on GitHub if you want to build your own. It needs compiling. The modules are for people who want it finished, tested and ready.

Source code on GitHub

The promise

Made by one person. Backed like a real store.

30-day refund or swap

Not happy? Send it back within 30 days for your money back or a different model.

Every unit tested

I test each module on a real calculator before it ships.

Help on Discord

Questions and setup help in the Discord server.

Nothing kept

Your questions and photos go to the AI and are not stored. The server only counts how many questions each unit asks.

USA only, for now

Shipping inside the United States to start.

Waitlist first

Join free. When units are built and tested, people on the list get an invite to buy, in sign-up order.