GhostCalc"Ordered the basic TI-84 GhostCalc, works great, and the setup walkthrough made it easy."
GhostCalc tucks a full AI — chat, a step-by-step solver, smart notes and camera vision — invisibly inside your TI-84. No computer. No cables. Nobody can tell.
GhostCalc looks and feels exactly like the calculator you already know — until you ask it something.
Type a question on the TI-84, send it over the built-in Wi-Fi bridge, and read a clean answer back on the LCD. Powered by GPT-5.5 with smart routing — quick questions stay fast, hard ones get the deep model.
The 5MP Vision build adds an onboard camera that captures the calculator screen, your notes, or a diagram — so the AI answers your exact problem, with the full visual context.
The ESP32-S3, firmware, power tap and link-port interface are built into the original TI-84 shell. From the outside it's the same calculator — same weight, same buttons, same look.
Type your question straight on the TI-84 keypad, or snap the screen with the camera on the 5MP Vision build.
The hidden ESP32-S3 sends it over Wi-Fi to GPT-5.5 and streams the reply back through the link port.
A clean, readable answer appears on the LCD — or a full program is injected, ready to run.
Actual device photo
This is the actual on-device menu customers use after the build is installed. No laptop window, no external display, no extra box — just the calculator screen.
Every GhostCalc is hand-assembled and bench-tested before it ships.
A tighter review section built around real-use notes: setup help, quick delivery, and the calculator doing what it is supposed to do.
"Ordered the basic TI-84 GhostCalc, works great, and the setup walkthrough made it easy."
"Customer support was handled almost instantly when I needed help with my order."
"Bought the firmware and got it sent over fast. The process was simple."
"It works exactly as advertised. The calculator feels normal until the AI menu opens."
Buy a ready-made unit, choose Modify Mine at checkout to send your own TI-84 Plus for $50 off, preorder 5MP, or grab the DIY PCB board and build your own.
Prices in USD · Use code GHOST10 for 10% off item subtotal · Secure Stripe checkout · Cards + eligible stablecoin crypto · Worldwide shipping
Join thousands of students already using GhostCalc to study smarter — without anyone noticing.
For setup, order status, firmware notes, or custom build questions, this is the fastest way to reach the GhostCalc side of the workshop.
Talk with the builder, get setup help, and follow updates as new firmware rolls out.
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