Point the built-in camera at a problem. Bring equations, handwritten notes, and diagrams into the conversation, right on your TI-84.
Choose your build. Send in your TI-84 Plus with Modify Mine for $50 off, or build your own with the DIY PCB. Building it yourself? See the tools you'll need →
Choose 5MP Vision, then select Modify Mine in checkout. That takes $50 off the build. Standard is currently sold out.
Use the Shipping Instructions page and include your checkout email inside the package.
Modify Mine includes return shipping after the install. DIY PCB orders use normal shipping rates.
Send a photo of the calculator model before ordering and the build can be checked first.
Free 1-year hardware warranty · Hand-built in Queens, NY
Prices in USD · Secure Stripe checkout · Cards + eligible stablecoin crypto · Worldwide shipping
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Your next idea, question, or project. Right on your TI-84.
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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