CagsCalcLabs CagsCalcLabs TI-84+ CE software with networking, security, and a little bit of bad judgment.

A network map of insanity

Making the TI-84+ CE Regret it's existence

CagsCalcLabs transforms graphing calculators into network-capable systems through TCP/IP stacks, open APIs, hosted services, and low-level development.

Explore Projects Open Services

Source device Everything here is organized around the constraint: small screen, limited hardware, real software.

Featured project

lwIP-CE with TLS

Lightweight TCP/IP stack for the TI-84+ CE with an integrated Ethernet driver derived from lwIP by nonGNU. Contains a TLS 1.3 implementation and a custom lightweight trust store.

Networking Cryptography Whitepaper GitHub

Development values

Portable, documented, open

Projects should be understandable, reproducible, and useful beyond one demo. That means release notes, source links, public discussion, and a bias toward code other people can actually build on.

4 entries Open source

Online services

Backends for tiny clients

Game services, hosted infrastructure, and project support systems for calculator software that needs something beyond the device. If you have a multiplayer game or a software mirror you need hosted, this is the solution for you.

Hosting Backends

Campaign

Save ASM

Low-level programming matters—it teaches the foundations of embedded systems and real-world computing.

Many modern calculator manufacturers, under bureaucratic pressure to prevent misuse, have abandoned this aspect of their platform in favor of senseless restrictions that do little to fix the underlying security flaws while simultaneously limiting what users can actually learn and build.

The campaign page explains why Assembly and C development are still essential for serious calculator work.

Right to tinker TI-84+ CE

My TI-84+ CE Projects

lwIP

Lightweight TCP/IP stack for the TI-84+ CE with an integrated Ethernet driver derived from lwIP by nonGNU. Contains a TLS 1.3 implementation and a custom lightweight trust store.

 CryptX

A full-function cryptographic library for the TI-84+ CE allowing developers to implement NIST standards for encryption into their programs.

 BlastFIS

Utility that validates hashes of programs, appvars and the operating system of the TI-84+ CE. Also checks the aforementioned for malware based on community-sourced malware definitions.

 Expanse

An MMO for the TI-84+ CE where players get to command their own starship and explore the cosmos, fight (or cooperate) with other players, complete missions, and more.