About Altware Development LLC

My name is Matt Calhoun, and Altware Development LLC is a privately held company I started during the development of ChatterBox.

I’ve been a software developer at large and small companies since around 1999, as well as some solo software projects before that (and after).

In addition to adding features to ChatterBox as I have time, I am currently doing cloud development in a consulting role, and am occasionally open to new consulting opportunities.

  • Embedded Development

    I have extensive experience in designing efficient and maintainable firmware and integrating a variety of components using SPI, IIC, CAN, UART, BLE, and more.

    I have built solutions on ESP32, SAMD21/51, and more. Linux, RTOS, No OS, no problem.

  • Embedded UI Design

    Designing an effective and intuitive UI that performs well and looks clean on a small touchscreen or LED display is a unique challenge.

    Take a look at ChatterBox for a sample of my work.

    I can work with LVGL, GFX, or anything else.

  • secure Off-Grid Comms

    I have developed the off-grid secure communication protocol and firmware known as ChatterBox.

    ChatterBox uses LoRa frequencies, advanced mesh techniques, asymmetric encryption, frequency hopping, and digital signatures.

    Learn More