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An open source LTE modem MSP430 controller

Open-source LTE plug-in board powered by the TI MSP430F5529, a low-power solution for IoT and remote monitoring applications

romanRoman
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  • Cell430
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ongoing project

This project was created on 01/02/2026 and last updated 3 months ago.

Description

Cell430 (GitHub URL: https://github.com/attacker145/IoT-dev) is an open-source LTE modem plug-in board built around a TI MSP430F5529, designed for low-power IoT, remote monitoring, and industrial embedded systems that require reliable cellular connectivity.
The board features a plug-in LTE modem interface designed for Airgain LTE modules, giving the MSP430 direct control over modem power sequencing, reset, and communication. This allows the board to operate either as a standalone LTE node or as a cellular interface for an external host processor.
The project is currently under active development, with hardware bring-up and initial modem integration in progress. Schematics, PCB layout, and firmware are being published on GitHub as the design evolves, to deliver a practical, engineer-focused LTE building block rather than a one-off prototype.

Files

Cell430.pdf

Adobe Portable Document Format - 2.08 MB - 01/05/2026 at 19:36

Preview

LTE-To-Serial-Adapter.PcbDoc

pcbdoc - 6.09 MB - 01/05/2026 at 19:32

Download

LTE_MCU_Rev01.SchDoc

schdoc - 403.50 kB - 01/05/2026 at 19:32

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LTE_UART_USB_adapter.SchDoc

schdoc - 203.50 kB - 01/05/2026 at 19:32

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LTE_power_Rev01.SchDoc

schdoc - 355.50 kB - 01/05/2026 at 19:32

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View all 8 files

Project Logs
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  • Buck Controller Recommendation: Is TPS5430DDA Suitable for 9–24 Vin → 9 Vout?

    Roman • 01/04/2026 at 19:25 • 0 comments

    I am currently working on the power stage section of the project. I need to select a step-down (buck) controller IC that can efficiently convert an input voltage range of 9–24 V down to approximately 9 V at the output. I am considering TPS5430DDA.

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