Tag Archives: Arm cortex


Portable GPS logger for runners

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Daniel’s portable GPS logger is a university-funded project and is geared towards runners to record their movement. The core hardware of the project mainly consists of an LPC1778 Cortex M3 microcontroller, an Adafruit Ultimate GPS module, and a Newhaven Display 2.4″ ILI9340 QVGA LCD, which are all powered by a 500 mAh Lithium Ion battery.The GPS logger circuit also contains an on-board batter charger circuit using Microchip MCP73831T IC. It displays the current distance traveled and the time taken to travel the distance. The maps are generated from TileMill using a custom color scheme and OpenStreetMap data, and are stored in a microSD card.

The electrical hardware design (schematic/layout) and software for this GPS logger can be downloaded from GitHub.

Portable GPS logger for runners

Portable GPS logger for runners

[Via Hackaday]

F*watch: A fully open electronic watch project featuring multiple sensors

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This fully-open digital wrist watch is designed by a group of employees at CERN as a special present for one of their retiring colleagues who likes hiking and timing. The watch features multiple sensor units including GPS, pressure sensor, 3D-accelerometer, compass, and ambient light sensor. A 128×128 pixels LCD with backlight feature is used for front display. The watch also provides a MicroSD card slot for storage. Powered by a 500 mAh Lithium-ion battery, the project uses Silicon Labs’ EFM32 Giant Gecko ARM® Cortex®-M3 based 32-bit microcontroller as its brain.

F*watch: Open-source wrist watch

F*watch: Open-source wrist watch

[via: HackAday]