A handheld computer for high-precision measurement

The querdenker engineering team has just completed an exciting project: the development of a mobile handheld device for measurement technology. Handheld PCs are often used as PDAs, navigation systems, portable measuring instruments or GPS receivers. They are typically small and light, offer a wide range of functions and communicate wirelessly.

The device contains many new hardware and software components. It is built around the Raspberry Pi CM4 as system-on-module and a powerful battery pack, and it has a high-resolution 5-inch LCD with capacitive touch and gesture control. On the software side, the device is based on Buildroot and contains Linux core drivers developed specifically for it.

The handheld PC we developed consists of the following hardware and software components:

Hardware

• Raspberry Pi CM4 as SOM
• battery operation with a 2S1P lithium-ion battery pack
• 5-inch LCD with 480 x 320 resolution
• capacitive touch and gesture control
• USB OTG
• customer-specific analogue signal evaluation and digitisation
• nine-key membrane keypad

Software

• Buildroot as the base
• Linux core driver development
• customer-specific application and interfaces

We are proud to have developed a powerful handheld device for a demanding client, and we look forward to more challenging projects.

Would you like to work with us? Get in touch:

Phone: +49 (0)7807 / 890 80 0 Email: info@querdenkerengineering.de