Just launched on Crowd Supply by Stuttgart-based Unsurv Technologies, the unsurv offline board is a lightweight, privacy-focused device that features an ESP32-PICO-D4 MCU, a u-blox CAM-M8C GNSS receiver, and a Texas Instruments RF430CL330 NFC interface.
Measuring 43 mm x 32 mm, the board utilizes OpenStreetMap data on an SD card along with an Android app. This enables users to collect GNSS data, analyze it, and improve the open source design to suit their needs. The unsurv offline board can also have various tracking applications.
Users can access their unsurv data via their smartphone and the NFC tag implemented in the case. What's more, the tiny Bosch BMA400 accelerometer reduces battery capacity loss through its power-saving features. Tap and double tap recognition allow it to be adapted as an input device. A user can attach a LiPo battery or connect a USB power bank to the unsurv board whenever they’re ready to get started. At the end of the day, most unnoticed GNSS are added onto the unsurv offline board.
Unsurv offline can log how many surveillance cameras have tracked a user throughout the day as well. It even performs location logging, automated commute tracking, and Wi-Fi signal strength mapping. This allows a user to record their biking commute without anyone else viewing that data. Additionally, owners can map Wi-Fi signal strength in their city and build a map of free Wi-Fi access points. Unsurv offline provides users with the ability to monitor their vehicle’s total mileage so they can claim tax benefits.
Anyone interested in the unsurv offline can back it on Crowd Supply for $89, and view its process and hardware design on GitHub. Unsurv Technologies also plan on making the Android app, firmware for their case, and other common uses available to the public soon.