QWERTY handset with wifi module and epaper display
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Updated
Mar 7, 2017 - KiCad Layout
QWERTY handset with wifi module and epaper display
Self-powered directional light sensor for solar arrays. 80 phototransistors on a 100mm sphere measure the brightest sky direction via weighted centroid algorithm. ESP32 + 4G MQTT. BOM ~$50.自供电光伏阵列定向光传感器。100mm球体表面80个光电晶体管,通过加权质心算法测量天空最亮方向,4G MQTT传输方向向量。BOM约¥372。
Open Backcountry - An open source handheld device for the backcountry athlete, outdoor enthusiast, or off-grid communicator!
Screen driver for the SHARP memory display, with extremely light weight graphics library
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