Ongoingvario-first-pcb
STDvario-first-pcb
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Mode:Schematic/Simulation
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：Public Domain
Creation time:2025-12-22 09:54:12Update time:2025-12-25 02:36:24
Description
Making variometer. has screen, BLE transmission, low power. Uses nrf52 on xiao board, lsm6ds3, bmp581, qmc6309 for imu + baro. uses dc-dc step up and op amp to drive a piezo buzzer.
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