Fake CR2450 Battery Holder - for Current Sensing
thingiverse
To gauge the current draw for my BLE sensor during its various operational modes - idle, sleep, and transmitting - I crafted a custom current sensor using an Arduino and INA219 current sensor. While the INA219 can't precisely measure the minute 2uA currents, it's perfect for most other purposes. For this project, I required a battery with exposed wires to connect with my battery holder, and this setup meets those needs admirably.
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