USB Power Meter
USB power meter based on ESP32-U4WDH
The main control is ESP32-U4WDH, pay attention to the model!
Support USB3.x gen1 transmission
Maximum 10A current (30 degree temperature rise)
Power supply range: 4.5v - 40v
Maximum measuring voltage: 36V
Screen: st7735 80*160
Screen refresh rate: ~50fps (20ms-22ms)
Data acquisition: averaged at a speed of 50hz, displayed after first-order low-pass filtering
Time: Display is accurate to 1ms, storage/calculation precision is 1ns, 64-bit unsigned integer, how much time can be calculated by yourself
Power: display accuracy 0.01mWh, maximum 999999.99mWh
Since 2.4Ghz and 2.5Ghz of USB3 are very easy to interfere, this version cuts off the RF circuit
One side will have a power consumption of 0.23W when there is no load. It is recommended that this side be used to measure the discharge of the power bank
USB Power Meter
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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