Uploaded July 2023 | Updated September 2026, 11 hours ago

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In this video, I show you my new device which is a DC power meter. This specific power meter is capable of measuring up to 85 V thanks to the INA238 chip and up to 15 A (20 A for shorter periods) thanks to the unique 2 milliOhm, 5 W current sensing shunt resistor.

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Affiliate links:
ATtiny85 microcontroller: https://s.click.aliexpress.com/e/_ADV8q7
1.3” OLED Display: https://s.click.aliexpress.com/e/_DC2QisF
Large LCD module: https://s.click.aliexpress.com/e/_DlxEiDz
4 mm binding post terminals: https://s.click.aliexpress.com/e/_o2dPDMb
UNI-T UT61E Multimeter: https://s.click.aliexpress.com/e/_AfAhM2

Extra resources on my webpage:
https://curiousscientist.tech/blog/20a-85v-dc-power-meter

Get this PCB from PCBWay:
pcbway.com/project/shareproject/Custom_made_self_contained_DC_power_meter_4c51ce95.html

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https://curiousscientist.tech/tools