UK8sz

Voltmeter and Ammeter

Overview

1. Finished effect

2. Screen source:
[Taobao] Limited-time Taobao Gold Coin discount of 0.1 yuan https://m.tb.cn/h.gNGw9DqaGE9qrzp?tk=6lRC3fE3FIZ HU0854 "2.4-inch TFT LCD screen SPI serial port color ST7789ILI9341 4IO port driver" Click the link to open directly or search on Taobao to open directly

3. According to the steps,
the LCD screen needs to install four copper pillars. Due to budget constraints, copper pillars are not installed in the picture.

Currently, the hardware supports measuring DC and AC voltage and automatic range switching, but the software does not support AC measurement and range switching.

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2026-03-26 13:35:52

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