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Pui Ching Graffiti Electricity Meter - Three-way

Overview

This project

introduces a three-way WiFi power meter built using a 17H65 BLE chip, Tuya WBR3, and Peizheng power module.

Through configuration, it can monitor home electricity usage in real time

and set alarm power levels.

It also monitors three power sources simultaneously. **

Note:** This project involves high-voltage electricity; please exercise caution. The project owner is not responsible for any consequences arising from its use. Open
source link
- Software open source link
. All materials,
code, and project configurations are attached.

Configure the Tuya platform product key in the protocol.h file to use

the Tuya platform. Configure

data points. Configure
Tuya data points.

Configure the Studio panel. Configure

the hardware
casing. **

PS:** Why is it a four-layer board? Because the PCB exceeds 10cm. [dog emoji]

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

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:2026-03-27 02:31:46

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