Just #disassembled a #smarthome #tasmota #smartplug, the Refoss P11. I bought 4 for ~43€ incl. shipping. Thats ~11€ shipped per unit for a factory flashed Tasmota device with power measurement and switching capability.

Protective earth is connected with AWG24 =~0,205mm², but resistance is low/ok. The input pins are directly soldered to the PCB.

Temperature sensor and power meter need to be manually calibrated to show reasonable values. ESP module pinout: search for tywe2s / esp-02s.

Lots of vias in the traces that carry mains voltage/current.
The input MOV got VDE printed on it. Capacitors are SAX branded. Relais is wrg rj-ss-105dm63-f, which got a datasheet with reasonable content. Contact spec in the datasheet lists 10A resistive, not 16A as printed on the relais/device.

#electricians #electronics #electronicengineer is 0,205mm² ok for protective earth connection?

Perché sbrogliare le schede eletttoniche è un’arte e il nostro Lorenzo Baglioni ce lo dimostra!

#electronic #electronicengineer https://www.tiktok.com/@wearedeveler/video/7293096102436277537

Perché sbrogliare le schede eletttoniche è un’arte e il nostro Lorenzo Baglioni ce lo dimostra!

#electronic #electronicengineer
https://www.instagram.com/reel/CydHOgKL3CU/?igshid=MzRlODBiNWFlZA==

With the sudden influx of new users, time for another #introduction.

I'm an azure-winged magpie living in #China doing #embedded software development for #PublicGrid monitoring and testing tools. Unlike most of my #ElectronicEngineer colleagues, I am a 100% #software nerd with just enough #hardware smarts to be dangerous. I design embedded #frameworks and #libraries that my colleagues lack the foundations to do create. I chiefly work with the #STM32 line of #MCUs.

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