SmartPlug with POW (AISIRER, AVATAR) - stodev-com-br/Tasmota GitHub Wiki
Smart Plugs from Amazon with same internal parts:
Device:
- solid design with 16A Relays
- 8 MB memory chip
- 2 LEDs
- POW function (unfortunately did not test yet, need help)
- very small size, easy to disassemble
- no need to disassemble PCBs
- test mode works with 5 or 3.3 V (relays also works)
Disassemble
- take off the lead with 2 screws
- put small cross screwdriver inside 220V plug connector, there are 2 screws
- free the antenna from plastic (no need to disconnect)
- pull of PCB from the case
Important build flags.
- in Platformio for Tasmota flag change from 1MB to 8MB is needed, otherwise flash fails. build_flags = ${esp82xx_defaults.build_flags} -Wl,-Teagle.flash.8m.ld
- in Arduino IDE: board selected - "Node MCU 1.0", standard
Found how some of PINS are linked to main PCB and are easy to connect for flashing
Flashing:
I've decided to use 5V - there is a painted pad on the PCB, clean it and attach 5V (see image)
- Connect GPIO0 to GND
- Connect RX, TX
- Connect 5V and GND
- Connect USB to PC, start flashing
Tasmota WEB config (Generic)
- GPIO0 - Led1i
- GPIO2 - Led2i
- GPIO5 - HLW8012 CF
- GPIO12 - HLWBLSELi
- GPIO13 - Button1
- GPIO14 - HLWBL CF1
- GPIO15- Relais1
IMPORTANT: in order to have an accurate measurement of Voltage/Current/Power, you have to calibrate the internal meter with a well know load (like lamp or hair dryer) using this detailed procedure.
Update from my side
I managed to flash two Aisirer plugs using pre-compiled tasmota.binaries, since my plugs had only 1M flash. I used 3.3V connected directly to the ESP board. I had some trouble with WLAN connectivity which caused the relays to pulse, so I switched to 2.3.0 core, which seems default again since a few releases. This runs quite well. Configure as BlitzWolf SHP(45) Module and also the power measurement is working.
Update from nos86
I have updated the guide in order to interface Tasmota with the power meter inside smart plug (tested only on AISIRER) and added the link for the power monitoring calibration