Can these be flashed with ESP-Home or tasmota?

Hardware
21

Yeah… I guess so…
I’ll try with the one in my daughters room first since that switch is not needed.

Lets try with this and see what happens:

esphome:
  name: matilda-switch

esp8266:
  board: esp01_1m

# Enable logging
logger:

# Enable Home Assistant API
api:


ota:


wifi:


  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Matilda-Switch Fallback Hotspot"
    password: "foobar"

captive_portal:
    

binary_sensor:
  - platform: gpio
    pin: 12
    name: "Button"
    
    
switch:
  - platform: gpio
    pin: 4
    id: relay_2
    
  - platform: gpio
    pin: 14
    id: led2
    #internal: true
    #inverted: true
    name: "LED 2"
22

If you want to take longer then download esptool.py for windows install esptool and use

$ esptool.py read_flash
usage: esptool read_flash [-h] [--no-progress] address size filename

Will take a bit longer. At one time I had all tools to try and flash an ESP chip that turned out had RX and Tx not attached.

23

Can’t get it to work…
image

I’ll see what ESP-home flasher says…

image
image1117×384 15.3 KB

Anyone have an idea?

IMG_20220613_121743092
IMG_20220613_1217430921920×1440 285 KB

The loose wire is held on to GPIO0 when inserting the USB tool.
Fourth pin from the bottom on the same side as GND?

24

espalternative
espalternative880×701 372 KB

Could turn out it’s not an ESP.

25

Could be… But this is an old switch.
I have some memory of that chip as “new”.
These switches was bought “used” about 1.5 - 2 years ago, not sure if the previous owner even used them or just sold them because he didn’t understand them.

Would it talk to ESP-home flasher if it’s not an ESP?

26

I thought it was a good sign your serial picked up anything on the espflasher, but I suppose it’s based on an earlier serial program and the newer chips probably have been based on same older serial connection. replace newer tuya chip
If it just comes down to time and money buy new but this could be a great learning experience.
In my problem chip I tried even using a dedicated 3v power supply with short leads in case it wasn’t supplying enough voltage to flash. In the end I did replace the chip and it worked until I shorted the main board. Ends in disaster

27

I’ll probably try a replacement.
I don’t have a hot air gun, but lets see what I can do with just the iron.

Or is that too hard?

28

I removed mine with alot of flux and desoldering wire. It was not easy. If you damage any of the solder pads underneath then it’s likely game over. It’s all for the experience. Might be easier to cut the attachments off with tin snips. Old chip will be destroyed. Good luck with it. :+1:

29

Hmm…
Those hot air guns are expensive.
I wont have that much need for one of those to justify the price, what about using a hot air gun meant for removing paint?
Those are cheap, and within range in price. With a nozzle it’s probably doable?
Anyone tried it?

30

Alternatively, contact your local electronics user group.