Hi, 

I once found on github information on how to connect a LilyGO / T-CAN485 device with DEYE. Unfortunately, I can't figure out how to do it. I changed GPIO to 21 and 22 but it still doesn't connect. Is there something else I should change in the code? 

Thanks for your reply!

 

I managed to solve the problem. You should add 5V power supply to the rs485 chip to the code. 

output:
  - platform: gpio
    id: ENABLE_PIN # Enable the chip
    pin:
      number: GPIO19
      inverted: true
  - platform: gpio
    id: SE_PIN # Enable autodirection
    pin:
      number: GPIO17
      inverted: true
  - platform: gpio
    id: ENABLE_5V_PIN # Enable 5V pin for RS485 chip
    pin:
      number: GPIO16
      inverted: true

uart:
  id: mod_bus
  rx_pin: GPIO21
  tx_pin: GPIO22
  baud_rate: 9600
  stop_bits: 1

 

On 2023/10/09 at 1:28 PM, Dariusz said:

 

I managed to solve the problem. You should add 5V power supply to the rs485 chip to the code. 

output:
  - platform: gpio
    id: ENABLE_PIN # Enable the chip
    pin:
      number: GPIO19
      inverted: true
  - platform: gpio
    id: SE_PIN # Enable autodirection
    pin:
      number: GPIO17
      inverted: true
  - platform: gpio
    id: ENABLE_5V_PIN # Enable 5V pin for RS485 chip
    pin:
      number: GPIO16
      inverted: true

uart:
  id: mod_bus
  rx_pin: GPIO21
  tx_pin: GPIO22
  baud_rate: 9600
  stop_bits: 1

 

hi @Dariusz

i am in the same situation as you in my case i have a deye 8k that i would connect via can and then a bms jk that manages some 16s x 304ah cells. 
have you been able to connect it at this moment with a bms or how do you use the lilygo ?

 

Yes, everything works. I have a connection to the inverter and to the battery (BMS SEPLOS)

Edited January 16, 20242 yr by Dariusz