M5Stack Atom Lite ESP32 and RC522 RFID

ESPHome
1

Hello

First post in Home Assistant. I am a newbie to HA but have been autoating my house with Digitalstrom and now yearning to swap over.

I have successfully got my Switchbot curtians to work using a ESP32 and love it.

I now want to be able to scan RFID Tags and have bought a couple of ESP32 boards and a RFID reader. With ESPHOME I have created this:

esphome:
  name: rfid-one

esp32:
  board: m5stack-core-esp32
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:
  password: "4cfb6aad255fc9ebe69c9d0040fa82f1"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Rfid-One Fallback Hotspot"
    password: "vqygAzx0n2j3"

captive_portal:

## Device-specific

i2c:
  sda: 26
  scl: 32
  scan: true

rc522_i2c:
  # ...
  on_tag:
    then:
      - homeassistant.tag_scanned: !lambda 'return x;'

light:
  - platform: fastled_clockless
    chipset: WS2812B
    pin: 27
    num_leds: 1
    rgb_order: GRB
    id: status_led
    name: ${friendly_name} Light
    effects:
      - random:
      - flicker:
      - addressable_rainbow:
      
      
binary_sensor:
  - platform: gpio
    pin:
      number: 39
      inverted: true
    name: ${friendly_name} Button
    on_press:
      then:
        - light.toggle: status_led

I get the error:

Communication with the MFRC522 might be down, reset in -58

I just can’t wrap my head around it. I have lots of experience getting things to work but no with ESP32’s. Any help would be wonderful!
Thank you!!

2
3

After days of trying and eventually writing a post here I got it to work minutes later. I needed to define: address 0x28

So my config is now as such:

esphome:
  name: rfid-one

esp32:
  board: m5stack-core-esp32
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:
  password: "4cfb6aad255fc9ebe69c9d0040fa82f1"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Rfid-One Fallback Hotspot"
    password: "vqygAzx0n2j3"

captive_portal:

## Device-specific

i2c:
  sda: 26
  scl: 32
  scan: true

rc522_i2c:
  # ...
  address: 0x28
  on_tag:
    then:
      - homeassistant.tag_scanned: !lambda 'return x;'

light:
  - platform: fastled_clockless
    chipset: WS2812B
    pin: 27
    num_leds: 1
    rgb_order: GRB
    id: status_led
    name: ${friendly_name} Light
    effects:
      - random:
      - flicker:
      - addressable_rainbow:
      
      
binary_sensor:
  - platform: gpio
    pin:
      number: 39
      inverted: true
    name: ${friendly_name} Button
    on_press:
      then:
        - light.toggle: status_led
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