Tested ESP8266 with RC522 NFC/RFID Reader

RC522 is NFC/RFID reader, and it can be integrated into ESPHOME

• esphome configuration

  yaml

  # Example configuration entry
  http_request:
  
  output:
  - platform: esp8266_pwm
    pin: 5
    id: my_buzzer
  
  rtttl:
    output: my_buzzer
    gain: 0.1
  
  spi:
    clk_pin: 14
    mosi_pin: 13
    miso_pin: 12
  
  rc522_spi:
    cs_pin: 15
    on_tag:
      then:
        - http_request.send:
            method: POST
            url: !secret nfc_tag_call_url
            verify_ssl: false
            headers:
              Content-Type: application/json
            json:
              tag: !lambda
                return x;
        - rtttl.play:
            # rtttl: 'siren:d=8,o=5,b=100:d,e,d,e,d,e,d,e'
            rtttl: 'two_short:d=4,o=5,b=100:16e6,16e6'
  
  binary_sensor:
    - platform: rc522
      uid: !secret my_room_card
      name: "My Room Card"

• Two separate function

Beelink Mini S

I wasn’t satisfied by Pico PC so,

I bought another mini PC. the Beelink Mini S

Here are some specs.

• CPU : Intel N95
• Memory : 8GB
• SSD : 256GB
• Display Output : HDMI x 2
• USB : USB-A x 4
• Ethernet : 1 GbE x 1
• Wifi : Wifi 5

Better than Pico PC

• Silent : most important Pico PC doesn’t include PWM controlled FAN. (what I mostly disappointed about Pico PC)
• Slightly faster. N95 is slightly faster than J series

Weaknesses?

ESP8266 + IR Receiver + IR Transmitter

When I was using raspberry pi, I bought a IR transceiver module for Arduino. and used it for several years. IR transceiver

And this year, I am interested in ESP8266, so I bought another IR receiver, IR transmitter.

Installed.

Install esp8266 and voltage converter on breadboard.

Install IR receiver and IR transmitter in front of tv

My Raspberry Pi 1

• Bought : ₩58,000 2013/04/24

  • with : PiFace, BOARD, I/O EXPANSION, RASPBERRY-PI (₩48,570)

• At First : install raspbian. tested relay, and tested led on PiFace

• As a IR Remote controller : telegram-bot-try2, 2019 May IoT project

• As a Thermal sensor : finally just read DHT11 temperature/humidity and send it to the server.

  bash

  #!/bin/bash
  
  export API_URL=https://public-api.dgkim.net
  export API_KEY=----
  
  export DHT11=/home/pi/git/rpi_sensor/src/test_dht11
  
  export HUMI_TEMP=$($DHT11 | tail -1)
  
  HUMI=$(echo $HUMI_TEMP | tr "," "\n" | head -1)
  TEMP=$(echo $HUMI_TEMP | tr "," "\n" | tail -1)
  
  TIMESTAMP=$(date +"%Y-%m-%dT%H:%M:%S%z")
  
  echo "HUMI $HUMI"
  echo "TEMP $TEMP"
  
  
  curl -X POST "$API_URL/v1/temperatures/" \
  -H 'Content-Type: application/json' \
  -H "X-API-KEY: $API_KEY" \
  -d"
  {
    \"temperature\": $TEMP
  }
  "

• Today : Turn it off.. and remove SD Card from it. Please Rest in Peace my raspberry pi.

Story

I wanted to implement automatic LED light, when I approach kitchen.

Prepare

• ESP8266 compatible board. (I use ESP01 board this time)
• WS2812B LED Strip (5v addressable LED)
• HC-SR501 PIR Sensor (body detection sensor)

Wiring

• WS2812B

  • vcc : to USB 5v positive pin
  • gnd : to USB ground pin
  • data : to GPIO1 of ESP01

• HC-SR501

  • vcc : to USB 5v positive or 3.3v
  • gnd : to USB ground pin
  • data : to GPIO0 of ESP01

Result

ESPHOME + Relay + FAN

ESP8266 PCB

ESPHOME

esphome:
  name: six

esp8266:
  board: d1_mini

# Enable logging
logger:

# Enable Home Assistant API
api:
  password: ""

ota:
  password: ""

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

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: !secret wifi_fb_ssid
    password: !secret wifi_fb_password

captive_portal:
    
# Example configuration entry
switch:
  - platform: gpio
    pin: GPIO4
    name: "Switch2"
    inverted: true
  - platform: gpio
    pin: GPIO5
    name: "Switch3"
    inverted: true
  - platform: gpio
    pin: GPIO12
    name: "Switch4"
    inverted: true
  - platform: gpio
    pin: GPIO13
    name: "Switch5"
    inverted: true
  - platform: gpio
    pin: GPIO14
    name: "Switch6"
    inverted: true

Home Assistant automation

• Turn on when RPi4’s temperature is above 58

alias: rpi4-cooling
description: ""
trigger:
  - platform: numeric_state
    entity_id: sensor.rpi4_temperature
    above: 58
condition: []
action:
  - type: turn_on
    device_id: 98f3c834a50732c3b8981d0d5925158a
    entity_id: 186a943f4f7f486e95ce2bb1c6751a7f
    domain: switch
mode: single

• Turn off when RPi4’s temperature is below 50

alias: rpi4-cooling-stop
description: ""
trigger:
  - platform: numeric_state
    entity_id: sensor.rpi4_temperature
    below: 50
condition: []
action:
  - type: turn_off
    device_id: 98f3c834a50732c3b8981d0d5925158a
    entity_id: 186a943f4f7f486e95ce2bb1c6751a7f
    domain: switch
mode: single