config analog input for 4-20mA device in ESPHome

config analog input for 4-20mA device in ESPHome - Printable Version

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+--- Thread: config analog input for 4-20mA device in ESPHome (/showthread.php?tid=2068)

config analog input for 4-20mA device in ESPHome - admin - 07-28-2022

actually esp32 will convert current signal to voltage from sensor. we have tested KC868-A4 board with current source, here are some photos from board and esphome log output:

Filename: a4-4mA.jpg Size: 320.63 KB 07-28-2022, 07:27 AM

Filename: 4mA.png Size: 8.27 KB 07-28-2022, 07:27 AM

Filename: a4-10mA.jpg Size: 337.35 KB 07-28-2022, 07:27 AM

Filename: 10mA.png Size: 8.14 KB 07-28-2022, 07:28 AM

here is ESPHome config file for KC868-A4 analog input:

esphome:
name: a4

esp32:
board: esp32dev
framework:
type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:
password: "cde668a4953338ac5140f1585c9d5150"

wifi:
ssid: "KinCony"
password: "123456"

# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "A4 Fallback Hotspot"
password: "ZvKhDPUYilHj"

captive_portal:

sensor:
- platform: adc
pin: 34
name: "ADC-IN"
update_interval: 5s