GPIO Pinout
| Pin | Function |
|---|
| GPIO4 | IIC_SDA |
| GPIO5 | IIC_SCL |
| GPIO14 | 1-Wire GPIO |
| GPIO32 | 433MHz Receiver |
| GPIO2 | Buzzer |
| GPIO34 | RS485_RXD |
| GPIO2 | RS485_TXD |
| GPIO39 | BL0939 Power Sensor 1-2CH RXD |
| GPIO12 | BL0939 Power Sensor 1-2CH TXD |
| GPIO36 | BL0939 Power Sensor 3-4CH RXD |
| GPIO33 | BL0939 Power Sensor 3-4CH TXD |
| Additional pinout/design details | |
Basic Configuration
# Basic Config
esphome:
name: KC868-E8T
on_boot: #Power chip BL0939 initialization
priority: 600
then:
- uart.write:
id: uart_1
data: [0xA5, 0x39, 0x42, 0x00, 0x00, 0xDF]
- delay: 1ms
- uart.write:
id: uart_1
data: [0xA5, 0x38, 0x3C, 0x00, 0x00, 0xE6]
- delay: 1ms
- uart.write:
id: uart_1
data: [0xA5, 0x39, 0x42, 0x00, 0x00, 0xDF]
- delay: 1ms
- uart.write:
id: uart_1
data: [0xA5, 0x3A, 0x01, 0x00, 0x00, 0x1F]
- delay: 1ms
- uart.write:
id: uart_1
data: [0xA5, 0x39, 0x00, 0x00, 0x00, 0x21]
esp32:
board: esp32dev
uart:
- id: uart_1
tx_pin: GPIO12
rx_pin: GPIO39
baud_rate: 4800
parity: NONE
stop_bits: 2
- id: uart_2
tx_pin: GPIO33
rx_pin: GPIO36
baud_rate: 4800
parity: NONE
stop_bits: 2
# Enable logging
logger:
# Enable Home Assistant API
api:
ota:
password: "d83d604e4f0ae287fb041dbaf31524d9"
# Example configuration entry
ethernet:
type: LAN8720
mdc_pin: GPIO23
mdio_pin: GPIO18
clk_mode: GPIO17_OUT
phy_addr: 0
sensor:
- platform: bl0939
uart_id: uart_1
update_interval: 10s
voltage:
name: 'BL0939A Voltage'
current_1:
name: 'BL0939A Current 1'
current_2:
name: 'BL0939A Current 2'
active_power_1:
name: 'BL0939A Active Power 1'
active_power_2:
name: 'BL0939A Active Power 2'
energy_1:
name: 'BL0939A Energy 1'
energy_2:
name: 'BL0939A Energy 2'
energy_total:
name: 'BL0939A Energy Total'
- platform: bl0939
uart_id: uart_2
update_interval: 10s
voltage:
name: 'BL0939B Voltage'
current_1:
name: 'BL0939B Current 1'
current_2:
name: 'BL0939B Current 2'
active_power_1:
name: 'BL0939B Active Power 1'
active_power_2:
name: 'BL0939B Active Power 2'
energy_1:
name: 'BL0939B Energy 1'
energy_2:
name: 'BL0939B Energy 2'
energy_total:
name: 'BL0939B Energy Total'
# Example configuration entry for ESP32
i2c:
sda: 4
scl: 5
scan: true
id: bus_a
pcf8574:
- id: 'pcf8574_hub_out_1' # for output channel 1-8
address: 0x24
- id: 'pcf8574_hub_in_1' # for input channel 1-8
address: 0x22
# Individual outputs
switch:
- platform: gpio
name: "e8t-light1"
pin:
pcf8574: pcf8574_hub_out_1
number: 0
mode: OUTPUT
inverted: true
- platform: gpio
name: "e8t-light2"
pin:
pcf8574: pcf8574_hub_out_1
number: 1
mode: OUTPUT
inverted: true
- platform: gpio
name: "e8t-light3"
pin:
pcf8574: pcf8574_hub_out_1
number: 2
mode: OUTPUT
inverted: true
- platform: gpio
name: "e8t-light4"
pin:
pcf8574: pcf8574_hub_out_1
number: 3
mode: OUTPUT
inverted: true
- platform: gpio
name: "e8t-light5"
pin:
pcf8574: pcf8574_hub_out_1
number: 4
mode: OUTPUT
inverted: true
- platform: gpio
name: "e8t-light6"
pin:
pcf8574: pcf8574_hub_out_1
number: 5
mode: OUTPUT
inverted: true
- platform: gpio
name: "e8t-light7"
pin:
pcf8574: pcf8574_hub_out_1
number: 6
mode: OUTPUT
inverted: true
- platform: gpio
name: "e8t-light8"
pin:
pcf8574: pcf8574_hub_out_1
number: 7
mode: OUTPUT
inverted: true
binary_sensor:
- platform: gpio
name: "e8t-input1"
pin:
pcf8574: pcf8574_hub_in_1
number: 0
mode: INPUT
inverted: true
- platform: gpio
name: "e8t-input2"
pin:
pcf8574: pcf8574_hub_in_1
number: 1
mode: INPUT
inverted: true
- platform: gpio
name: "e8t-input3"
pin:
pcf8574: pcf8574_hub_in_1
number: 2
mode: INPUT
inverted: true
- platform: gpio
name: "e8t-input4"
pin:
pcf8574: pcf8574_hub_in_1
number: 3
mode: INPUT
inverted: true
- platform: gpio
name: "e8t-input5"
pin:
pcf8574: pcf8574_hub_in_1
number: 4
mode: INPUT
inverted: true
- platform: gpio
name: "e8t-input6"
pin:
pcf8574: pcf8574_hub_in_1
number: 5
mode: INPUT
inverted: true
- platform: gpio
name: "e8t-input7"
pin:
pcf8574: pcf8574_hub_in_1
number: 6
mode: INPUT
inverted: true
- platform: gpio
name: "e8t-input8"
pin:
pcf8574: pcf8574_hub_in_1
number: 7
mode: INPUT
inverted: true
