I’m also having the same issue where I’m getting a “successful” install but when it tries to connect I get: An error occurred. Improv Wi-Fi Serial not detected. I’m using the same USB to TTL adapter @haydon is using. Have folks soldered on the leads to the board? I have clips right now.
I soldered to mine, don’t have clips…
I’m not sure why you’re getting that error though, I wonder if the code has changed…
1 Like
Ok, I found this and it worked! New device: An error occurred. Improv Wi-Fi Serial not detected - #15 by Vahaldor
Yesterday I got fan NR2 in the house:
The entire installation went smooth 
glad that annoying beep is gone.
The only thing I had to remember is when and for how long to hold the boot button
I reused the entire code of the old fan and changed a few wifi things.
Here is the code again so a new person does not have to scroll too far :
substitutions:
name: ifan04-h-office
device_description: Sonoff iFan04-H
friendly_name: ifan04-h-office
globals:
- id: target_fan_speed
type: int
- id: start_time_offset
type: int
esphome:
name: ${name}
comment: ${device_description}
platform: ESP8266
board: esp01_1m
on_boot:
priority: 225
# turn off the light as early as possible
then:
- light.turn_off: fan_light
on_loop:
lambda: |-
if (id(start_time_offset) && (millis() > id(start_time_offset))) {
ESP_LOGD("IFAN04", "Setting target speed: %d", id(target_fan_speed));
auto call = id(the_fan).turn_on();
call.set_speed(id(target_fan_speed));
call.perform();
id(start_time_offset) = 0;
}
# Disable logging on serial as it is used by the remote
logger:
baud_rate: 0
# Enable Home Assistant API
api:
encryption:
key: !secret ifan_api_2
ota:
- platform: esphome
password: !secret ota_password
wifi:
ssid: !secret lot_wifi_ssid
password: !secret lot_wifi_password
fast_connect: true
power_save_mode: light
use_address: !secret ip-fan-moff
ap:
ssid: "Ifan04-H-Office"
password: !secret ifan_fallback
captive_portal:
external_components:
- source: github://ssieb/custom_components
components: [ ifan04 ]
uart:
tx_pin: GPIO01
rx_pin: GPIO03
baud_rate: 9600
ifan04:
on_fan:
- lambda: |-
if (speed) {
auto call = id(the_fan).turn_on();
call.set_speed(speed);
call.perform();
if (id(buzzer_dummy).state) {
switch(id(target_fan_speed)) {
case 3:
id(buzzer_pin).turn_on();
delay(50);
id(buzzer_pin).turn_off();
delay(50);
case 2:
id(buzzer_pin).turn_on();
delay(50);
id(buzzer_pin).turn_off();
delay(50);
case 1:
id(buzzer_pin).turn_on();
delay(50);
id(buzzer_pin).turn_off();
}
}
} else {
id(target_fan_speed) = 0;
id(start_time_offset) = 0;
auto call = id(the_fan).turn_off();
call.perform();
}
on_light:
- light.toggle: fan_light
on_buzzer:
- switch.toggle: buzzer_dummy
sensor:
- platform: wifi_signal
name: ${friendly_name} Signal
update_interval: 60s
text_sensor:
- platform: version
hide_timestamp: true
name: "${friendly_name} ESPHome Version"
entity_category: diagnostic
- platform: wifi_info
ip_address:
name: "${friendly_name} IP Address"
icon: mdi:wifi
entity_category: diagnostic
ssid:
name: "${friendly_name} Connected SSID"
icon: mdi:wifi-strength-2
entity_category: diagnostic
binary_sensor:
- platform: gpio
id: button
pin: GPIO0
on_press:
then:
- light.toggle: fan_light
interval:
- interval: 500ms
then:
- if:
condition:
not:
wifi.connected:
then:
- light.turn_on:
id: led1
brightness: 100%
transition_length: 0s
- delay: 250ms
- light.turn_off:
id: led1
transition_length: 250ms
output:
- platform: template
id: fanoutput
type: float
write_action:
- lambda: |-
if (state) {
int speed = int(state / 0.33);
if (!id(target_fan_speed) && (speed < 3)) {
ESP_LOGD("IFAN04", "Fan currently off, boosting speed");
id(target_fan_speed) = speed;
state = 1.0;
id(start_time_offset) = millis() + 5000; // 5 second delay
} else {
id(start_time_offset) = 0;
id(target_fan_speed) = speed;
}
}
if (state < 0.3) {
// OFF
id(target_fan_speed) = 0;
id(start_time_offset) = 0;
id(fan_relay1).turn_off();
id(fan_relay2).turn_off();
id(fan_relay3).turn_off();
} else if (state < 0.6) {
// low speed
id(fan_relay1).turn_on();
id(fan_relay2).turn_off();
id(fan_relay3).turn_off();
} else if (state < 0.9) {
// medium speed
id(fan_relay1).turn_off();
id(fan_relay2).turn_on();
id(fan_relay3).turn_off();
} else {
// high speed
id(fan_relay1).turn_off();
id(fan_relay2).turn_off();
id(fan_relay3).turn_on();
}
- platform: gpio
id: light_relay
pin: GPIO9
inverted: true
- platform: gpio
id: buzzer_pin
pin: GPIO10
inverted: true
- platform: esp8266_pwm
id: led_pin
pin: GPIO13
inverted: true
light:
- platform: binary
id: fan_light
name: "${friendly_name} Light"
output: light_relay
- platform: monochromatic
id: led1
output: led_pin
default_transition_length: 0s
restore_mode: always off
switch:
- platform: restart
name: "${friendly_name} Restart"
- platform: template
id: buzzer_dummy
name: "Buzzer"
optimistic: True
- platform: gpio
id: fan_relay1
pin: GPIO14
- platform: gpio
id: fan_relay2
pin: GPIO12
- platform: gpio
id: fan_relay3
pin: GPIO15
fan:
- platform: speed
id: the_fan
name: "${friendly_name} Fan"
output: fanoutput
speed_count: 3
1 Like
Hi there. When using your YAML I am getting this error. This is only my 2nd esphome device so I am a relative newbie. Any advice?
ERROR Error while reading config: Invalid YAML syntax:
Secret ‘ifan_api_2’ not defined
in “/config/esphome/sonoff-fan-jeff-office.yaml”, line 39, column 10
You need to create this secret in the secrets file then it will compile for you
I believe we need a generic iFan external component now, because custom components are deprecated which all existing configs for these devices use.
Correct, my latest post with code already is migrated towards it and I am sure if you scroll further up you will find more examples that already are migrated
Hello, I’m using the same flasher as you and wired up the same but for some reason i can’t connect. When do you press the button and for how long? It’s the button next to where we wire in correct?
The button you need to press for flashing is circled in the below photo:
You need to be holding it down as you are plugging the flasher into the USB and first applying power to the board, keep holding it after connecting it to the flasher for a few seconds, and then release.
I just flashed one of these, and when I didn’t hold the button down, it was beeping at me when I connected it, which I believe is some sort of alarm that is in place to alert to potential flashing without the button being held. Having to hold the button as far as I know is a security feature to prevent installation of firmware without the user’s knowledge. Once ESP is flashed you can then apply updates over the air without needing to hold the button down.
I held down the button but it just keeps circling on connecting but never connects. I did it once with tx to rx and rx to rx and once with tx to tx and rx to rx. Did you have it powered with 120v as well while flashing?
No only connected to the power of the usb to uart else things might break.
1 Like
I ordered two more from aliexpress since the first one works so nicely but now I’m having issues flashing using the exact same setup. It seems to not be powering the board or something. Does anyone have any advice?
My repo name was a historical artifact and became misleading. It has been renamed, but github will still redirect the old name. The new name is esphome_components.