Minimum speed of the fan depends on the fan.
Mine are running about 500rpm at 1%.
You can try reduce supply voltage, for example 9v or less at a 12v fan.
@nikPo @ilgio Have you managed to solve this problem? My fan is 12V DC (max 0.12A). Mosfet (IRF520N) connected to ESP32. Without the fan, the output is 12V, and with the fan connected it is a little over 3V, which of course does not let it start.
Hi there,
I have a 24v fan that can run in 2 directions.
I manage to connect my Cytron Mdc30R2 to a esp8266 gpio 2 and 4
2 is pwm and 4 is direction
It works fine , but direction is not available in HA and not working.
Here is my code:
substitutions:
device_name: largefan24v
device_description: Large 24V Fan controller
friendly_name: fan24pwm
esphome:
name: ${device_name}
comment: ${device_description}
platform: ESP8266
board: nodemcuv2
on_boot:
- priority: 200.0
then:
- output.set_level:
id: pwmfan
level: 0%
wifi:
ssid: BRAIN
password: $$
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: ${friendly_name}_AP
password: techuser
captive_portal:
# Enable logging
logger:
# Enable Home Assistant API
api:
password: techuser
# Enable OTA
ota:
password: techuser
switch:
- platform: restart
name: ${friendly_name} Restart
binary_sensor:
# Reports if this device is Connected or not
- platform: status
name: ${friendly_name} Status
sensor:
# Reports the WiFi signal strength
- platform: wifi_signal
name: ${friendly_name} Signal
update_interval: 60s
# Reports RPM by pulse_counter
- platform: pulse_counter
pin: D7
name: ${friendly_name} Fan Speed
unit_of_measurement: 'RPM'
filters:
- multiply: 0.5
- lambda: |-
if (x <= 1500) return x;
else return {};
count_mode:
rising_edge: INCREMENT
falling_edge: DISABLE
update_interval: 30s
# Reports how long the device has been powered (in minutes)
- platform: uptime
name: ${friendly_name} Uptime
filters:
- lambda: return x / 60.0;
unit_of_measurement: minutes
text_sensor:
# Reports the ESPHome Version with compile date
- platform: version
name: ${friendly_name} ESPHome Version
# Reports WiFi name
- platform: wifi_info
ssid:
name: ${friendly_name} WiFi
# Reports IP
- platform: wifi_info
ip_address:
name: ${friendly_name} IP
status_led:
pin:
number: D0
inverted: False
output:
- platform: gpio
pin: D3
id: fan_supply
- platform: gpio
pin: D4 #### i added this
id: fan_direction #### but it is not working, not detected by homeassistant
- platform: esp8266_pwm
pin: D2
frequency: 5000 Hz
id: pwmfan
fan:
- platform: speed
output: pwmfan
name: ${friendly_name} Fan
on_turn_on:
- output.turn_on: fan_supply
- logger.log: "Power of Fan turned ON"
on_turn_off:
- output.turn_off: fan_supply
- logger.log: "Power of Fan turned OFF"
- delay: 1s
- logger.log: "Write 100%% to output pwmfan"
- output.set_level:
id: pwmfan
level: 0%
You dont have direction configured for your fan. You have an Ouput but no way to use it with your fan. You dont have any speeds configured either.
Thanks for the reply.
I am a newbee …
How to solve it?
Look at the Fan documentation.
Speed works perfict with a slider
Yes, but its easier to have presets for use in automations or whatever else you might do.
It is a 24v Truck fan 40cm and a MDC30 speedcontroller bu Cytron
Not much documentation
The esphome documentation
I searched , but no examples with direction
As i understand : if i define it in the esp code, it schould be detected by HA…
Searched where? You havnt defined it though
i searched esp forums google …
Yes i saw thatone but no direction…
Esphome has a website for documentation… It was probably the first search result you got.
Dude… it’s literally called Direction. Look harder
That is wher i got the espcode … but no direction switch
