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sensor_adc.yaml
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sensor_adc.yaml
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sensor:
#ADC2 pins cannot be used when Wi-Fi is used
#https://docs.espressif.com/projects/esp-idf/en/v4.4.7/esp32/api-reference/peripherals/adc.htm
# ADC_ATTEN_DB_0 : 100 mV ~ 950 mV
# ADC_ATTEN_DB_2_5 : 100 mV ~ 1250 mV
# ADC_ATTEN_DB_6 : 150 mV ~ 1750 mV
# ADC_ATTEN_DB_12 : 150 mV ~ 2450 mV
### new version with opamp
## in use the motor use 15-20 mV. At endstop, it raise to 50 mV
- platform: adc
pin: ${adc_bemf_1_pin} #GPIO36
name: "BEMF 1" #CH1 + CH2
update_interval: 100ms # the start of motor need a lot of current (>480 mv), it must be averaged to not trigger the endstop. If 10ms, it always stop. The BEMF trigger must be approx 0.32mv
attenuation : auto
accuracy_decimals: 3
# samples: 10
filters:
- offset: -0.075 # stall voltage : https://github.com/nliaudat/floor-heating-controller/wiki/BEMF-trigger-calculation
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_1_2_sensor_ADC
- platform: adc
pin: ${adc_bemf_2_pin} #GPIO39
name: "BEMF 2" #CH3 + CH4
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
# samples: 10
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_3_4_sensor_ADC
- platform: adc
pin: ${adc_bemf_3_pin} #GPIO34
name: "BEMF 3" #CH5 + CH6
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
# samples: 10
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_5_6_sensor_ADC
- platform: adc
pin: ${adc_bemf_4_pin} #GPIO35
name: "BEMF 4" #CH7 + CH8
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
# samples: 10
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_7_8_sensor_ADC
###### Old version without opamp
### in use the motor use 15-20 mV. At endstop, it raise to 50 mV
# - platform: adc
# pin: GPIO36
# name: "BEMF 1" #CH1 + CH2
# update_interval: 500ms
# attenuation : 2.5db # 100-1250mv #0 for a full-scale voltage of 3.9V#6db #for a full-scale voltage of 2.2V #https://esphome.io/components/sensor/adc.html & https://docs.espressif.com/projects/esp-idf/en/v4.4/esp32/api-reference/peripherals/adc.html#adc-limitations
# id : BEMF_1_2_sensor_ADC
# - platform: adc
# pin: GPIO39
# name: "BEMF 2" #CH3 + CH4
# update_interval: 500ms
# attenuation : 2.5db # 100-1250mv
# id : BEMF_3_4_sensor_ADC
# - platform: adc
# pin: GPIO34
# name: "BEMF 3" #CH5 + CH6
# update_interval: 500ms
# attenuation : 2.5db # 100-1250mv
# id : BEMF_5_6_sensor_ADC
# - platform: adc
# pin: GPIO35
# name: "BEMF 4" #CH7 + CH8
# update_interval: 500ms
# attenuation : 2.5db # 100-1250mv
# id : BEMF_7_8_sensor_ADC
##### testing pulse counter
# - platform: pulse_counter
# pin: GPIO36
# name: "pcnt BEMF 1" #CH1 + CH2
# use_pcnt: true
# internal_filter: 10us
# update_interval: 100ms
# id : pcnt_1_2_sensor_ADC
# - platform: pulse_counter
# pin: GPIO39
# name: "pcnt BEMF 2" #CH3 + CH4
# use_pcnt: true
# internal_filter: 10us
# update_interval: 100ms
# id : pcnt_3_4_sensor_ADC
# - platform: pulse_counter
# pin: GPIO34
# name: "pcnt BEMF 3" #CH5 + CH6
# use_pcnt: true
# internal_filter: 10us
# update_interval: 100ms
# id : pcnt_5_6_sensor_ADC
# - platform: pulse_counter
# pin: GPIO35
# name: "pcnt BEMF 4" #CH7 + CH8
# use_pcnt: true
# internal_filter: 10us
# update_interval: 100ms
# id : pcnt_7_8_sensor_ADC