I’m using ESPHome with a 28BYJ-47/ULN2003 for some motorized blinds. Two out of the six blinds I have installed are rotating the opposite direction. How do I fix this?
If the stepper is driving in the wrong direction, you can invert the dir_pin:
dir_pin:
number: D1
inverted: true
Isn’t that only for the a4988 driver?
reverse the order of the connections from the ESP to the ULN2003.
Or reverse the pin definitions in the ESPHome code.
As far as I can tell, both motors are wired the same. Though they turn in different directions. I’ve heard of certain components reversing polarity, and instead decided to create two different configurations.
blinds.yaml, and blinds_reversed.yaml depending on which way the motor was turning.
blinds.yaml
cover:
- platform: template
device_class: blind
# lambda: |-
# if (((id($stepper_id).current_position * id($stepper_id).current_position) / id($stepper_id).current_position) == id(open_position)) {
# return COVER_OPEN;
# } else {
# return COVER_CLOSED;
# }
name: $cover_name
id: $device_id
open_action:
- stepper.set_target:
id: $stepper_id
target: "0"
- cover.template.publish:
id: $device_id
position: "1"
- globals.set:
id: current_position
value: "0"
close_action:
- stepper.set_target:
id: $stepper_id
target: !lambda "return -( $step_total / 2 );"
- cover.template.publish:
id: $device_id
position: "0"
- globals.set:
id: current_position
value: !lambda "return -($step_total / 2);"
position_action:
then:
- logger.log:
format: "Current: %d | Target: %.2f | Steps: %d"
args: ["id($stepper_id).current_position", "pos", "( $step_total * pos ) - ( $step_total / 2 )"]
- stepper.set_target:
id: $stepper_id
target: !lambda |-
return ( $step_total * pos ) - ( $step_total / 2 );
- cover.template.publish:
id: $device_id
position: !lambda "return pos;"
- globals.set:
id: current_position
value: !lambda |-
return ( $step_total * pos ) - ( $step_total / 2 );
stop_action:
- stepper.set_target:
id: $stepper_id
target: !lambda return id($stepper_id).current_position;
- globals.set:
id: current_position
value: !lambda "return id($stepper_id).current_position;"
has_position: true
esphome:
name: $esphome_name
on_boot:
priority: -200
then:
- stepper.report_position:
id: $stepper_id
position: !lambda "return id(current_position);"
- stepper.set_target:
id: $stepper_id
target: !lambda "return id(current_position);"
- cover.template.publish:
id: $device_id
current_operation: IDLE
position: !lambda "return (id($stepper_id).current_position + ( $step_total / 2 )) / $step_total;"
esp8266:
board: nodemcuv2
globals:
- id: close_position
type: int
initial_value: "9250"
- id: open_position
type: int
initial_value: "0"
- id: current_position
type: int
initial_value: "0"
restore_value: true
# Enable logging
logger:
level: DEBUG
# Enable Home Assistant API
api:
services:
- service: set_target
variables:
target: int
then:
- stepper.set_target:
id: $stepper_id
target: !lambda "return target;"
- service: report_position
variables:
position: int
then:
- logger.log:
format: "Reporting position to %d"
args: ["position"]
- stepper.report_position:
id: $stepper_id
position: !lambda "return position;"
- stepper.set_target:
id: $stepper_id
target: !lambda "return position;"
- globals.set:
id: current_position
value: !lambda "return position;"
ota:
password: "2515291ea63617d85b4bee51325fcd12"
wifi:
fast_connect: true
power_save_mode: none
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Fallback Hotspot"
password: "X87rZCD9TMHF"
captive_portal:
# @todo: make pin assignment sequential
stepper:
- platform: uln2003
id: $stepper_id
pin_a: D1
pin_b: D2
pin_c: D3
pin_d: D5
max_speed: 250 steps/s
sleep_when_done: true
# Optional:
acceleration: inf
deceleration: inf
substitutions:
cover_name: ""
device_id: ""
esphome_name: ""
step_total: "18500"
stepper_id: "my_stepper"
blinds_reversed.yaml
cover:
- platform: template
device_class: blind
# lambda: |-
# if (((id($stepper_id).current_position * id($stepper_id).current_position) / id($stepper_id).current_position) == id(open_position)) {
# return COVER_OPEN;
# } else {
# return COVER_CLOSED;
# }
name: $cover_name
id: $device_id
open_action:
- stepper.set_target:
id: $stepper_id
target: "0"
- cover.template.publish:
id: $device_id
current_operation: IDLE
position: "1"
- globals.set:
id: current_position
value: "0"
close_action:
- stepper.set_target:
id: $stepper_id
target: !lambda "return $step_total / 2;"
- cover.template.publish:
id: $device_id
current_operation: IDLE
position: "0"
- globals.set:
id: current_position
value: !lambda "return $step_total / 2;"
position_action:
then:
- logger.log:
format: "Current: %d | Target: %.2f | Steps: %d"
args: ["id($stepper_id).current_position", "pos", "( $step_total * pos ) - ( $step_total / 2 )"]
- stepper.set_target:
id: $stepper_id
target: !lambda |-
return -(( $step_total * pos ) - ( $step_total / 2 ));
- cover.template.publish:
id: $device_id
current_operation: IDLE
position: !lambda "return pos;"
- globals.set:
id: current_position
value: !lambda |-
return -(( $step_total * pos ) - ( $step_total / 2 ));
stop_action:
- stepper.set_target:
id: $stepper_id
target: !lambda return id($stepper_id).current_position;
- globals.set:
id: current_position
value: !lambda "return id($stepper_id).current_position;"
has_position: true
esphome:
name: $esphome_name
on_boot:
priority: -200
then:
- stepper.report_position:
id: $stepper_id
position: !lambda "return id(current_position);"
- stepper.set_target:
id: $stepper_id
target: !lambda "return id(current_position);"
- cover.template.publish:
id: $device_id
current_operation: IDLE
position: !lambda "return (id($stepper_id).current_position + ( $step_total / 2 )) / $step_total;"
esp8266:
board: nodemcuv2
globals:
- id: close_position
type: int
initial_value: "9250"
- id: open_position
type: int
initial_value: "0"
- id: current_position
type: int
initial_value: "0"
restore_value: true
# Enable logging
logger:
level: DEBUG
# Enable Home Assistant API
api:
services:
- service: set_target
variables:
target: int
then:
- stepper.set_target:
id: $stepper_id
target: !lambda "return -(target);"
- service: report_position
variables:
position: int
then:
- logger.log:
format: "Reporting position to %d"
args: ["position"]
- stepper.report_position:
id: $stepper_id
position: !lambda "return -(position);"
- stepper.set_target:
id: $stepper_id
target: !lambda "return -(position);"
- globals.set:
id: current_position
value: !lambda "return -(position);"
ota:
password: "2515291ea63617d85b4bee51325fcd12"
wifi:
fast_connect: true
power_save_mode: none
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Fallback Hotspot"
password: "X87rZCD9TMHF"
captive_portal:
# @todo: make pin assignment sequential
stepper:
- platform: uln2003
id: $stepper_id
pin_a: D1
pin_b: D2
pin_c: D3
pin_d: D5
max_speed: 250 steps/s
sleep_when_done: true
# Optional:
acceleration: inf
deceleration: inf
substitutions:
cover_name: ""
device_id: ""
esphome_name: ""
step_total: "18500"
stepper_id: "my_stepper"
hanks for sharing the yaml. I was able to create with the same model of motor and driver using this.: