SM2335 LED driver

Component/Hub

The SM2335 component represents a SM2335 LED driver chain in ESPHome. Communication is done with two GPIO pins (DATA and CLK). It is used in some smart light bulbs:

SwitchBot Color Bulb W1401400

To use the channels of this components, you first need to setup the global sm2335 hub and give it an id, and then define the individual output channels.

# Example configuration entry
sm2335:
  data_pin: GPIOXX
  clock_pin: GPIOXX
  max_power_color_channels: 9
  max_power_white_channels: 9

Configuration variables:

data_pin (Required, Pin Schema): The pin used for DATA.
clock_pin (Required, Pin Schema): The pin which CLK is connected to.
id (Optional, ID): The id to use for this sm2335 component. Use this if you have multiple SM2335 chains connected at the same time.
max_power_color_channels (Optional, int 0-15): Adjusts the current supplied to the color channels, higher is more power. Default is 2 per SM2335 datasheet. See table below.
max_power_white_channels (Optional, int 0-15): Adjusts the current supplied to the white channels, higher is more power. Default is 4 per SM2335 datasheet. See table below.

Note

The LED driver may be able to tolerate more power than the bulb is designed to handle, start with lower values and increase slowly, comparing to a stock bulb to verify what is safe for your model.

max_power_white_channels value	actual current
0	5 mA
1	10 mA
2	15 mA
3	20 mA
4	25 mA (default)
5	30 mA
6	35 mA
7	40 mA
8	45 mA
9	50 mA
10	55 mA
11	60 mA
12	65 mA
13	70 mA
14	75 mA
15	80 mA

max_power_color_channels value	actual current
0	10 mA
1	20 mA
2	30 mA (default)
3	40 mA
4	50 mA
5	60 mA
6	70 mA
7	80 mA
8	90 mA
9	100 mA
10	110 mA
11	120 mA
12	130 mA
13	140 mA
14	150 mA
15	160 mA

Output

The SM2335 output component exposes a SM2335 channel of a global Component/Hub as a float output.

# Individual outputs
output:
  - platform: sm2335
    id: output_red
    channel: 1

Configuration variables:

id (Required, ID): The id to use for this output component.
channel (Required, int): Chose the channel of the SM2335 chain of this output component.
sm2335_id (Optional, ID): Manually specify the ID of the Component/Hub. Use this if you have multiple SM2335 chains you want to use at the same time.
All other options from Output.

Note

This driver does support enabling of both the color and the white channels at the same time, but it is not encourage. Therefore, the Color Interlock should be set to true when using this driver for safest operation.