Hi, On the Jeelab web page it says that their dimmer plug with the PCA9635 IC works at 3.3V. What confuse me a bit is the PCA9635 data sheets says the chip works in the range from 2.3V-5.5V. Based on the data sheet I would expect to be able to connect the dimmer plug directly to the 5V Arduino I2…

Jeelab Dimmer plug

CrossRoads October 26, 2011, 2:57am 3

Schematic
http://jeelabs.net/attachments/68/jlpcb-079.pdf
Use with 5V, no problem.
Don't forget pullup resistors on SCL/SDA lines.

Topic		Replies	Views
PCA9685 i2C pwm driver: 0.5V at output when off LEDs and Multiplexing	5	1028	May 6, 2021
I2C (SDA-SDL) Voltage problem Networking, Protocols, and Devices	8	10231	May 6, 2021
I2C Pin Voltage General Electronics	14	7501	May 6, 2021
I2C Bus with 3.3v and 5.0v Device Networking, Protocols, and Devices	8	38063	May 6, 2021
Control P30N06LE with PCA9685? General Electronics	14	3008	May 6, 2021