PWM with ESP32-Lyrat

[pierreantoine]

Hi,

What would be the best way to add more pins such as GPIO and PWM to an ESP32-Lyrat dev board ?
Is there some extension boards or even a possibility to make it communicate with an Arduino nano for example ?

Thanks !

[jason.mao]

Hi

There are two pins(IO12 and IO 13) can be free use, firstly SDCARD set 1 line mode, then set the switch(J18) pin4 and pin5 ON, `JT_IO13_MTCK` and `JT_IO12_MTDI` can be used by J19. Hope to help you.

Thanks.

[pierreantoine]

Thanks !
Unfortunately I would need 4 PWM pins + 1 I/O.
Do you think I can manage to connect another small extension board ?

[kangasp]

I know this post is a bit old, but thought I'd add this.

There's an available I2C port on the Lyrat. So, a board like this might meet your needs.

SparkFun 16 Output I/O Expander Breakout - SX1509
https://www.sparkfun.com/products/13601 ... 1555614610