News for hackers. Stuff that matters.

A comment on ESP32 Buyer’s Guide: Different Chips, Firmware, Sensors. Parent comment

Re:ESP32 Buyer’s Guide: Different Chips, Firmware, Sensors by tyingq on Saturday February 04, 2023 @11:16AM (#34655523)
The Teensy is very popular for acting as either USB host or peripheral and there's lots of projects to draw ideas and code from. The latest one only has 2 physical USB ports, so you would have to use a hub for your use case. I don't think you'll find a microcontroller with 4 physical ports anyway.

https://www.pjrc.com/store/teensy41.html

[ Parent | on HN ]
Re:ESP32 Buyer’s Guide: Different Chips, Firmware, Sensors by zamadatix on Saturday February 04, 2023 @11:29AM (#34655617)
Hub for the inputs is fine but I think I'd need 3 physical ports in that case - 1 for the hub and 2 for the separate outs.

However... it just occurred to me I could connect 2 together for cross signaling over the other pins and have 2 in and 2 out that way.

[ Parent | on HN ]
Re:ESP32 Buyer’s Guide: Different Chips, Firmware, Sensors by tyingq on Saturday February 04, 2023 @11:47AM (#34655793)
Another idea, STM32F103C8...3 physical USARTS.

A project using it: https://github.com/satoshinm/pill_serial

Specs: https://www.st.com/en/microcontrollers-microprocessors/stm32...

[ Parent | on HN ]