Can i use all the gpios on the esp32-c3 board safely?

[bonio22]

I'm planning on using this board with an spi tft screen, 5-way tactile switch, a regular tactile switch and a vibration motor to make a necklace that functions as a media con
troller, has minigames on it and the like.

The TFT needs SCK, MOSI, SS, RST and CS so that's 5 pins, the push buttons need another 6 and the vibration motor needs 1. Sums up to 12 out of 13. My question is if i can actually use all the gpios or if it'll mess with the board someway, apparently on some boards if i use the rx or tx pins then i can't use any serial functions, but i haven't been able to find out whether it holds true for this board specifically. If anyone has experience with this board and topic then i'd appreciate the help.

[Railroader]

@bonio22

My question is if i can actually use all the gpios

I will say no. Save GPIO20 and 21 for debugging.

@bonio22

5-way tactile switch

Can You give some technical information about it?

[bonio22]

https://a.aliexpress.com/_Expl5Mk

It's this one. I've gathered from the description that it has 5 pins for the respective positions and a common pin that acts as the ground

[van_der_decken]

Always a good reference for which GPIOs are safe to use as you like, which GPIOs are safe to use under certain conditions, and which GPIOs are best avoided.

ESP32 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials