I bought one of these Cardputers when they first came out. It was cool for a while but ultimately it's just an ESP-32 S3 with some add-on peripherals. It's nice having a built in battery and USB charging but the screen is miniscule and the buttons on the keyboard are as well. Few GPIO pins are available on the breakout connector, but there is a couple of Grove connectors for I2C available. You could do more with a standard ESP-32 S3 board if you don't require the form factor of a device like this.
Oh yeah, it is Lego Technic compatible with the mounting holes if you want to combine it with Lego parts.
Thanks for the extra info.
The keyboard doesn't really feel durable.
Thanks for the extra info.
Glad to be of service.
The keyboard doesn't really feel durable.
Yeah the keyboard is a typical snap-dome tactile SMT switches like you would find in just about anything these days. They're fine for use at this size, but the whole keyboard if just too tiny. It's a keyboard for ants. I wouldn't want to try to type any significant amount of text on it but it does well for basic input. They should have a long life given that you won't want to type on them much.