I only ever used that infrared to control the classroom vcr, to the absolute befuddlement of the teacher. Only time I’ve seen someone tap the side of a vcr to fix whatever is broken with it.

I used the serial cable to hook it up to my computer and loaded it with minigames, to play during class.

You can tell I was not the best of students.

I remember the time I took a 1200 baud modem and a phone cord to school with me so that I could log into the county library system, which provided shell accounts, and check my email during class. My physics teacher didn’t seem very appreciative, but the kids with lesser calculators were impressed.

It was just a resistor away from full range ?

I keep dreaming of modding a 48 series to snatch an esp mcu in it.