As a hobbyist I code in a variety of arduino's and in Digispark's (Attiny 85 and 167).
But I'm doing a project with space contraints, so I'd need to use just the MCU directly over my pcb.
Apart from a voltage regulator (to get the VIn to 5V or 3.3V) do I need extra components to mount the MCU to my PCB?
DO I need crystals, capacitors, etc? Or the MCUs (mostly AtMega 32u4 and Attiny85 and Attiny167) have it all what's needed inside them?
I'll program the MCU before soldering on to the PCB, so there's no need for USB or programming stuff or leds.