What is a sprint and a scrum, and how long is a typical sprint cycle?

Roughly many pwm pins can be configured on an stm32? 

How many counts per revolution on a Pololu HP motor encoder?

How many pins on an HCSR04 sensor?

What is the maximum current draw of an esp32-cam module? Give your answer in milliamps.

How many gpio pins does a pi4b have?

What is a good minimum hole diameter for 3D printing?

When more current is required than the regulator can produce:

You have a 12V 2.5A power supply, you use this to power a 5W motor, and also use a voltage regulator to convert this supply to 5V, which is used to power a microprocessor that draws 3A. How much power do you have left for additional electronics?

You have created a 4 bit D to A using four pins of your micro-controller and an R/2R ladder, the output of this: