Welcome to CuVoodoo,
the sorcery of copper.
*side cutters
*the bomb
I am remotely controlling the power supply
and motors are very electronically noisy
like reverse diodes, over-heating protection, ...
*with
*relative position, not absolute
e.g. 1/8th of a step
for our use it does not really matter though
3A are required for the large motor
these are several tapping points of the coil
*what
*buttons
the flame thrower is a regular kitchen torch, often used to make crème brûlée
see episode #021 - on my mark, starting at 24:40
e.g. digital input pins
this uses the PCF8574
*8
they are a type of shift registers, 74HC165D is such a PISO (parallel in, serial out) shift register
see episode #021 - on my mark, starting at 45:31
4+4 = 8 wires 4x4 multiplexed wires = 16 combinations
a CD74HC4067
*read low, e.g. 0
Z is connected to a pin with a pull-up resistor
actually it is too fast for the camera to pick it up
removing the jumper disables the buzzer, better for the recording