No more secrets Part 2: Let us build the experimental board
Versione del 16 mag 2014 alle 09:50 di Renzo (discussione | contributi) (Creata pagina con '== Ingredients == * #1 Standard Breadboard (63 rows, 5+5 holes for row, power and ground rails on both sides) * #25 BC547 transistors * #24 10Kohm 1/4W resistors * #14 330ohm...')
Ingredients
- #1 Standard Breadboard (63 rows, 5+5 holes for row, power and ground rails
on both sides)
- #25 BC547 transistors
- #24 10Kohm 1/4W resistors
- #14 330ohm 1/4W resistors
- #4 led diodes (Red, 5mm are okay)
- #2 electrolyctic capacitors 10uF (microfarad) 16V
- #1 5V power supply (the tool uses at most 250mA) (instead of a power supply you may consider using a battery holder for three or four AA batteries, everything should work at 4.5 or 6V).
- #1 set of jumpers for breadboards.
- #23 0.3" jumpers
A piece of old multi pair telephone wire can be used to create the jumpers, both the 0.3" wide and the longer ones to build the experiments.
Tools needed: cable cutter or a pair of strong scissors. If you have a wire stripper it is useful, although not strictly needed.
If you like, it is clearer during the experiments to provide the inputs using buttons instead of moving jumpers. In order to build a keypad for the input you need:
- #1 another breadboard (maybe smaller than the one above, I'm using a 30
rows one)
- #5 or more buttons for breadboards
- #5 jumpers (which can be created using the old telephone cable).
