Drawdio pencil synth buildguide, v1 2019
The Drawdio makes sound by using the conductive proporties of graphite. One end of the synth is
connected to the pencil's graphite core, the other end is connected to you. The resistance of your
drawing makes higher or lower pitches; making music!
1: Resistors
Start with sorting the resistors.
R1 = 300K "brown-orange-black-black-orange"
R2 = 10K "small blue resistor"
R3 = 10R "brown-black-black-gold-brown"
R4 = 22M "red-red-blue-gold' - this is the unmarked light brown resistor!
Bend the resistor legs at 90 degrees on both sides and insert them in the right locations. Solder!
2: Small Capacitors:
Insert the capacitors in place:
C1: 100nF
C2: 680pF (you might need to bend the legs a bit on this one)
Solder!
