Nottinghack - Drawdio

Nottinghack - Drawdio 

By Matt Little 

Circuit Diagram and PCB layout were done on KiCad - an open source PCB design package.

Parts List:

BT1       BATTERY

C1         Capacitor Polyester 0.1uF

C2         Capacitor ceramic 680pF 

C3         Capacitor Electrolytic 100uF

Q1        Transistor 2N3806 PNP

R1         Resistor 270K Ohms

R2         Resistor 10kohm 

R3         Resistor 10M Ohms

R4         Resistor 10ohm

SP1       SPEAKER

U1        Timer NE555N

1. Turn your circuit board so it look like this (below) 

2. Add the resistors:
From the left: 

R3 - 10M Ohms (BROWN, BLACK, BLUE)

R2 - 10k Ohms (BROWN, BLACK, ORANGE)

Top right: R4 - 10 Ohms (BROWN, BLACK, BROWN)

Bottom right: R1 - 270k Ohms (RED, VIOLET, YELLOW)

3. Add the capacitors:

4. Add the buzzer: 

to holes on far right, + on the left and - on the right (speaker not shown)

5. Add the transistor:

6. Add the 555 timer IC:

6: Add the battery pack & test:

7: Solder the copper foil to the long plate on the other side of the circuit board:

8: Enjoy!