1. 5 4 3 2 1
D D
C1
22pF
C2
22pF http://www.5volt.eu
2.4576MHz
5Vcc
U1
Y1
ATtiny24
14
1
2
3
VCC
XTAL1
XTAL2
GND
J1
1 2 13 PA0
C Display seconds only ++ C
3 4 12 PA1
Set minutes ++
5 6 11 PA2
Set hours ++
7 8 10 PA3
Continuous / pulsed LASER ++
pin strip
PA5/MISO/OC1B
5
RESET/dW
PB2
PA4/SCL
6 7
OC0B/PA7 MOSI/PA6
5Vcc
4
9
8
J3
J2 1 To LASER (3V@20mA)
2
Yellow
1
Red
To servo 2
B 3 Black B
R1 R1 to be set on LASER
100 current / voltage rating
HITEC RC servo pinout: 5Vcc
5Vcc
other makes have J4
different pinout 1 ++ 2
3 4 Q1
++ NPN low power
5 ++ 6
R2
4k7
To ICSP
(Dragon)
For programming only (ICSP)
A A
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Size Rev
Document Number
Alessandro Lambardi - 02/2009 A4 00 00
Date: Feb 14, 2009 Sheet 1 of 1
5 4 3 2 1