Bill Of Materials ================= Design: Timer AVR Author: Theodosiou Antonios Created: 11/07/09 Modified: 02/10/09 QTY PART-REFS VALUE --- --------- ----- Resistors --------- 10 R1 - R10 220R 1 R11 470R 1 R12 4K7 Capacitors ---------- 2 C1,C2 1uF 1 C3 1000u 2 C4,C5 100n Integrated Circuits ------------------- 1 U1 CD4511 Com. Cath. BCD to 7seg Decoder 1 U2 ATMEGA8 AVR 8bit microcontroller 1 U3 OPTOCOUPLER-NPN 1 U4 7812 1 U5 7805 Transistors ----------- 6 Q1-Q5,Q7 BC328 800mA pnp 1 Q6 2N2222A 800mA npn Diodes ------ 1 D4 1N4001 Miscellaneous ------------- 1 BR1 Any diode bridge > 1A 1 FU1 1A fuse 1 J1 AC OUT socket 1 J2 CONN-DIL14 for the connection with the led board 1 J3 BUZZER 1 J4 SET button 1 J5 START/STOP button 1 J6 POWER LED 1 J7 AC IN socket 1 RL1 12V relay 1 TR1 220V/14V 1VA transformer