Voltage-Controlled Filter (VCF) by barber408 (23 mins ago)

12, 9, 5V DC Power Supply by barber408 (6 hours ago)

cmos-blinker by barber408 (7 hours ago)

pjfet-vca by barber408 (23 hours ago)

16 LED chaser 74164 ic by Babu (10 days ago)

battery level indicator using LM358 10%,20%,30%,40%,50% by Babu (11 days ago)

power supply by rbrtschmdt ★7

0 - 9 decimal counter using 555 timet as the clock by mthompson ★5

555 ★4

Bridge Rectifier ★4

FunkyTown 555 by WorldofZAP ★3

Arduino 4-20mA sensor by step ★3

555 ★4

7-Segment Counter ★1

74164

Absolute Value of Difference Amplifier

Amplifier

Arduino Music ★2