US $19.95
US $49.90 – US $50.90
US $59.95 – US $1,500.00
Sidebar blog
Post Date
April,
01
2024
This is a simple up and down counter that can be operated by a four-channel RF remote.
The 74LS192 or CD40192 up and down counter chip is used in this gadget. The 74LS192 chip is triggered by a NE555 (set in monostable mode). The CD4511 chip controls the seven-segment display.
Schematic:
All the components required to build this counter are listed below:
- 1 x 74LS192
- 7 x 100 Ohm resistors
- 5 x 1K Ohm resistors
- 4 x 10K resistors
- 2 x tactile reset switch
- 2 x 0.1uF capacitors
- 2 x 100uF electrolytic capacitor
- 2 x BC557 transistors
- 1 x 0.56″ seven segment display common cathode
- 3 x 16 pins IC socket
- 2 x 8 pins IC socket
- 1 x 7 pins female headers
- 1 x CD4511
- 1 x CD4049
- 2 x NE555
- 1 x MicroUSB connector for 5V
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