Up and down counter trigger module using flashing LEDs

 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 […]

 In this post, I’ll show you how I built a basic 3′′ seven-segment display out of 5mm LEDs. This project was done during the Scoreduino project’s research and development phase. Built with 29 pieces of 5mm LEDs, this is a COMMON CATHODE seven-segment display. For this display, there is also a driver. For students […]