0
votes
1answer
570 views

How to design a binary counter with 4029 binary counter ic

I am trying to build a circuit that counts up to 15 or 1111 in binary using a 4029 ic and 4 LEDs as demonstrated in this video. I have studied the 4029 datasheet, and I still can't figure out how to ...
7
votes
1answer
267 views

Simon Says without Microcontroller

I'd like to create the classic game of Simon Says utilising nothing but logic circuits, LEDs and ICs, no Microcontrollers like the Arduino. I would like to use 4 LEDs and 4 Tactile Switches for this ...
0
votes
3answers
354 views

Inexpensive programmable RGB LED driver/IC/solution?

My desire is to have a simple setup with a dial device (ideal would be a 3 click dial with 3 distinct settings but an analog dial would also be appropriate) whereby position 1 would display a color ...
4
votes
4answers
2k views

basic arduino question - do I need a 555 timer?

I have an Arduino (duemilanove) connected to a floppy disk drive and I can happily control the stepper motor using three pins on the ribbon cable to three digital pins of my Arduino (well 2 + the ...
3
votes
2answers
1k views

Why are 555 IC pin diagrams so random?

I was going to start learning how to use a 555 timer as an oscillator, however am greatly confused in the pin configurations example schematics provide me. To show visually what I mean, A random ...
3
votes
1answer
328 views

can pins 3 and 11 on the 556 timer use the same capacitor to ground?

can the control voltage pins 3 and 11 on the 556 timer use the same capacitor to ground? I assume that I can double the capacity of the 0.01\$\mu\$ capacitor to 0.02\$\mu\$ and share the capacitor ...