I am very new to circuitry and have attempted to make a circuit (only using IC's) which displays 0's and 1's from the shift register as LED's either on or off, and through the use of a 555 timer shift these values along every so often.
2 555 timers one with 10k resistors and the other with 20k, both with 100 micro farad capacitors. These timers are communicating with the shift register to make a series of moving LED's
Sorry if the diagram is a bit messy, this was very rushed. Basically I am using 2 555 timers on astable mode to tell the register to shift data or store new incoming data. One of the timers is running at double the entire cycle of the other (or at least it should be and I believe that is a possible issue), and thus when the timers match the shift register will shift in a 1 and when not a 0, this is then displayed via a series of LED's.
My issue: The circuit is running some what fine until a few seconds in and then the register begins to shift in only 1's. I have no idea why this is occurring I have already disassembled and reassembled the circuit 3 times and I don't see a change.
Another but way less prominent issue which I thought I should mention, whenever I start the circuit I am given a random (it may not be) series of on and off values stored in the register.
Sorry if this seems a bit much, I am very new to circuitry and wanted to start moving away from using micro controllers for everything. This has become very tedious for me and just wanted an opinion or two.