Projects look so pretty until the business of using wires to connect everything up happens.
I’ve got a real time clock (which comes with 64k of EEPROM, bonus?) and I’m planning on using an NXP 74HC595 shift register to sink current from the common-anode 7-segment LED displays I’m using. Three pins on the ATmega328 will source current for the displays. Only one display will be on at a time.
If it doesn’t flicker too much, I’d like to just have one segment on at a time - each “frame” we’ll shift in a pattern that lights one segment, and then turn on current to that display, then everything goes off again and the process starts over.
- Yeah we don’t really adhere to this, but I have my IRC client set to beats and various bots will tell you the time in beats, so I’m rolling with it. [return]