Hi, I am nearly ready to make my "real" first project but when finishing "easy stuff" I noticed (power supply) bypass capacitors. On Google I have found many articles describing how they work and why they are needed. But I don't know: which one to use? Some someone doesn't address the question at all, someone says 0.1 uF ceramic. So my questions are:
How I decide which cap to use? Is it needed at all (never encountered a problem with stand alone chip without the cap). Is ANY 0.1 uF ceramic good in most of applications at 1-20 MHz speeds? Is 0.1 uF good value for such applications or I should use larger when switching "load" (such as LEDs)?
My "project" will be ATTiny sending Ir commands (38 kHz carrier frequency, around 10mA ON current) in 0.1 sec intervals powered by 2 NiMH AAAs directly connected to the MCU (so supply power 2-3V).
Thanks for answers/link to an article addressing this issue.