i've got a pretty basic question but i'd rather look stupid asking something than frying something because i didn't ask.
i'm still planning my start/stop switch, work has prevented me from getting all the parts needed but i should start building it any day now. meanwhile i've worked on the theory a bit more.i'll probabky go for two push buttons with a different colored LED build into each, so that i'd can spot the buttons from the corner of my eye while watching traffic even at night and don't accidently use the wrong one. i plan to have the leds on at all times when the engines on, red and green would look cool especially since id be using it at stoplights
here's the schematic.
basically what i want to do is place the two leds (wich are part of the switches but have separate connections) in series with a resistor to keep them from burning up.
the only info i have on the leds is that they need 1.7V
here's how i calculated the resistor:
i'm assuming 0.02A is ok, but this is my first question, is it?
secondly since most resistors have a 10% tolerance i'm likely to get e slightly different resistor especially if i get one from the E12 range. also battery voltage may varry so i'm wondering how much deviation from my 0.02A is acceptable?
finally does the scematic i drew up look acceptable, or is it plain wrong?
i used to studdy electronics a long time ago in school but haven't really used it since... i sort of got lost when things got to theoretic and complex and moved onto totally different studdies afterwards, but now i've decided to give these simple practical applications a try i can pick it up again.... it's a shame how much one can forget when you don't use it every day. i find myself having to look up even the most basic things again....
anyway i'd appreciate any help i can get in making sure this works in a safe way, i might always expand on it later to improve it.
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