Among the 10 pitfalls mentioned, there is one bordered me, i.e. Method #10. It says lighting up 10 LEDs will damage the board. What should I do if I really have to light up 10 LEDs with individual control?
In other words, if you miswired the device but realised your mistake quickly, you may well be lucky and found you have not caused any permanent damage.
"Experience Gained is Directly Proportional to the Amount of Equipment Destroyed."
While pithy, it is not true.
Best to buy 2 Arduino boards from the getgo, :-), so if one stops workingyou can see if the software still downloads and functions on the good one.
You need a separate power supply / driver that is controlled by the arduino. Could be as simple as a logic-level MOSFET for each LED.
Quote from: KeithRB on Oct 31, 2012, 05:50 pmYou need a separate power supply / driver that is controlled by the arduino. Could be as simple as a logic-level MOSFET for each LED.Can I use shift registers (e.g. 74HC595) instead to solve the same problem?
12V connected to either 5V or 3V3 pin will _instantly_ destroy it guaranteed (in a few hundred microseconds the FET gates will puncture I bet).