I want to bypass the onboard regulator and use the 5V pin to feed arduino with external, regulated source.
Everybody just keeps saying regulated 5V, but how precise does the regulation need to be exactly? Can you state a voltage range and what makes you think so?
10 ways to destroy arduino, Method #5: Apply >5V to the 5V Connector Pin mentions "applying more than 6V", can anyone elaborate how it can be calculated?
Is there a higher spike that arduino can handle for a short period of time? My concern is that the current draw from arduino might be under 60mA (right after switching power on and before the program initilizes and starts running), which is the lowest draw at which my source guarantees the 5V regulation --- when unloaded it gives out 6.5V. How could I resolve this better than putting a 60mA dummy load between the regulator and arduino itself?