I have a genuine UNO and Looking at the specs which say:
Input Voltage (recommended) 7-12V Input Voltage (limit) 6-20V
I want to run a project from a 15 Volt switch mode power supply (which I already have) because the other parts of the circuit use 5 to 12 Volts using linear voltage regulators, LM7805, 7809 and 7812. The current of the supply is 6.5 Amps which is easily enough for what I nead.
As the recommended voltage is 12 Volts, does the UNO act any differently with a higher voltage between 12 and the 20 volts limit.
Am I likely to have any problems running a project with a 15 Volt supply in to the barrel connector.
Any thoughts or comments appreciated.