I haven't used a DUE before and am unsure of how to filter/isolate the Vin power connection.
What I desire is to have the DUE and pwm board and a dozen hobby servos (MG996R mostly) running off the same 7.2V NiMh 5300 mAHr battery.
I have some 2200 uF caps (looking for 4700's for a total of about 10,000uF) that I will mount on a DUE shield with a .1uF or so polyester cap in shunt. Grounds and power connection for the battery, DUE Vin line and servo board will all meet at the same point. Servos will start up at .2 sec intervals.
It looks to me that the DUE has some kind of cap and a diode on it's power in. I can't quite read the schematic.
I have considered adding an inline diode and another 2200UF cap at the DUE power in so the DUE line doesn't sag when the servos spike. The diode drop would take this below the 7V recommended though. I'm not sure why a DUE needs 7V for any reason other than it's 5V power out line which I don't need. All the peripherals are 3.3V.
Am I worried too little or too much about DUE power?
Should I use the diode isolation with cap?
I want to wire this up today.