Hi,
Where can i find a genuine circuit diagram for the Arduino Nano EVERY please?
I am particularly interested in finding out if the VUSB and Vin are connected together before I do powered up in circuit debugging. (Serial.Println etcetera).
I can find several iterations of the Nano schematics and they are all different
One has a Scottky diode between VUSB and Vin, one has a 'varistor' and one has VUSB and Vin connected directly together.
Clearly the latter is dangerous as one would be connecting the outputs of two PSU's together and could damage the PC's USB output. I don't understand what the 'varistor' is supposed to be doing?
I am hoping my Nano EVERY has a Schottky diode but can't find the actual schematic for the EVERY version of the NANO.
HI thanks don't know why I didn't find this?
My project has some analogue signal conditioning running off 5V feeding into A0 pin on the Every.
This electronics is powered directly from an on board LM7805 5V regulator.
The Nano Every is also powered from this regulator.
The analogue stuff only takes a few milliamps.
Subsequently I realised the Nano has a 1.2A 5V output from its MPM3610 SMPSU chip.
In your experience would it be better to always power external circuitry from the Nano's 5V out pin to keep everything running from the same 5V?
Dave
I'm no expert in this sort of thing, but my understanding is that, although less efficient, the linear voltage regulators like the LM7805 will produce a cleaner power than the switching power supplies. So if this is a concern for your analog circuitry, it might make sense to stick with the LM7805. You also might need a separate 5 V power supply if the on-board supply is not sufficient to provide the current needed to power the board as well as the external circuitry. Otherwise, I would definitely power everything from the on-board power just because it makes for a more compact and more simple circuit.