DCS Bios master power

[chouclak]

Hi,

 

I would like to know, I'm buidling a small pit with master and slave. Did I need to power my Mega with independant 12v + connecting the USB to pc or just the USB is enough ??

 

Thanks !

[Vinc_Vega]

For only one Mega the power supply of the USB is enough even in combination with the Max485 chip.

[Blue73]

no need, you can drive many nano's off the +5V rail from the Mega, though mine was in a USB3 port.

[aniron]

no need, you can drive many nano's off the +5V rail from the Mega, though mine was in a USB3 port.

Does that matter seeing as the Mega isn't USB3?

I thought it had to negotiate for more than 500mA anyway?

 

Edit: Looks like arduinos have a polyfuse for 500mA on the USB power.

If you need more, you can bring in 7-12V through the barrel plug, and the Arduino will then convert to 5V and draw up to 1A.

Edited February 18, 2019 by aniron

[chouclak]

Thanks guys, Sorry for the late response

[Blue73]

Thanks Aniron, I've learnt a few new things. :)

 

cheers

 

John

 

Does that matter seeing as the Mega isn't USB3?

I thought it had to negotiate for more than 500mA anyway?

 

Edit: Looks like arduinos have a polyfuse for 500mA on the USB power.

If you need more, you can bring in 7-12V through the barrel plug, and the Arduino will then convert to 5V and draw up to 1A.

[chouclak]

Does that matter seeing as the Mega isn't USB3?

I thought it had to negotiate for more than 500mA anyway?

 

Edit: Looks like arduinos have a polyfuse for 500mA on the USB power.

If you need more, you can bring in 7-12V through the barrel plug, and the Arduino will then convert to 5V and draw up to 1A.

 

So if I understand well, I should connect both ; the usb to the computer (obviously..) and the 12v power supply, so I will have enough power for chips and slaves, and if I need 5-12v, I will have it via the VIN pin ?

[aniron]

No, if you need more than 500mA draw including the arduino master and anything you power off its +5V rail, then you add 7-12V to the barrel plug, the arduino stops drawing from the USB, converts the input voltage to +5V, and you can power more stuff on the +5V rail, still at +5V.

 

If I understand it correctly.

[chouclak]

No, if you need more than 500mA draw including the arduino master and anything you power off its +5V rail, then you add 7-12V to the barrel plug, the arduino stops drawing from the USB, converts the input voltage to +5V, and you can power more stuff on the +5V rail, still at +5V.

 

If I understand it correctly.

 

Yes I understand that but you need to connect the input/output for the data so the both will be connected :thumbup: