I am building an e-board with a 10S5P Li-ion battery (15000mAh).
50A BMS
190kv 6355 motor from DIY, single drive
VESC
I was wondering how I could add a USB port for charging my phone. I was told I would need a converter (buck converter?) to bring the voltage down from 36V to 5V but I am unsure where to go from here.
This is how I built my USB phone charger: I have a BEC (13-60V) that regulates the full pack voltage to power my 12V rail. Then I have a cheap $3 BEC (6-23V) that steps it down to 5V. Basically I already had the 12V BEC, so for $3 more, why not? Then I just soldered on positive/negative wires to the outer leads of a USB receptacle. Lookup the pinout on the google machine
But if just want a phone charger and nothing more, the easiest and cheapest method would be to use the 5V output from the VESC. However this requires the VESC to be on to do so
@Tonto2k I don’t quite understand how you made a female type A USB port to charge a phone off of the VESC. Could you (or anyone reading this) explain how a USB port can be modified to come out of the VESC? Maybe a diagram would help…
Thanks!!
You use the “Batt” 3 pin connector on your R/C Receiver. The vesc supplies power to the receiver through whichever servo channel you have it connected to.
Therefore, the power for the usb is connected to the mal and female of the “Batt” pins. There should be three of them, usually they are labelled positive and negative.
You will need to wire in the positive wire from a female usb to the positive of the “Batt” pins and a the negative from the usb to the negative of the “Batt”.