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Need help with electronics

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electric-skateboard

#1

so I have recreated this but it doesnt seem to work when i put in the xt90


Here is what ive done


#2
  • Do you have a multi-meter? I would check voltages at every point to make sure there’s no breaks anywhere.
  • I’m assuming the top port on the right side is charging and the bottom is the cutoff switch?
  • Is the cut of switch an anti spark plug, or a button?
  • Did you make sure you plugged it in/switched it on?
  • Can we get a picture with the batteries in view?

#3

I have used the multimeter everything is connected but when I use it over the xt90 no voltage goes through it and 44 volts going through the xt60 (charging port). but when I connect the two balance ports of the batteries together with my adapter. The xt90 connector has 22.2 V and same with the xt60 (charging port). But it still does not turn on. My xt90 anti spark hasn’t arrived yet. and here are some more photos


#4

Well there’s your problem You have 1 pair of wires labeld ‘+’ on the xt60 but its actually a + and - from 1 pack. Same goes for the one labled ‘-’. If you take a look at the diagram you can see that they have 2 of the same polarity wire going in parallel to the respective destinations.

Your VESC right now is receiving 2 positive connections.


#5

oh no sorry don’t worry about my labeling but you can see the black wire from the Esc connects to the black wire on the battery in the third photo


#6

Ah I see, it was hidden behind the other wire. Either way, You’re circuit is not complete because the two packs don’t connect in any way. Let me see if I can draft up a fix for you.


#7

but the guy that made that schematic said his worked fine before and had no problems


#8

Yea, but your setup isn’t hooked up according to the diagram, give me a minute.


#9

your wires are not connected the same way as the pictures shows, yours go from one plug to the other in series, I guess that if you close the circuit on the poles of the black plug you will be able to read the voltage correctly on the xt90, also I don’t think you can keep the parallel circuit (charging circuit) close while using the main one (discharging circuit / series) , but I may be wrong


#10

I think my wires are connected fine i just switch the xt60 and the xt90


#11

I think this should do it. Switch the wires as shown. Black wire (circled green) goes to where the Red wire (circled red) should be, and vice versa.


#12

will that still keep it in parallel?


#13

see this diagram (edit: this is for 12s)

http://www.electric-skateboard.builders/uploads/db1493/original/2X/d/d1926c2991d7cb6b0e44273dcd8785f5dd8f8b09.JPG

the one that you’re using doesn’t really shows the connections, then you can join the xt60s and the balance leads in parallel


#14

Yes, though 1 more change you need to do is short the connections on the XT60, it’d be easier if you just scrapped the XT60’s and soldered the wires together instead.


#15

are you sure because i want to be able to remove them just in case and not have to solder them out


#16

i see but that is in series


#17

Yea, I’m pretty sure, but like I said the XT60’s have to either be shorted, or removed altogether.


#18

oh you want 6S in parallel? I thought you wanted 12S, than that’s easier


#19

okay I will do this change tomorrow and I will let you know how it goes. Thank you so much btw


#20

thank you for your help anyways