Help with bus dash project

S

Stefan22

New Member
Hello there.

I don't have much experience with electronics but I started this project with the bus dash. I have a 24V 10A power source and I have a button that I want to power on and off the cluster. I have some automotive relays that work good as you see in the video but when I connect the + pin to the output of the relay, instead of 24v I get 1V. As you can see it seems like it's charging up or something. When I disconnect the pin of the dash from the relay, the relay has 24V on that pin. Does anyone know why is this happening?

https://streamable.com/4n7pzt

Watch 20240331_145820 | Streamable

Watch "20240331_145820" on Streamable.
streamable.com
 
Solution
Yes, those dirt cheap Chinese croc clip leads are rubbish - they just bend the wire over and 'crimp' the croc clip over it, so it's quite common to get one that doesn't work. Best solution is to 'uncrimp' them and solder the wire back on.

You can easily see which wire is faulty, just measure the voltage across each wire in turn - they should all be about zero volts, in your case the faulty one will read about 23V.
Sort by date Sort by votes
I'd guess that one of the clip leads in the setup has bad connections to the alligator clips.

(Its difficult to be sure of the connections from the video - draw a circuit?)
 
Upvote 1 Downvote
Yes, those dirt cheap Chinese croc clip leads are rubbish - they just bend the wire over and 'crimp' the croc clip over it, so it's quite common to get one that doesn't work. Best solution is to 'uncrimp' them and solder the wire back on.

You can easily see which wire is faulty, just measure the voltage across each wire in turn - they should all be about zero volts, in your case the faulty one will read about 23V.
 
Upvote 1 Downvote
Solution
You were right indeed. One of them sparked inside the clip cover a while ago but I saw that I still had about 24V when I checked the output of the relay and didn't blame the wires. I just connected it with normal wires and it worked. Thanks a lot again
 
Upvote 0 Downvote
You must log in or register to reply here.

Similar threads

O
  • Question
Reading Digital + Analog Data from Sensors / Bus
2
Replies
26
Views
3K
Tony Stewart
E
  • Question
Help with my project please
Replies
13
Views
3K
danadak
S
  • Question
Need help with spst toggle to momentary
Replies
5
Views
2K
crutschow
  • Question
Help with boost converter circuit
2
Replies
25
Views
4K
audioguru
S
  • Question
Help onStar Wars Prop Project how to use 12 and 24 illuminated switches with 3 PP3 9v batteries without the batteries burning up
2
Replies
23
Views
4K
Pommie
P
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…