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Resolved Resolved by Dunning-Kruger!

Wiring In A Converter

Ok so in preparation for my V4 coming i'm buying last minute things. one thing that's needed is a way to convert the voltage from the board to 5 volts for sensors. This is what a came up with. Yes or no?

User-inserted image

If I missed something let me know.


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#1  

That will work... I myself just spliced some basic LM7805 regs into some servo extension wires "as a simple plug and play" sort of solution... This way I don't need to run multiple wiring to the battery... Where mine regulates power directly from the EZB power pin(s) themselves.

United Kingdom
#3  

@Richard, did you add in any capacitors or was it just the regulator you cut in to the wires?

@Techno, that will work but you may need more than one regulator depending on the max current.

Just an FYI, I've been playing with a regulator board I knocked up about a year ago however halted as I thought EZ-Robot was releasing their own, better, regulator. If there is a demand for it I'll happily post my notes. I can't guarantee it'll work as I haven't built a prototype yet but it's a starter at least. Let me know if it'll be of interest to anyone.

#4  

That will definitely work but may be inefficient. That regulator may get warm, essentially wasting battery power. Again however it will work I will be in the same boat soon also.

#5  

@Rich.... there is a picture of it in this thread link Just the LM7805s.. no caps....

United Kingdom
#6  

Must have missed that when scanning over it...

To be honest I'm not 100% sure what the caps are for, I assume to keep the voltage nice and stable, all I do know is that every LDO regulator circuit I have seen has caps in it.

#7  

Well, i'll let know how well it works as soon as I am able to test it with the V4...The LM7805's data sheet claims it to have a very stable 5v output with a very low dropout voltage... Anyway, I'll let you guys know as soon as I can...

Netherlands
#8  

If the 12-5V converter is isolated, you'll also have to connect the EZ-B ground to the sensor's ground.