So i just bought a 8pin board kit and a 5v regulator and googled quite alot but i cant seem to find how to use the 5v regulator all the datasheets show me is schematics. So my question is do i just put it on my board and weld it or i put it on my board weld it then weld my battry holder and wires to it?
What type of 5V regulator?
What type of 5V regulator? Is it a 7805, LM311, etc…? Typically, a 5V regulator needs some supporting capacitors to smooth things out a bit.
Soldering
It is a little difficult to answer your question as you did’t tell us which board you have.
There is lot of stuff on this wonderful website about hooking up regulators. One of the first posts (node 88) is this one https://www.robotshop.com/letsmakerobots/node/88 that can help you get started.
you want to follow the 1st
you want to follow the 1st schematic on page 7 of the datasheet you linked in:
http://www.sparkfun.com/datasheets/Components/LM7805.pdf
it shows a typical application using 2 common capacitors before and after the VR. in the schem, pin 1 is the input on the left, pin3 is the output on the right, pin2 is ground in the center. the caps help smooth out dips in voltage caused by the load, like a reservoir. dont get hung up on cap sizes, just make sure they are rated for the volts you’ll be using, or higher.
screw it to a piece of aluminum to the back, through the hole to act as a heat-sink. depending on your application, it will get hot.
usually a VR will require 2 volts higher on the input side than the output you expect, so if you want 5v output, you want to give it 7v or higher. LDO (low drop-out) versions will allow for less on the input side, such as 6v.
Ok so just to make sure
Ok so just to make sure since english is not my main language and that i dont want to mess up on the first ■■■■ since it takes weeks to get shiped. So i basicly need to put my red and black wires in the correct place on my rv and screw my rv to my board and what does it?
Follow the schematic at this
Follow the schematic at this link as an example and wire up a protoboard and you should be good to go.
You can see an example of a finished design part way down the page here:
https://www.robotshop.com/letsmakerobots/node/4415
Hope this helps you out
\o/
its hard to answer that
its hard to answer that question without knowing everything about your project.
part of learning this hobby is learning to make your own schematic diagram of your projects. its an essential part of the process. even if you dont know how to draw all the symbols properly, at least draw boxes or all the components and label all the components and pins, etc. in short, a schematic shows all the logical connections of all the components, and how the electricity flows through your circuit. dont worry about the actual placement of the pieces. the important thing is to show how all the pieces connect and interact with each other. and label everything. whether you realize it or not, you already have a schematic in your head., so another good reason for doing it, is to get it out of your head, and onto paper so you can concentrate on other things. otherwise you run the risk of forgetting something. this the best way to avoid problems. after you do it, you can stare at it and think about options or consider alternatives.
The best post I’ve seen on
The best post I’ve seen on this site explaining voltage regulators is this one from OddBot:
https://www.robotshop.com/letsmakerobots/node/3880
It explains everythink you need to know to get started with voltage regulation.
I’ve collected a bunch of basic knowledge links that you might find helpful in my LMR Primer post:
https://www.robotshop.com/letsmakerobots/node/26065
Good luck.
Polarity
This is a great tutorial except for one little thing, the symbols on all the electrolytic caps are backwards. The straight bar in the symbol is always positive and the curved bar is always negative. This could be confusing for a “newbie”, especially in a tutorial.
True, but they are at least
True, but they are at least marked + and -, so it is pretty clear what is intended.
Frits, I think you meant
Frits, I think you meant https://www.robotshop.com/letsmakerobots/node/88.
You posted a link for Little8, which is an awesome little robot. ; j