
Linux robot 92

Hi I was wondering what is the best digital voltmeter displayed adjustable step down voltage regulator to use with the ezb v4 when powered by the ez robot 7.4 vdc lipo battery or battery's of a higher voltage. I am planning on buying the ez robot lipo battery but I plan on using higher voltage batteries later on for more power and longer life but I need the right regulator so I don't kill the ezb v4, sensors an servos. Any one know what I should buy? Sorry if I ask a lot of questions I just hate to blow up my equipment before I can us it. Im new to the robotics thing
http://www.ez-robot.com/Shop/AccessoriesDetails.aspx?prevCat=9&productNumber=98
You will always need a 5V regulator for sensors like pings no matter what size battery you are using....
https://content.solarbotics.com/products/photos/7f654958712313246f3e29a35278d71c/med/25500-dscn3970.JPG
https://solarbotics.com/product/25500/
page as reference, it explain powers requirements for the v4. I believe the V4 can go up to 16v. The problem is the power going into the v4 will also get distributed to any device plug into it. The safe Voltage for the V4 with components will be a 7.4v. If you are working on a larger project that require more voltage etc. You will need a voltage regulator for the components (sensors, servos, LED's etc). I personally use this
Voltage regulator. It work well for me.
As has been mentioned, you need a good supply of amps to power periffrals, especially servos. There aren't many regulators/ step down buck converters that will supply the amps you will probably need (as Richard mentioned, 20 amps is a good number to go for). The very few high amp regulators that there are will cost a small fortune.
A better and cheaper option you could use with the correct long lasting voltage and amperage you need, would be to use two (or even three) 7.4 LiPo batteries and connect them in parallel. That way it would cost you less than a high amp output regulator, you still get the same voltage output, and the mAh would be greatly improved giving you longer run times between charges.
Hope that helps.
Just to clarify, ideally what you need to do is to hook up a 7.4 LiPo battery (or two in parallel) directly to the EZ-B (no regulator needed). That 7.4v will power the servos. Where you need to use the 5v regulator is with 5v sensors or motor controllers.
The red pins on the 24 digital ports will deliver the voltage/amps that the battery supplies, 7.4v in this case. Attaching the 5v regulator from the online store to these pins, will drop that voltage to 5v and supply a miximum of 1 amp.
I have to agree with Richard. I'm not sure why you gave me the credit either. He gave you a good answer of using LiPo batteries and sufficient amps needed. I was just adding to what was already answered. But to answer your question to how to connect batteries in parallel, join the batteries Possitive wires together and ground wires together then a single possitive and ground wire from the join to the EZ-B. Here's a quick diagram...
Parallel Adapter
Code:
www.amazon.com/gp/product/B000MXAR12/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1