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This project has evolved some , the basic rundown is I'm modding two Omnibots , one a regular the other a larger 2000 model. I will have two ezb kits , rad base idea was thrown out because of so much noise but could go back on the table if the omnibot drivetrain is too weak to pull it.
By jstarne1
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@kevin , the video card power will be disabled when robot is on battery , he is also my pc so when I'm gaming I want to enable the graphics card. Otherwise yes I have onboard video.
some bad news JSTARNE i check the specs on the dc-dc converter you are buying it wont work like you think it will,it 8 volts more on input to get 12 volts out,glad i didnt buy it so for 12 volts out you need 20 volts or more in,check the info on it,it will say that i am looking at making a circuit for dc-dc converter to handle up to 10 amps with 6 -30 in and 3 to 30 volts out ,its called a dc-dc boost converter
@robot maker , the.heavy.duty voltage converters need a 4 volt higher input than output. I purchased them for the.purposes of lowering the 12+ volt system down to 6 volts to power all the high torque servos , which there will be at least 4 , plus I wanted to reduce voltage to drive.motors to 7 or 8 volts so I don't burn them out. Ez b.will get reduced.voltage to 6v as well.
Industry Grade DC 8-40V To DC 12V 10A Step-up&down Converter
Ok I already know I must upgrade power supply , and I was trying to figure out battery management switch from ac to battery. I have descided to go buy a small APC battery backup and.use its brain , it charges batteries when on ac and seemlesly switches to battery when I unplug ac , it also monitors battery and will shutdown before battery is over discharged. This feels like a much simpler setup.
@JSTARNE i designed a few of them ,not a hard design ,switch circuit took a little extra time,plus any current output adjustable,voltage adjustable and cell count adjustable mostly yu are looking at is a simple battery charger that charges the battery ,then shuts of the power when battery fully charged,what bad about that does add some weight to already other weight
idea i have is to use a connector for charging the battery from a seperate battery charger and use low voltage contact plates that robot bumps in to like the neato does or run over a contact plate this way you only need a 12 volt input and not a very big battery and use EZB TO CONTROL THE SWITCHING,solves many problems and have a auto hombase charging design
thinking soon your robot will weight over 100 lbs with all the add-ons maybe more
Alright , I gutted this APC 390 watt unit. It took a standard 12v battery so its a perfect match for my 12v existing batteries . This consist of a 8 inch long charger/ controller.board. a transformer and a relay. This should easily fit inside my base. I identified.that I only need three wires to power my PSU on.the computer. The yellow , blue and green. Yellow hot , blue nuetral , green ground. I also picked up a thermaltake 450 watt switching power supply. This sock came with a data interface to change profiles as soon the power changes to battery. This triggers the deactivation on the nvidia graphics card to greatly reduce current draw.Here is my power supply I picked up today , thermaltake a good brand though not my favorite , 430 watt power supply but I'm sure I won't use but 200 - 250 watts even under gaming conditions so this is this is plenty.
I needed Somthing with higher capacity than my current 160 watt.