If I’m looking at a total of about 52 feet of cable, what flavor of power adapter do I need to get a full 5V 2A through it? I thought I had a problem with my motors, but when I plugged in batteries to the board, it ran without a problem. My guess is I’m losing something over the cable.
Are you trying to operate the DFRobotShop Rover via wires over 52 feet long or is this for a different project?
You can measure the resistance of your cable and then infer how much voltage you are loosing using V=RI
However, the losses will change depending on how much current the load is consuming (I) so you might need to provide a higher voltage and regulate it on the receiving end.
Based on an calculator estimate and some napkin math, I’m guessing I may be losing somewhere around 20% of it.
Do you guys sell any good solutions for a power regulator for my DFRobotshop Rover V2? I definitely need 5V out of it, and it needs to be able to draw 2A.
Would something like this be what I need? robotshop.com/en/pololu-step-down-voltage-regulator-d15v35f5s3.html
And then perhaps a power adapter like robotshop.com/en/12vdc-3a-wall-adapter-power-supply.html on the wall end? I’m guessing the voltage drop isn’t going to be dramatic enough to take it down 7V?
I haven’t done any testing on the cable as of yet, I’m hoping to find time to get out the multimeter this week.