I want to test out a brushless RC system within 2S safe parameters, and then go into the danger 6S zone for a few seconds, then go back to 2S. I will of course be using ESCs and motors that can handle the momentary 6S burst.
My question is, via radio control, how would I be able to switch the RC robot from 2S, to 6S, then back to 2S? I have a cheap surface RC gun style 3 channel transmitter and receiver.
The 3rd channel looks like a good candidate for on/off switching, but i'm not sure how to do the 2S/6S switching.
I was originally thinking of using a buck/boost regulator, and have a continuous rotation servo manually spin the potentiometer of the regulator, but that would be too slow, i need instant on/off.
Thanks in advance for any insights that anyone can provide!
Easiest way in my mind would be to use a servo and two micro switches. One switch for the 6S battery to +, the other for the 2S battery to +, common ground. Probably best to use a seperate Rx battery. Only problem is that most brushless ESC need ‘arming’ in some manner. Any way of controlling this by RC is never going to be instantaneous.
Thanks for the advice. I see what you mean about the arming. If i switch from one battery to another, there’s a risk of resetting the ESC. Your suggestion got me thinking, what if I run a 2S in series with a 4S battery? The 2S would be normally connected, and then the servo would switch such that the 4S would connect with the 2S? and thanks for the help!
ossipee
Hey those RC switches that you linked to look like a good idea. Some boards do not have the relay attached. Do you think I would be able to attach a higher amperage relay to those boards? When I look at Brushless ESCs, they can be 20A, 50A, 70A etc, and i think the relays that come with the boards are rated for 10A. I looked up some high amp relays on ebay but it looks like they are activated by 12V, not the 5V that comes out of the BEC of an ESC, or an arduino.
that second link is really new to me, i’ve never thought of using a servo board in that way before, and i actually have two of then lying around from tower mg90 servos that i converted to gearmotors. Thanks!
