What kind is the best to use for its servo board that will run on 7.4v
Printable View
What kind is the best to use for its servo board that will run on 7.4v
mate, no servo board will run 7.4v for very long, anyway it would be geting 6v from the rx anyway.
Even the futaba s3003 servo craig recommends on robotwars101?
i don't know how he manged that, any way how will you get 7.4v to the board without it going to the rx?
it will go through the rx.
does the planet t5 rx have a built in voltage regulator?
7.4v will blow the rx im afraid
yep, maybe you could only have the signal wire going to the receiver and the power wires going to a jst connector and the lipo connected to the jst connector
If the servo can handle it you can connect the full battery voltage to the servo, leave the signal and negative wires and run the reciever through a regulator/ separate battery
To connect to the receiver you would need to take the signal wire and negative because it needs a return path. In donkey we run the receiver through a 7805 voltage regulator (with some capacitors on it) and connect directly to the hpx servos.
http://www.horizonhobby.co.uk/aeroonlin ... smain.htmlQuote:
7.4v will blow the rx im afraid
Voltage Range: Input: 3.5-9.6Volt
So it depends on the receiver specs.
servo voltage hack.
http://www.teamkiss.com/antweight.html
last article.
the receiver he's talking about (planet 5) WILL blow on 7.4v
http://www.cornwallmodelboats.co.uk/aca ... #aP7710200
The heavier one seems to be capable of going to 9v.
Usage I suppose depends on wether the mods to enable the current setup to run a higher voltage weigh more than 0.5 gram.
Oops, didn't realise they more than 1 planet 5 rx!
I've already been running my planet T5 at 7.4v
The original servo board I was using was a HPI SF-1 as I stripped the gears.
Would the Futaba S3003 work on 7.4v?
That rating on Spektrum RX's of 3-9v is bull-poo, I've known people blow them up trying to plug a lipo into it.
When I helped make a 3-Servo lipo ant, I had a voltage regulator that stepped down 7.4v to 6v and powered the receiver, the positive wires from all 3 servos went in before the regulator chip (FET). Spektrum RX's may struggle with that unless you have a large battery and a high rated FET, the one I used was 1.5A.
Thats a big battery for a RX battery
I have a Simon Windisch design voltage regulator, I'll use that to kepp the volts down.
As a very inexperienced roboteer i hooked my planet 5 up to a 9 volt battery and I broke many servos but not the RX, I was using duracell rechargeable batteries btw.