Castle Creations Field Link Portable Programmer for Driving

Works great for on the fly changes.You can program a Castle ESC with your transmitter, but it becomes a bit of a hassle. It's easy to do, just time consuming and not really very "quick." The Field Link, on the other hand, is about as quick as it can get. Plug it into the throttle lead on the ESC, make your adjustments via the button on the Link, turn the ESC off, unplug the Link, and you're good to go with your new settings.One reviewer mentioned just borrowing one, and I would second that...especially if you're just someone that RCs for fun and doesn't really need to mess around with changing settings very often. However, if you're like me and live two hours away from your closest RCing friend, then having one around is well worth the cost.It's a good product that works well. Recommended.

Works great and is easy to use

I got this for my castle sv2/5700kv. It comes with a usb cable which connects it to a computer also. The card itself programs the sv2 very easily. If you really wanna adjust and tweak the various functions of the esc just connect the esc to the card and the card to a usb port on a computer via the supplied cable. You will have to go to castle creations website and download the free software. I actually had to download the software twice. It worked better for me to download it right to my desktop and then install it from there for some reason. (I'm not very good with computers) But now that Ive installed the software I can really adjust any aspect of the esc I want to. Probably a must have for castle esc's...I don't have time to figure out all the beeps, blips, and various led colors that you would have to go through to program the esc with your controller. This just makes it so easy. If I can use this with ease anyone can! Thanks for reading!

Perfect

Works great but feels very cheaply made. I would be willing to pay more for one that came built in a nice plastic case instead of foam with a sticker on the top

The actual device worked exaclty how it is supposed to but for me as a "Back yard basher" I'm not really messing around with my settings - so if you have a freind with one---- I'd just borrow it. This might be different if you race (I wouldn't know) and had to change things frequently due to varying conditions. But the device worked great.

Works great. Fast shipping.

Worked great did exactly what it was intended to do