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USATorque55
06-03-2006, 04:42 PM
I'm having a bit of trouble at a very inopportune moment.

First time experimenting with a place receiver, but I'm much more knowledgeable in the car department. This is the deal:

For a robotics project I'm hooking up two ESCs without battery eliminator circuits to the Parkzone 72mhz receiver. One ESC is going where the rudder would be, the other where the elevator would be. As of the moment, i'm not using anything else with the system, I will be putting more servos in, but i need it to work first.

So I have it wired that the battery connects to both the ESCs. I run one J-Connector to the receiver's battery plug in. I'm confident this would work, but the problem is that the battery plug from one ESC is a JST connector. Still fits in the slot, but the plug is only two wires, and not the third that the receiver assumes it is. I also have no idea which polarity plugs into what.

Basic problem is that the ESC is not reading the radio. My guess is that the battery plug isn't working or something thus causing the receiver to put out no signal. ESC has beeps multiple times until the radio is on. So if I turn on the ESC w/ the battery plug, it doesn't beep multiple times. But as soon as I turn the transmitter on, it goes into the unrecognized beeping mode. I know this isn't its way of programming, but rather its warning that you turned the car on before the transmitter.

I'd appreciate any help, I need this project finished by Monday night. And I'm on a crunch for time.

Thanks,
Torque

rahshadow
07-06-2006, 10:11 AM
Hello, I`m not real sure this will help , but i`ll try. it sounds like you want to run two motors off of 1 receiver, on different channels for seperate control of each motor independently. while you can run power to the receiver through any channel you can only run an esc through channel three( or so i`ve been told) to run two motors you would use a y harness on channel 3 (like in a twin motor plane) but i don`t think that is exactly what you were wanting....? as far as i know channel 3 is the only "throttle controlable channel" the others are for servos. All of this is "as far as i know" knowledge, you may need a specific receiver to do what you want to do. i`m sorry if i wasn`t more help, i`m sure there will be other posts to help you out!

Dave Robelen
07-06-2006, 09:32 PM
Hi Torque,
First, lets back up just a bit. Connect a 4-cell battery to the receiver (no ESC's) and then plug a servo into the channels you want to operate. All OK? If so, you can plug the signal leads of the ESC's into the desired channels, and plug the main battery into the two ESC's with a "Y" harness. Do not try to supply power to the receiver from the ESC's. (The red lead in the ESC signal cable must be disabled for this to operate)
The calibration problem probably comes from the stick(s) being in the middle of their range at start-up. The typical ESC expects to see the channel at one end at start-up, and often moved to the other extreme for arming. Note that with the stick at center, the ESC will be putting out 1/2 of it's full output. Is that what you want?
The point about ch 3 is correct in that it is the only channel (or the throttle channel depending on the brand of your system) that starts at one extreme, and moves from there.
I hope this is some help. Dave