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Hey Guys,
I've been talking over a compatibility issue with the APC-4 and Airtronics receivers with some other members and they remember the old board discussing this problem. Here is what I have discovered so far:
I'm running into strange behavior on my electronics. I thought I had it figured out but now it looks unsolvable. Here's the problem, running the airtronics 7 ch receiver, mtronics ESC, subtech apc-4 and 2 airtronics micro servos. All works well until I try a lost signal (turn transmitter off) test, all 7 channels go totally crazy, absolute 100% interference, peg from one end to the other. I tried some tests, tore everything apart, separated and moved things away from each other on the table, no help. So then I started unplugging things and found the following.
All test are no transmitter signal, lost signal test (with signal everything works fine)
1. It turns out that if I plug in the apc-4 with no servo connected to it, all other channels go nuts (somehow creating noise on signal pin)
2. Plug in micro servo to apc-4, same problem
3. Try different micro servo, same problem
4. Substitute BEC power with receiver battery power, same problem
5. Plug in standard airtronics servo to apc-4, everything works fine.........
6. Conclusion, can't use apc-4 with micro servo..... WHY?
Before you ask, I tried a 10uF filter cap at the power pins of the apc-4 and then at the servo, no help. I tried loading the signal to the apc-4 with some small caps (.1 uF and .22 uF) I had and then with a 1K, 5K, 10K resistor, no change. The only way it will work is with a full size servo?????
Looks like I'll have to run with no apc-4.
Follow up test:
As per Big Dave's suggestion I tried the APC-4 on the Xxtra receiver and it works fine. The problem is it is a 5 ch receiver and I would like to use ch 6 on the transmitter as the ballast control.
The conclusion is the Airtronics receiver will not work with the APC-4 AND Airtronics micro servos.
Anyone have a cure for this (outside of a buying a new receiver)?
I've been talking over a compatibility issue with the APC-4 and Airtronics receivers with some other members and they remember the old board discussing this problem. Here is what I have discovered so far:
I'm running into strange behavior on my electronics. I thought I had it figured out but now it looks unsolvable. Here's the problem, running the airtronics 7 ch receiver, mtronics ESC, subtech apc-4 and 2 airtronics micro servos. All works well until I try a lost signal (turn transmitter off) test, all 7 channels go totally crazy, absolute 100% interference, peg from one end to the other. I tried some tests, tore everything apart, separated and moved things away from each other on the table, no help. So then I started unplugging things and found the following.
All test are no transmitter signal, lost signal test (with signal everything works fine)
1. It turns out that if I plug in the apc-4 with no servo connected to it, all other channels go nuts (somehow creating noise on signal pin)
2. Plug in micro servo to apc-4, same problem
3. Try different micro servo, same problem
4. Substitute BEC power with receiver battery power, same problem
5. Plug in standard airtronics servo to apc-4, everything works fine.........
6. Conclusion, can't use apc-4 with micro servo..... WHY?
Before you ask, I tried a 10uF filter cap at the power pins of the apc-4 and then at the servo, no help. I tried loading the signal to the apc-4 with some small caps (.1 uF and .22 uF) I had and then with a 1K, 5K, 10K resistor, no change. The only way it will work is with a full size servo?????
Looks like I'll have to run with no apc-4.
Follow up test:
As per Big Dave's suggestion I tried the APC-4 on the Xxtra receiver and it works fine. The problem is it is a 5 ch receiver and I would like to use ch 6 on the transmitter as the ballast control.
The conclusion is the Airtronics receiver will not work with the APC-4 AND Airtronics micro servos.
Anyone have a cure for this (outside of a buying a new receiver)?
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