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I have looked over your images, and unfortunately I cant see anything else that would cause a problem.
You are correct, as is at the moment adding the 4ch to the s107 transmitter, removes the ability to trim. (its not too bad on mine, slight clockwise rotation) However i am still looking into it.
The problem I've found so far is trying to calculate a way to skew the central resistance of the stick. Without affecting Full or 0% throttle.
Raptor said
I'm sorry your transmitter seems dead, but if it has been killed, then it shouldn't be a problem removing the left hand stick to mod the S107 transmitter
As you know, I know nothing about this stuff, and I'm probably not using the right terminology, but if there's only one circuit for that function, and the S107 transmitter uses it for the trim, and you are now using it for the S800 drift, there's no way to 'add' a trim. Correct?
Raptor said
I'm sorry your transmitter seems dead, but if it has been killed, then it shouldn't be a problem removing the left hand stick to mod the S107 transmitter(can you upload a few pictures of the back, in as high a resolution as possible, there may be something I've missed)
If you can get a working trim I will mod a 107 transmitter.
These are as good as I could get. Thanks!
I'm sorry your transmitter seems dead, but if it has been killed, then it shouldn't be a problem removing the left hand stick to mod the S107 transmitter
(can you upload a few pictures of the back, in as high a resolution as possible, there may be something I've missed)
Yes the green and yellow wires are soldered directly onto the back of the white socket pins. If the channel is reversed just flip the wires over.
I'm still working on making a trim for the steering (mine slowly but constantly turns clockwise )
Raptor said
I'm not sure what went wrong with your transmitter, but try not to leave the battery's in anything while working on them.Are you having any luck with the transmitter yet, or is it still dead?
I thought about the batteries somewhere along the way and was just lazy. So I deserve it. It's still dead.
I'm glad to hear that it works. I'm not sure what went wrong with your transmitter, but try not to leave the battery's in anything while working on them.
Are you having any luck with the transmitter yet, or is it still dead?
If you don't like the S800 transmitter, the S107 transmitter can be converted into a 4ch transmitter, by using parts from a S800, and 2x S107 transmitters (however i still need to look into getting a trim working on the steering and yaw.)
Nice placement of the Pot 🙂
For the 10K pot:
With the pins pointing down and the 5-pin edge facing toward you. Connect the Black wire to the far left pin (Pin 1), the red wire to the far right (Pin 5), and bend the pin second from the left, onto the far left pin.(Pin 1 bent onto Pin 2)
i.e. Black wire - Pin 1, Red wire - Pin 5, Pin 2 connected to Pin 1.
the Pinout for the 10K pot:
Place it with the pins pointing down and the 5-pin edge facing toward you. From left to right, the pins are:
1) Common (GND)
2) R1 Wiper (Out 1)
3) R2 Wiper (Out 2)
4) R2 End (In 2)
5) R1 End (In 1)
It should be fine if you touch that chip for anything up to 30 seconds . If you only caught it with the iron, then it should be OK.
I think I can see the problem, you may have bridged a few pins with solder. Have a look to make sure that no solder is connecting the pins between the red lines. (if the top one is shorted, it would stop the transmitter from turning on)
The potentiometers you have aren't ideal however they should be useable.
- The 10K potentiometer will allow you to adjust the throttle power between 0% to ~60% (this should be OK as mine is set to ~50%)
- The 100K potentiometer will allow you to adjust the throttle power between 0% to 99% however only 0/4 to 1/4 of a turn will be any use to you.
i.e. for ~50% throttle it would need 1/8th of a turn.
The central pin is connected to either of the other pins on the left or right.
I hope this helps
p.s. can you send me a closeup of your board, i may be able to see what has gone wrong.
I assume that you have also tried to fully remove the mod?
Thanks Raptor! Somehow, I fried the board . It will not turn on. BUT, I have another, LOL. Back to Mode 4 for now .
Here's what I have.
10k Potentiometer
100k Potentiometer
If neither will work I'll have to go somewhere else. Radio Shack only had one 25k and it was huge. I have no idea where to put the wires on these things for the throttle cap. Do I need more than two on the pots? I know from your pic where two wires go on the circuit board. Any help appreciated!
bvc said
1) Does it matter what "k" the potentiometer is for throttle control?2) Isn't the trim on the S107 remote a potentiometer? Could this be used?
I used the S107 trim knob on the S800 for throttle control and all it gave me was (I'm guessing) 50% power. Probably because of the type of potentiometer. Spitter or something. It was worth a try.
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