Im trying to build and Agro Drone with Pixhawk 2.1 and im facing couple of problems with the pump controller and i have done the wiring and attached the pump controller switch …i have set up the params as for this link http://ardupilot.org/copter/docs/sprayer.html# sprayer but i realized that the pump don’t functioned. I checked the params and fount nothing wrong with ether the params or the with the wiring, I have tried channel 9 and 8. and the servo 9. have any one else come across any similar issue
link to the pump controller is below. kind help is appreciated
Controller
Have you tried the pump controller plugged into a normal RC receiver with a 5v to 6v supply?
What I found is that a lot of PWM switches and relays actually need a 5v signal to work reliably.
The signal output on the Aux ports I have measured at 3.3v.
I haven’t try’d it actually. Because pump need to adjust its RPM speed as the drone speed increases… Ill just give it a try to see if this thing at least turning on. … At the mean time is there any way we can get 5V out from aux channels?
Hey…
It worked with the direct connection to the receiver… Now how can i get the 5v out from AUX rail? at the mean time ill do some research on that as well…cause i need to adjust the pump speed in relation to the speed of the drone…
@hosein_gh that’s not quite right.
In this case, the issue is not the bus voltage but the logic voltage on the signal pin.
There’s a solder pad inside the cube that can be bridged to set the signal to 5V (this is actually the difference between “Cube Black” and “Cube Green”).
// edit: I actually don’t know if that solder bridge effects the Aux levels. @proficnc ?
If you don’t manage to get work your pump controller, then just buy a BRUSHED motor ESC, they usually work with 3v3 signal level, and can control the brushed motor in your pump.
(In the rare case that your pump has a brushless motor, then it is more easy to replace the controller)
Guys Thank You So Much…It Worked… I just jumped a (+) Pin from the empty 5V rail in the RC RX to the (+) pin on the Cube AUX rail keeping the (-) as the common ground, and the pump started to work…
Thank You Soo Much For All The Friends Who Took a Bit Of Your Valued Time To Drop A Workaround …
So Much of Love From Sri Lanka
