I am going to attempt to control a hydraulic valve that is currently flow controlled using a analog potentiometer. I would like to adjust the amps to the solenoid based on ground speed using a GPS module.
I’m a beginner but feel capable of pulling this off if I get started in the correct direction.
First off is this possible?
Can I use the Arduino Uno and a GPS sled to make this possible?
Would there be any other equipment I should need. I am guessing a LCD or android app may be in order.
PWM usually works well to control loads.
The use of a GPS tells me nothing. The logic to calculate the PWM value can be made based on any device value.
LCD?
Android app?
My tractor is only a few years old and does not have a speedometer. Needless I want to control the RPM of a drive shaft on the attachment in relation to the speed of the tractor/implement.
Practically I’m driving a corn planter main shaft and want to be able to control plant population based on tractor speed. There is a bit more to it than that but that’s the practical application.
What is the variation in tractor speed, a few mph overall?
And what's the range of the corn planter volume?
Speed is in whole numbers (no decimal places, the granularity is coarse).
It's possible - but maybe not to the degree that you require.
What kind of unit is "Ma"? Mega of what?
What kind of electrical load is the corn dispenser? Volt, Ampere......
A GPS needs to move some distance before it delivers a useful reading.
Sorry for not posting back to some of these questions sooner. I am working on this application now and am seeing some success. The tractor will operate at 3.5 to 4.5 MPH. I am having success with the GPD module getting fairly accurate readings. I can usually see 9+ satellites. A 1/4 MPH adjusted the planting by 640 seeds. This is within tolerance, even twice that would be fine. Its about averages when using older farming technology. The Ma is milliamps.