I have a project that I am looking to hire someone to assist me on. At the face it is real simple but Im new and this would be a great learning exercise for me.
I want to increase/decrease the current ( digital POT) to rotate a shaft faster or slower based on the GPS speed the device is moving. The shaft has a high/low magnetic prox. I need to get the shaft RPM set to a "recipe" based on the GPS speed of the Uno.
Yes. There is a master shaft that drives the planter units. The shaft is turned by a hydraulic solenoid. As the tractor and planter increase or decrease speed I need to adjust the current to the solenoid to get an accurate population per acre.
The coding part probably isn't too difficult. Automotive or faming equipment tends to be pretty hostile to micro controllers like Arduinos from an electrical perspective. You will need to defend all the electronic parts from voltage spikes, especially from inductive loads like a solenoid.
OK. I just remember getting a lot of speed error in GPS when trying to do dead reckoning. It's likely to be worse at lower speeds due to position error. I guess if it's averaged over a minute or so it would be good enough.