This is a great forum and I am glad I found it!
I am working on a 4wd remote control mower build. Here is what I have:
20 hp electric start briggs gas engine
2 battle switches
sabertooth 2x60 motor controller
2 x wheel chair motors
This is the second remote mower project, the first one turned out great but it did not have electric start or electric deck adjustment. I need help figuring out how to wire the starter to start the gas engine via the remote. I also need help wiring an electric screw jack to be able to adjust the deck height up and down via the remote control. Any help would be GREATLY appreciated.
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if using a 25 amp darlington switching circuit you will need a good size heat sink
IRFZ44 mosfet is so simple to use ,it hooks the same as switching darlington circuit and resistor value is same,and no heatsink is needed,plus no power is wasted
i see i am not the only one that doesnt use spell check and RICH has said to me a few times
One extra hint that I have used to help people who sometimes have trouble communicating in writing.. Read your posts out loud before you hit send and make sure they sound right. It can help when you are typing so fast you get your words out of order. Just reading silently doesn't seem to do it, but reading out loud you actually hear yourself and can notice more. (I planned on telling you this privately when I asked you to email me a few weeks ago, but you wouldn't, so here it is...).
Thanks for your recent information on mosfets. It led me to look up some information and they seem to be very useful.
This forum is first time i did any writing in over 20 years,never really had the need too.
I have a lot of work and dont really have the time to recheck my spelling or grammar and some is not needed ,like periods and capital letters
But my posts are getting better ,and most likely to make easy to understand them will do a few posts and not put many words in them.
Also of my words i use are very technical and most here dont know what it meens.
like RDS on mosfets not many knows what it meens .
MOST think i am wrong on the mosfets,yet i know more about them then most of the guys here .
Sorry to hear that you fried the battle switch. Did you ever identify a solution? Please post! I'm trying to do something similar. Thanks
However servo City has a good selection of wheels and tires that may be what youe looking for:
Off Road Rubber Tires
I have been playing around with the idea of another motor controller to operate the starter. I don't need the pwm though. A relay would probably be best, I know. Obviously, since the mower already has one, It's a matter of actuating it until the engine starts, then shutting it down. My system uses a 6v battery to start it. I can't tell you the amperage; haven't found any specs on it , and I haven't tested it yet. I am wondering if a LM298 motor controller could be used to actuate the relay? Especially since it is only 6v. Hearing he blew the battle switch, I'm afraid to try it on mine.
I haven't tried anything as of yet, due to lots of overtime at work and waiting for parts to arrive. But tomorrow I'm off and that is one of my top projects. I'm going to try the LM298 to see, unless someone has a better idea.
I am not sure how @real57vetteguy had his wiring hooked up but seems to me the Battle Switch should work fine to pull in the solenoid coil. The Battle Switch contacts are rated high enough to be used to activate the coil of the solenoid.