In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JesseMassey wrote:

Hello,
Well I am on my newest project with the SX28AC, this time I am building a controller for a Genie Lift. The old one fried and cost a lot to replace so I figured I could build a new one for cheap with a SX.

 

I am using the SX to switch four hydraulic valves on and off, and to switch a motor on and off. The valves require about 1 amp at 24 VDC to open them. To drive the hydro valves I am using a TIP120 Darlington Transistor, the TIP120s are driven by a NPN switching Transistor, and finaly the switching transistor is driven by the SX chip. 

 

The motor is switched on and off with a large solenoid(think automotive style), this solenoid is driven by a smaller solenoid and it is driven by a NPN switching transistor.

 

Anyway I figured I would pass this by you guys and see what you think. As you can see I don't know a lot about hardware, I have always focused on software side of things but this project was presented to me and I have to do it.

 

Here is an incomplete schematic of it. I have hooked it up but have yet to test it with a real load.

 

thanks,

 

Jesse

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