Ratiometric valve controller
Another device in development is a controller board intended mainly for generating the control signal for PVG32 hydraulic valves.
The controller supports both 12V and 24V systems and it has RS-232 and CAN interfaces for communication needs. There are 4 outputs so one module is capable of driving 4 valve sections.
In this module the ratiometric output signals are generated with digital potentiometers. Could compare if there is any difference to PWM generated PVG32 control signal.
The microcontroller used is STR712 from STMicroelectronics so there should be enough processing power for many things…
Also on board is a header with 13 I/O signals and 3.3V + 5V power supplies for additional hardware.