I need to make pressure measurement circuit. Output of this circuit must be a variable resistance that must be between 10 ohm and 180 ohm acoording to applied pressure. pressure sensor gives 0- 20 mV output and I amplify it by an instrumentation amplifier to 0 - 5V level and sample it with an microcontroller. After microcontroller stage I must convert this measured value to an resistance value for output because Display circuits reads pressure values as a variable resistance between
10 ohm to 180 ohm. Variable resistance is referenced to ground from one of its terminals. Maybe this design can be implemented without microcontroller.How can I make variable resistance by the means of microcontroller or without using microcontroller
Thanks