fireworks1
New Member
Hello guys.
I'm brand new to this forum and quite new to electronics itself.
I have quite basic, fundamental knowledge but am acquiring some help
from genuine electronics people..
I live in Australia and as apart of our secondary school subjects, we have a
subject called systems engineering. In this class, we are asked to build a
system that consists of both an electronic and mechanical sub-systems.
I have opted to build a digital tachometer and to get a reading, I have decided to build a signal generator that is made up of a 12v DC Motor, that rotates a blade through a sensor and is able to generate a reading.
So far I have attempted building an opto-isolator circuit consisting of an
IR LED and a phototransistor. The problem exists in how I would be able to
turn this into a pulsating output signal that would be able to replicate or simulate a running motor and generate a reading on the tachometer. Would I need some sort of PICAXE Chip that would do this? An encoder? A driver? I'm not sure what to do.
Any help would be greatly appreciated
I'm brand new to this forum and quite new to electronics itself.
I have quite basic, fundamental knowledge but am acquiring some help
from genuine electronics people..
I live in Australia and as apart of our secondary school subjects, we have a
subject called systems engineering. In this class, we are asked to build a
system that consists of both an electronic and mechanical sub-systems.
I have opted to build a digital tachometer and to get a reading, I have decided to build a signal generator that is made up of a 12v DC Motor, that rotates a blade through a sensor and is able to generate a reading.
So far I have attempted building an opto-isolator circuit consisting of an
IR LED and a phototransistor. The problem exists in how I would be able to
turn this into a pulsating output signal that would be able to replicate or simulate a running motor and generate a reading on the tachometer. Would I need some sort of PICAXE Chip that would do this? An encoder? A driver? I'm not sure what to do.
Any help would be greatly appreciated