I would like a board with 16 inputs (or an option for 32 inputs). I would like to be able to configure the inputs to accept 1. PT100 temperature probe 2. J Type thermocouple 3. K Type thermocouple 4. Thermistor temperature probe 10k at 25C 5. 0..10v I would like a muliplexer chip so that I can then select an input for the boards output. I would like to be able to configure the voltage of the output to be 0 to 5v or 0 to 3.3v. Power supply to be 24vdc With regards to the 0 to 10v input. The source can be a frequency drive and can therefore create noise interference. Therefore would it be practical that these inputs are on a seperature board or isolated in someway so that the noise does not transfer to the board. Currently this board will be connected to an Arduino Mega. Experience from our own proto type is that communicating the output with a voltage is also susceptible to noise. Therefore would it be better to communicate using a bus method such as SPI, If your proposal can consider this then we would also require C# code to assist for integration into our proto type system. Input/Output terminal, channel select and power to be screw terminals.
16 freelancers are bidding on average $1247 for this job
We are a team of skilled professionals with more than 20 years of experience in electronics. Please respond: does you project require actually building mulitplexer or just PCB design?
I have many projects with a PIC that i have solution [url removed, login to view] expertises for a [url removed, login to view] PIC 18F4620 it´s a similar project. Andre