AIM OF MY GRADUATION PROJECT: To build an autonomous real time device to measure the physical and chemical parameters of water using Arduino(an open-source physical computing platform based on a simple microcontroller board, and a development environment for writing software for the board.) Atmega 2560 Microcontroller.
HARDWARE TOOLS FOR MY PROJECT:
Arduino Atmega 2560 development board
4x4 Matrix Keypad
16x2 LCD
Series 2 Zigbee Pair
Physical & Chemical Water Parameters Sensors(Ph Sensor, Conductivity, Dissolved Oxygen, Temperature and level sensor)
Can anyone help me with building a signal conditioning circuit for my sensors to amplify millivolts to volts?
Im using ATMEGA 2560 Development board. I need a circuit diagram for amplifying mv to v. Which OpAmp Shall I use?
Kindly pls reply with a cicuit diagram. it will be a great help.
First you need to tell us what will be generating the millivolt signal you are trying to measure. A thermocouple has different needs (curve correction, cold reference junction, etc) then say a simple load cell bridge sensor which only requires a good quality instrumentation amplifier.
Yes Im doing it at home. But its my Graduation Project work.
How thermocouple amplifiers can b used??
I sent you a link to Adafruit showing a completed module for a thermocouple instrumentation amp. If you look closely at the link, you will see the chip is a MAX31855 which if you will just Google for the PDF, you will be overloaded with details. Also, Wikipedia is a great resource... But always follow the footnotes and verify ... Not everything posted on the Internet is true/accurate.
To get homework help, you must first make an effort: your sketch if a beginning of this requirement. So, pick the sensor type: thermistor, thermocouple, PH make/model, level sensor make/model. Again, you can use Google if your instructor/advisor has not provided a list. For example, Googling 'Arduino PH sensor' gave a page of options.
When you have selected a sensor, download the PDF. Some manufacturers even have best practices and example code. Do not buy a sensor if you cannot find at least sample Arduino code as you do not have the experience to start from scratch. Be sure to search this forum for sample code before you give up or get frustrated.
Pull together your sample code, one sensor at a time, testing as you integrate the pieces. If you need forum help, ask, but be sure to post all the code so it can be reviewed in context.
