Hi,
I currently am working to recreate a non-invasive glucometer for my school project. I already have the materials but I only have a piece of very limited knowledge on how to code. Here's the list of materials I have:
Microcontroller: Arduino UNO
Emitter: Everlight IR333A
Sensor: Everlight PT33C
Bluetooth: Hc-05
Display: 16x2 LCD
GSM: Sim800l
Amplifier: INA122
What other materials do I need?
Here's how it should work:
After detecting the reflected light from the LED, the sensor would send values that can be used for measuring glucose levels. These data will also be seen and stored in a customized Android application. If the measured levels are less or above a range, there will be an SMS sent to a designated person.
Please send Arduino codes or any recommendations related to my project that I can use as a guide.
Did you design this project? If so, then you must have a plan. What is your plan?
Paul
There is no ready code for this project and You probably know that.
Start getting acustomed to the UNO. Then go for making one item at the time work. Start with the display. Then You have a device to send debug printouts to. The same way You let the UNO handle one more item at the time.
Does the LCD use I2C to communicate? That's a handy way, only using 2 outputs of the UNO.
"What other materials do I need?"
Who knows? you bought a bunch of stuff without having a detailed plan of how they will work. The first thing to do is get your IR hardware working with the uno and see if it produces the results you are expecting. Use the forum Google search function in the upper right of this page to search for the key words of your project. You will probably find many similar previous project discussions and code to get you started.
Seems like you read this:
https://www.researchgate.net/publication/310754628_NIR_Based_Non-Invasive_Blood_Glucose_Measurement
in choosing your IR components.
You'll need a constant current source and an external FET (e.g.) to switch that IR emitter. You're going to need to research and/or empirically determine the emitter power (current) required and the gain of the instrumentation amp. You should check if 10 bits of ADC gives enough resolution for what you're doing.
You'll also need to calibrate your device against a known-good "standard" to derive a polynomial that allows you to say that 'X' ADC counts from the detector == 'Y' mmol/L.