I want to connect a simple TDS meter with Arduino. I have a tds meter there are I2C as well as UART points on its pcb. I tried with I2C scanner but no device found. I see a mcu AIP8f2032 on board. Is there any way to get data from above device. There is no data sheet of above said MCU
Have you tried the Serial connection ? It will need some experimentation as to baud rate but will be easy to test
NOT a mcu! AiP8F2032 32KB Flash ROM
Device specs or link please.
Mi tds meter
Kindly send test code
If it is this device, I see no serial or i2c output.
https://store.mi.com/in/item/3192900018
If there is a circuit board inside the device with these outputs, how are you accessing it? Do you have a schematic for the board?
No schematic saw tx rx and scl sda points on pcb
How do you know they are connected to anything and that the firmware of the device is sending anything to them? Do you have a scope or logic analyser?
I tried with I2C scanner but no device found.
With the two LR44 batteries it looks like a 3v device. What pull ups did you use on the i2c bus. What Arduino are you using. 3v may not read as HIGH on a 5v Arduino?
Let's have a look at some clear photographs of both sides of the PCB showing any markings on the components, and also the TDS sensor head insofar as it's possible to photograph it.
Btw, the realistic/sensible answer to your question is "no, it's not feasible to get data from the sensor; just get one of the many DIY sensors intended for microcontroller projects and save yourself a load of time and trouble."
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