Comments on: ESP32 with TDS Sensor (Water Quality Sensor)

By: faizyu

faizyu — Wed, 19 Jun 2024 23:59:09 +0000

In reply to Baraneeswar. I have the same problem, in my case i want to connect this sensor to blynk or web server. The problem seem to be from wifi, I too haven't found a way to solve this issue.

By: abhishek kumar

abhishek kumar — Wed, 17 Apr 2024 08:34:50 +0000

In reply to Michael McCallum. hlo bro i wwant code in micropython

By: Baraneeswar

Baraneeswar — Thu, 04 Jan 2024 10:27:00 +0000

How can I connect this sensor to firebase? when i try it’s showing 0 constantly. But in serial monitor it works just fine.

By: umer ahmed

umer ahmed — Mon, 25 Dec 2023 08:51:52 +0000

Hello
when i put the probe in water its shows me 89 reading but when i put it outside and clean it and before dipping into water it is showing 2417 reading how to calibrate it thanks.
regards
Umer Ahmed

By: Johnmerry

Johnmerry — Thu, 28 Sep 2023 12:46:04 +0000

Hi, can i change the TDS value from ppm to EC value like (microS/cm). If yes, what are the equation or constants i need to take note of?

By: Edson

Edson — Fri, 02 Dec 2022 15:06:52 +0000

In reply to Sara Santos. Since April, now 2 Dec. What about?

By: Sara Santos

Sara Santos — Tue, 07 Jun 2022 17:10:25 +0000

In reply to F G Marshall.

Great!
Thanks for sharing your experience with the sensor.
REgards,
Sara

By: F G Marshall

F G Marshall — Mon, 06 Jun 2022 19:48:16 +0000

Odd – there should be a hash symbol in front of the second version.

By: F G Marshall

F G Marshall — Mon, 06 Jun 2022 19:47:00 +0000

sudo /home/pi/hydro/ADS1115/testADS1115_P1_oneoff.py
should be

sudo /home/pi/hydro/ADS1115/testADS1115_P1_oneoff.py

Please edit for me if accepted.

By: F G Marshall

F G Marshall — Mon, 06 Jun 2022 19:44:12 +0000

This short test code works on my Raspberry Pi

#!/usr/bin/python3

sudo /home/pi/hydro/ADS1115/testADS1115_P1_oneoff.py

import time
import board
import busio
import adafruit_ads1x15.ads1115 as ADS
from adafruit_ads1x15.analog_in import AnalogIn

Create the I2C bus

i2c = busio.I2C(board.SCL, board.SDA)

Create the ADC object using the I2C bus

ads = ADS.ADS1115(i2c)

Create single-ended input on channel 1 (of 0 1 2 3)

chan = AnalogIn(ads, ADS.P1)
print(“{:>5}\t{:>5}”.format(‘raw’, ‘v’))
print(“{:>5}\t{:>5.3f}”.format(chan.value, chan.voltage))

save to ramdisk for use by my Blassic basic code . . .

(Python 3 is too complex to remember if you only write a few lines per year!)

with open(“/var/www/html/ramdisk/ADSP1.txt”,”w”) as fs:

fs.write(str(chan.voltage))

output –
pi@hydro:~ $ sudo /home/pi/hydro/ADS1115/testADS1115_P1_oneoff.py
raw v
8098 1.012
And that means about 2000 for my 1 gram per litre table salt “standard”