From 580303dcf9d7a05dd01f45fa857618f24158696d Mon Sep 17 00:00:00 2001
From: Harrison Xu <42680260+Harrison-Xu@users.noreply.github.com>
Date: Fri, 12 Jul 2024 17:51:01 +0800
Subject: [PATCH] fixed a math error and optimized format
---
.../Grove_Sensors/Liquid/Grove-TDS-Sensor.md | 25 ++++++++++---------
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/docs/Sensor/Grove/Grove_Sensors/Liquid/Grove-TDS-Sensor.md b/docs/Sensor/Grove/Grove_Sensors/Liquid/Grove-TDS-Sensor.md
index 648746d5eb3a..97ed968f42b0 100644
--- a/docs/Sensor/Grove/Grove_Sensors/Liquid/Grove-TDS-Sensor.md
+++ b/docs/Sensor/Grove/Grove_Sensors/Liquid/Grove-TDS-Sensor.md
@@ -6,8 +6,8 @@ keywords:
image: https://files.seeedstudio.com/wiki/wiki-platform/S-tempor.png
slug: /Grove-TDS-Sensor
last_update:
- date: 1/6/2023
- author: shuxu hu
+ date: 7/12/2024
+ author: Harrison Xu
---
@@ -62,7 +62,7 @@ It supports 3.3 / 5V input voltage and 0 ~ 2.3V Output Voltage making it easy to
### Play With Arduino
-**Materials required**
+#### Materials required
| Seeeduino V4.2 | Base Shield | Grove - TDS Sensor|
@@ -82,15 +82,16 @@ It supports 3.3 / 5V input voltage and 0 ~ 2.3V Output Voltage making it easy to
+
#### Software
:::note
- If this is the first time you work with Arduino, we strongly recommend you to see [Getting Started with Arduino](https://wiki.seeedstudio.com/Getting_Started_with_Arduino/) before the start.
+If this is the first time you work with Arduino, we strongly recommend you to see [Getting Started with Arduino](https://wiki.seeedstudio.com/Getting_Started_with_Arduino/) before the start.
:::
- **Step 1.** Open the Arduino IDE and create a new file, then copy the following code into the new file.
-```C++
+```cpp showLineNumbers
#define SERIAL Serial
#define sensorPin A0
@@ -104,7 +105,7 @@ void setup() {
void loop() {
sensorValue = analogRead(sensorPin);
Voltage = sensorValue*5/1024.0; //Convert analog reading to Voltage
- tdsValue=(133.42/Voltage*Voltage*Voltage - 255.86*Voltage*Voltage + 857.39*Voltage)*0.5; //Convert voltage value to TDS value
+ tdsValue=(133.42*Voltage*Voltage*Voltage - 255.86*Voltage*Voltage + 857.39*Voltage)*0.5; //Convert voltage value to TDS value
SERIAL.print("TDS Value = ");
SERIAL.print(tdsValue);
SERIAL.println(" ppm");
@@ -124,7 +125,7 @@ void loop() {
### Play With Raspberry Pi
-**Materials required**
+#### Materials required
| Raspberry Pi | Grove Base Hat for RasPi | Grove - TDS Sensor|
|--------------|-------------|-----------------|
@@ -137,6 +138,7 @@ void loop() {
+
- **Step 4.** Connect the Raspberry Pi to PC through USB cable.
#### Software
@@ -159,7 +161,7 @@ nano TDS.py
- **Step 4.** Copy the following code into the file:
-```py
+```py showLineNumbers
import math
import sys
import time
@@ -176,7 +178,7 @@ class GroveTDS:
value = self.adc.read(self.channel)
if value != 0:
voltage = value*5/1024.0
- tdsValue = (133.42/voltage*voltage*voltage-255.86*voltage*voltage+857.39*voltage)*0.5
+ tdsValue = (133.42*voltage*voltage*voltage-255.86*voltage*voltage+857.39*voltage)*0.5
return tdsValue
else:
return 0
@@ -207,8 +209,7 @@ if __name__ == '__main__':
python TDS.py 0
```
-!!!Success
- If everything goes well, you will be able to see the following result:
+If everything goes well, you will be able to see the following result:
```sh
pi@raspberrypi:~/grove.py/grove$ python TDS.py 0
@@ -228,7 +229,7 @@ TDS Value: 30.9311414242
## FAQ
-**Q1#** Limitations of Grove - TDS Sensor/Meter For Water Quality (Total Dissolved Solids)?
+**Q1:** Limitations of Grove - TDS Sensor/Meter For Water Quality (Total Dissolved Solids)?
**A1:** Limitations are as followed: