sensors

Sensors/PT100-MAX31865/code/code.ino

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+#include <Wire.h>
+#include <Adafruit_Sensor.h>
+#include <Adafruit_MAX31865.h>
+
+// Use software SPI: CS, DI, DO, CLK
+Adafruit_MAX31865 max31865 = Adafruit_MAX31865(D8, D7, D6, D5);
+
+// The value of the Rref resistor. Use 430.0 for PT100 and 4300.0 for PT1000
+#define RREF      430.0
+#define RNOMINAL  100.0
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println("Starting MAX31865 Test");
+
+  if (!max31865.begin(MAX31865_2WIRE)) {
+    Serial.println("Could not initialize MAX31865. Check wiring.");
+    while (1) delay(10);
+  } else {
+    Serial.println("MAX31865 initialized successfully.");
+  }
+}
+
+void loop() {
+  uint16_t rtd = max31865.readRTD();
+  float ratio = rtd;
+  ratio /= 32768;
+  Serial.print("RTD value: "); Serial.println(rtd);
+  Serial.print("Ratio = "); Serial.println(ratio, 8);
+  Serial.print("Resistance = "); Serial.println(RREF * ratio, 8);
+  Serial.print("Temperature = "); Serial.println(max31865.temperature(RNOMINAL, RREF));
+
+  delay(1000);
+}

Sensors/PT100-MAX31865/readme.md

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+# PT100-MAX31865_temperature_sensor
+
+# ESP8266 with MAX31865 and PT100 Temperature Logging
+
+This project demonstrates how to use an ESP8266 microcontroller with a MAX31865 amplifier to read temperature data from a PT100 sensor. The data is logged and displayed using the Serial Monitor.
+
+![Progress Badge](https://badgen.net/badge/progress/DONE/green?icon=github)
+
+## Hardware Required
+
+- ESP8266
+- MAX31865 (2/3/4-wire configuration)
+- PT100 sensor
+- Jumper wires
+
+## Wiring
+
+### MAX31865 to PT100 (Two Wires)
+- Connect one wire of the PT100 to `RTD+` on the MAX31865.
+- Connect the other wire of the PT100 to `RTD-` on the MAX31865.
+- Connect a jumper between `RTD-` and `F-`.
+
+### MAX31865 to ESP8266
+- `VIN` to `3.3V/5V` on the ESP8266
+- `GND` to `GND` on the ESP8266
+- `CLK` to `D5` on the ESP8266
+- `SDO` to `D6` on the ESP8266
+- `SDI` to `D7` on the ESP8266
+- `CS` to `D8` on the ESP8266
+
+## Software Setup
+
+1. Install the Adafruit MAX31865 library:
+   - Open the Arduino IDE
+   - Go to Sketch -> Include Library -> Manage Libraries...
+   - Search for "Adafruit MAX31865" and install it
+
+
+Special thanks to Kunal Patil for their valuable contributions to this project.
+(https://github.com/Gamerboisoap1)
+
+

Sensors/readme.md

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+## Guidelines for Adding a New Sensor
+
+1. **Create a Subfolder:**
+   - Name the folder after the sensor (e.g., `PT100`, `DHT22`, `BMP180`).
+
+2. **Add a README.md:**
+   - Provide an overview of the sensor.
+   - Include wiring instructions.
+   - Describe the code examples and how to use them.
+   - Link to datasheets or other relevant documentation.
+
+3. **Include Source Code:**
+   - Add example code files demonstrating how to interface with the sensor.
+
+4. **Add Schematics:**
+   - Include wiring diagrams or schematics if applicable.
+
+5. **Documentation:**
+   - Add any additional documentation, datasheets, or useful resources.
+