How to Replace the Soldering Iron Handle on Your Saike 952D SMD Rework Station 🔧

If you're using the Saike 952D rework station, sooner or later, you might need to replace the soldering iron handle due to wear, damage, or inconsistent heating. In this post, we’ll walk you through the unboxing, installation, and testing of a new replacement handle — step by step! 

Replace the soldering iron handle.

📦 What’s in the Parcel?

We ordered a compatible replacement soldering handle for the Saike 952D, and here’s what came in the parcel:

Components required for replacement.

• ✅ 1x Soldering Iron Handle

• ✅ 2x Spare Heating Elements

• ✅ 🔧 Pre-installed Heating Element in the Handle

That’s right — the new handle already comes with one heating element installed, so it’s ready to use immediately. The additional two spare heating elements are a great bonus for future replacements.

🛠️ How to Replace the Soldering Handle

Replacing the handle is quick and easy. Just follow these simple steps:

1. Power Off & Disconnect

Make sure the Saike 952D is turned off and unplugged for safety. Let the existing handle cool down if recently used.

2. Unplug the Old Handle

Unplug the old handle soldering iron.

Locate the connector of the soldering iron handle at the front of the station. Gently unplug it by unscrewing or pulling it out, depending on the model.

3. Plug In the New Handle

Plug the new handle soldering iron.

Take your new handle and plug it into the same port. Make sure the connection is secure.

🔥 Powering On & Setting the Temperature

Once everything is connected:

Setting the temperature.

1. Turn the Saike 952D back on.

2. Switch to the soldering iron mode.

3. Set your desired temperature — we recommend starting at 350°C for general testing.

The station should recognize the new handle and begin heating immediately.

🧪 Testing the New Handle

Test with the solder wire.

Grab some soldering wire and try it out on a small PCB or scrap components. The heating should be consistent, and the solder should melt smoothly. If everything works well, your replacement is a success!

✅ That’s It — You're Done!

With just a few simple steps, you’ve successfully replaced your Saike 952D soldering iron handle. Whether you're a hobbyist or pro technician, this quick upgrade keeps your station running like new.

📦 Where to Buy

Shopee:

1. Soldering Iron Handle
2. Solder Wire
3. Tip Cleaner

Lazada:

1. Soldering Iron Handle
2. Solder Wire
3. Tip Cleaner

Aliexpress:

1. Soldering Iron Handle
2. Solder Wire
3. Tip Cleaner

🎥 Prefer Video?

We’ve also made a video guide showing the entire unboxing and replacement process.

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DIY Intruder Alarm with LDR Sensor | Arduino Security Project

In this tutorial, we’ll build a simple light alarm system using an Arduino Uno and a 3-pin LDR sensor module. This system detects when someone blocks a light source—like breaking a beam—and triggers an LED alert, simulating a basic laser tripwire.

Light Alarm System

🔍 What Is an LDR Sensor?

An LDR (Light Dependent Resistor) is a sensor that changes its resistance based on the amount of light it receives. In brighter light, resistance drops; in darkness, resistance increases. By using the analogRead() function, we can detect the intensity of ambient light. 

📦 What You’ll Need

To get started, you will need the following components:

Components required for this tutorial

✅ Arduino UNO × 1

✅ 3-pin LDR Module × 1

✅ Jumper Wires × 1

✅ USB cable for Arduino × 1

✅ Resistor 220Ω × 1

✅ Breadboard × 1

🛠️ Circuit Wiring

Here’s how to connect each component to the Arduino:

3-pin LDR module wiring

3-pin LDR Module 

✅ VCC → 5V on Arduino

✅ GND → GND on Arduino

✅ A0 → Analog pin A0 on Arduino

LED and resistor wiring

LED and Resistor

✅ LED Anode (long leg) → Digital pin 9 on Arduino

✅ LED Cathode (short leg) → 220Ω resistor → GND on Arduino

The connection between components and Arduino

💻 Uploading the Code

After wiring everything up, connect the Arduino to your computer using a USB cable.  Then, upload the following code, or you can download the code HERE.

int ldrPin = A0;
int ledPin = 9;
int baselineLight = 800; // Adjust based on your lighting

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int ldrValue = analogRead(ldrPin);
  Serial.println(ldrValue);

  if (ldrValue < baselineLight - 200) {  // Sudden drop in light
    digitalWrite(ledPin, HIGH); // Alert
  } else {
    digitalWrite(ledPin, LOW);
  }

  delay(100);
}

Open Arduino IDE and copy-paste the code

The system reads the LDR sensor using analogRead(ldrPin) (range: 0–1023), compares it to the baselineLight value representing normal ambient light, and if the light level drops significantly—by more than 200 units—the LED is activated to indicate an alert.

🧪 Test the System

Once you've uploaded the code and completed the wiring, it's time to test how the system reacts to different light levels:

Place your hand over the sensor, and the LED will turn ON.

Remove your hand, and once the light returns to normal, the LED will turn OFF

📌 Conclusion

This project is a simple and fun way to get started with analog sensors, security concepts, and Arduino programming. You’ve now created a basic light alarm system that responds to interruptions in a light beam—just like a basic tripwire!

📦 Where to Buy

Shopee:

1. 3-Pin LDR Module
2. Jumper Wire
3. UNO R3
4. USB Cable
5. Resistor 0.25W Pack

Lazada:

1. 3-Pin LDR Module
2. Jumper Wire
3. UNO R3
4. USB Cable
5. Resistor 0.25W Pack

TikTok:

1. 3-Pin LDR Module
2. Jumper Wire
3. UNO R3
4. USB Cable
5. Resistor 0.25W Pack

Aliexpress:

1. 3-Pin LDR Module
2. Jumper Wire
3. UNO R3
4. USB Cable
5. Resistor 0.25W Pack

🎥 Watch the Full Video Tutorial

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#Arduino #LDR #Tripwire #SecurityAlarm #ElectronicsProject #DIYAlarm #ArduinoBeginner #arduinouno