5V Relay Module 8 Channels
$5.50
A Mini Water Pump (Black) usually refers to a small, compact water pump often used in DIY projects, aquariums, small fountains, or electronic cooling systems. The color black usually just refers to the housing, which is often ABS plastic or another waterproof, durable material.
🔧 General Specs (Typical Mini Water Pump):
- Voltage: 3V, 5V, 6V, 12V DC (depends on model)
- Flow Rate: 80 – 300 L/H (liters per hour)
- Lift Height: 0.5 – 1.5 meters
- Power: 1W – 5W
- Noise Level: Low (ideal for indoor use)
- Color: Black (common housing color, heat-resistant ABS or PC plastic)
✅ Key Features:
- Compact – Fits easily into tight spaces like small tanks or portable devices.
- Submersible – Most models are safe to place fully underwater.
- Energy-efficient – Low power consumption.
- Quiet operation – Great for homes, pets, or projects that require silence.
- Easy to install – Just connect tubing and power source.
🛠️ Common Uses:
- DIY water-cooled electronics or CPUs
- Aquarium or terrarium filtration systems
- Small solar fountains or water features
- Hydroponic systems
- Water circulation for mini ponds or tabletop gardens
⚠️ Things to Watch For:
- Always match voltage to your power supply.
- Not all pumps are food-safe or chemical resistant—only use with clean water unless specified.
- For continuous use, choose one with a brushless motor for longer life.
Do you need help picking the right one for your project or wiring it up with a battery or solar panel? I can help with that too!
You said:
5V Relay Module 8 Channels
ChatGPT said:
The 5V Relay Module (8 Channels) is a widely-used component in electronics and automation projects. It allows microcontrollers (like Arduino, Raspberry Pi, ESP32, etc.) to control high-voltage devices (like lights, fans, appliances) using low-voltage digital signals.
⚙️ Quick Overview:
- Voltage: 5V DC logic level input
- Channels: 8 (controls 8 different devices independently)
- Relay Type: Electromechanical
- Trigger: Typically active LOW (relay activates when input pin is LOW)
🔌 Typical Specs:
| Feature | Value |
|---|---|
| Relay Rating | 10A 250VAC / 10A 30VDC |
| Input Voltage | 5V (from microcontroller) |
| Input Control Pins | IN1 to IN8 |
| Isolation | Optocouplers (for protection) |
| Protection | Flyback diodes, LEDs |
| Size | ~14cm x 5cm |
Why Use It?
- Control AC appliances using low-voltage boards
- Build home automation, industrial control, or smart farming systems
- Isolated inputs protect your board from voltage spikes
Wiring Basics:
1. Power the board:
- Connect 5V and GND from Arduino to the module's VCC and GND
2. Control Relays:
- Connect Arduino digital pins to IN1, IN2, ..., IN8
- Write code to set pins HIGH or LOW
3. AC Side (High Voltage):
- Connect each relay’s COM (common) and NO (normally open) or NC (normally closed) terminals to your high-voltage load.
Be careful with AC wiring — always isolate and follow safety rules.
Example Applications:
- Smart Home: control lights, fans, AC
- Industrial: switch motors, alarms, solenoids
- IoT: remote appliance control via WiFi/Bluetooth
- Timers, schedulers, logic-based switching