1×4 Membrane Keypad
The 1×4 Membrane Keypad is a minimal yet effective input solution for embedded and digital systems. Designed for applications requiring a few simple inputs, this keypad features four tactile keys arranged in a single row. Its low-profile, lightweight PET plastic construction makes it ideal for panel integration, prototyping, or interface design in automation and IoT projects.
With its 5-pin ribbon cable, the keypad connects directly to microcontroller GPIOs and can be easily scanned with standard matrix input methods. The rear adhesive backing allows for quick mounting on flat surfaces such as control boxes, plastic enclosures, or robotics interfaces.
🛠 Technical Details
| Specification | Details |
|---|---|
| Keypad Layout | 1 Row × 4 Columns |
| Number of Keys | 4 (typically labeled 1, 2, 3, 4) |
| Operating Voltage | 3.3V – 5V |
| Interface Pins | 5-pin flat flexible cable |
| Contact Material | Carbon conductive ink |
| Mounting Style | Adhesive backing |
| Material | PET plastic |
| Dimensions | ~69mm × 20mm |
| Cable Length | ~85mm |
| Operating Temperature | -20°C to +60°C |
| Lifespan | >1 million presses per key |
💡 Use Cases & Applications
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Menu Selectors: Add as a menu navigator or input selector for small screens or function toggling
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Simple Password Inputs: Ideal for limited digit-entry systems like basic locks or control panels
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Educational Robotics: Use with controllers such as NodeMCU or ESP32 for button-based inputs
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Automation Control: Trigger motor states, relays, or predefined routines in industrial automation projects
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IoT Projects: Integrate with Wi-Fi-enabled microcontrollers for remote input logging or actuation
🛠️ Pair With (Internal Links)
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Power your system with a stable DC Power Supply
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Use with a Raspberry Pi case or mount for clean installations
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Find supporting electronic components such as pull-up resistors or jumper cables
🎥 YouTube Tutorial
🔗 Example integration video: How to Use a Membrane Keypad with Arduino
⚠️ Precautions & Tips
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Avoid crimping or sharply bending the ribbon cable
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Always debounce the key inputs via software
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Mount the keypad on clean, dry surfaces for optimal adhesion
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Protect from moisture and high humidity during use
🏁 Summary & CTA
Simple, reliable, and easy to use—the 1×4 Membrane Keypad is an excellent option for basic control applications or minimalist input systems. Whether you’re creating a smart interface or an automation button set, this compact keypad gets the job done efficiently.
👉 Order now from Electroway and streamline your project’s user input.
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