Wholesale Pack Configuration
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| Current Shopify option | Wholesale specification | Pack quantity |
|---|---|---|
| Default Title | 50 pcs/Pack | 50 units |
Each pack uses the 10% bulk discount from the aggregated individual-unit price. The compare-at price represents the total of the original individual-unit prices; the sale price represents one complete pack. Product specifications elsewhere on this page describe the individual item unless a section says otherwise.
HS-KEY1B Key Switch Module - Digital Push Button Input Board for Arduino and STEM Projects
The HS-KEY1B Key Switch Module is a simple digital push-button input board for menu controls, mode selection, counters, games, and first Arduino lessons. It gives beginners a clean way to connect a button to a controller without building a switch circuit from loose components.
Use it with the ELAB Nano V3, MB 102 Breadboard Kit, or output modules like the RGB Full Color LED Module. For multi-key input, compare it with the 4-way key switch module already in the catalog.
Mechanical buttons need debouncing in software. Confirm whether the module output is active-high or active-low before finalizing code.
Technical Specifications
| Parameter | Value |
|---|---|
| SKU | HS-KEY1B |
| Product Type | Key switch / push button module |
| Output | Digital button state |
| Interface | Signal, VCC, GND depending on board label |
| Typical Supply | 3.3V / 5V controller systems |
| Host Requirement | GPIO input |
| Use Cases | Menus, counters, start/stop controls, games |
| Software Need | Debounce recommended |
| Mounting | Panel or board mount |
| Signal Logic | Verify active level by testing |
Board Layout & Label Guide
- Button - User input switch.
- Signal Pin - Digital output to the host.
- VCC - Positive supply if required.
- GND - Common ground.
- Header - Jumper-wire connection point.
- Mounting Area - Fix the module to avoid cable strain.
- Debounce Note - Filter rapid contact bounce in code.
- Logic Note - Test whether pressed is HIGH or LOW.
Application Scenarios
1. Arduino Digital Input
Read the key switch digital output.
2. LED Event Output
Turn on an LED when the module is pressed.
3. MicroPython GPIO Monitor
Monitor the digital output from a Pico-style board.
Packing List
- 1 x HS-KEY1B Key Switch Module
FAQ
Q: What is this used for?
A: Digital push-button input.
Q: Does it output analog values?
A: No, it outputs a digital state.
Q: Can I use internal pull-ups?
A: Yes, if the wiring is active-low.
Q: Does it need debounce?
A: Yes.
Q: Can it start a motor or relay?
A: Yes, through controller code and a driver.
Q: Why does it read backward?
A: The module logic may be active-low.
Q: Can it work with ESP32?
A: Yes, if signal voltage is compatible.
Q: What should I test first?
A: Pin mapping, active level, and debounce timing.