| Price | $6 |
|---|---|
| Category | Others |
| Availability | In stock |
| Delivery | Shipped across Lebanon, or collect from the lab |
This is the HC-35 keypad board, not a membrane pad: sixteen proper tactile pushbuttons in a 4x4 grid on a 61 x 51 mm PCB, with eight red LEDs along the bottom edge for feedback. Three 2.54 mm headers bring out the key matrix, a set of independent key inputs and the LED bank, so you can scan sixteen keys on eight pins or wire a few buttons straight to an input. Four brass standoffs and screws come in the bag.
Key features
- 16 tactile keys wired as a 4x4 matrix - 8 pins to scan
- 8 red LEDs on their own header for feedback
- Second header reads keys as independent inputs
- Runs on 3.2-5V, so Arduino, STM32 and ESP all suit
- 61 x 51 mm board, mounting holes 55 x 45 mm
- Standoffs, screws and nuts included
Details
Specifications
| Model | HC-35 |
|---|---|
| Keys | 16 tactile switches, 4x4 matrix |
| Indicators | 8 red LEDs |
| Interface | 3 x 2.54 mm pin headers (KEY A matrix, KEY B independent, LED bank) |
| Operating voltage | 3.2-5V DC |
| Dimensions | 61 x 51 x 12 mm |
| Mounting | 4 holes, 55 x 45 mm spacing |
| Included | 4 standoffs, screws and nuts |
