Mikroe MIKROE-3409 Analog Key Click
Mikroe MIKROE-3409 Analog Key Click contains six tactile pushbuttons to select one of six voltage levels. The Mikroe click's six resistors form a voltage divider. The resistors are connected in series between the VCC and the GND. Each button selects one of the six middle taps, allowing six different voltage levels to be selected. The voltage is available at the AN pin of the mikroBUS™, which is additionally protected by an operational amplifier configured as a buffer. This allows protection and a proper impedance at the microcontroller's analog input pin.
Features
- On-board modules
- KMR221, a tactile push-button by CKSwitches
- OPA344, a low-power operational amplifier from Texas Instruments
- Analog keyboard requires a single MCU pin, high-quality buffer op-amp, rubberized tactile pushbuttons with very high endurance and low ON resistance, and more
- Analog interface
- Voltage input 3.3V, 5V
- Click board size L (57.15mm x 25.4mm)
Applications
- Ideal solution for different applications controlled by discrete voltage levels
- For applications that have a restricted number of free pins, including password terminals for small alarm systems
- For selecting an option in various embedded applications
- For all kinds of small DIY projects where low pin count is a big concern
Overview
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Pubblicato: 2019-03-13
| Aggiornato: 2023-09-15