RKEY kapacitive sensoren er 51 mm X 51 mm, der giver nem at bruge ikke-mekanisk berøringsskifte til miljøforseglede miljøer og interaktive displays som musikafspilningsstationer.
RKEY kapacitive sensoren er selvkalibrerende og yderst robuste for de hårdeste miljøer.
RKEY kan monteres bag forskellige materialer - plast, træ og glas til en maksimal tykkelse på 10 mm.
Driftstemperaturområde på -40 ° C til + 85 ° C er det velegnet til forskellige ekstreme omgivelser.FEATURES
- Detection depth of up to 0.4" - recommended maximum
- 2" x 2" (51mm x 51mm) size, 1.5" x 1.35" (38mm x 34mm) key area
- -40C to +85C industrial temperature range
- Self-calibrating
- Internally de-bounced
- Logic levels (+5V output/input)
- User controllable LED
- Maximum durability when mounted in sealed environment
- Works under wood, plastic, glass, fabric, etc
| Features | |
|---|---|
| Power Source | 1.8V to 5.5V |
| Supply Current | From 17 μA (1.8V) to 80 μA (5.0V) |
| Physical Size | 2 in x 2 in (51 mm x 51 mm) |
| Logic Output | High on Touch/Proximity |
| Maximum Panel/Overlay Thickness | up to 0.4 in (10 mm) plastic |
| Start up time | 100 ms |
| Recalibration time | 100 ms |
| Operating Temperature | -40°C to +85°C |
| RoHS Compliant | Yes |
- Auto-calibration on power-up for panel/overlay thickness
- Ultra low power operation - 80 μA @ 5.0V
- Power can be controlled by microcontroller logic pin (for forced recalibration, if needed)
- Separate LED from detection circuit - for complex feedback
- LED can be connected to output, for simple feedback
rKey Connectors
| Pin Label | Pin Name | Notes |
|---|---|---|
| V | Vcc | Supply Voltage: 1.8V to 5.5V |
| L | LED Anode | Through 330 Ohm resistor |
| O | Output | 0V when idle/low Vcc when triggered/high |
| G | Ground | 0V, Ground |
rKey Overview
The rKey Capacitive Touch Key Module is an easy way to add user input to your project.
- Auto-calibration
- The rKey auto-calibrates on power-up to maximize effectiveness through whatever panel material and thickness is used (up to 0.4”/10mm).
- Durable
- Because there are no moving parts, and the rKey can be mounted behind a sealed panel, possibility of physical damage is at a minimum.
- Low Power
- Using break-through technology, the rKey uses extremely little power to detect touches. At 5.0V, less than 80 μA are needed.
- Separate LED control
- To have complex visual feedback, the LED on-board the rKey can be controlled separately by a microcontroller. For simple touch feedback, the rKey output can be connected to the LED input.
Absolute Maximum Ratings
| Operating Temperature | -40°C to +85°C |
|---|---|
| Storage Temperature | -55°C to +125°C |
| Maximum Operating Supply Voltage | 6.5V |
| Maximum LED Pin Voltage | 7.9V |
| Maximum Continuous Output Pin Current | 20mA |
WARNING: Exceeding values beyond these absolute maximum values may cause permanent damage to the device! Operating at absolute maximum rating conditions for extended periods may affect device reliability.
DC Characteristics
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Power Supply Voltage | 1.8 | 5.5 | V | |
| Power Supply Current | 17 (@1.8V) | 80 (@5.0V) | μA | |
| Logic Output Low | 0.5 | V | ||
| Logic Output High | 2.3 | V |
rKey Timing Characteristics
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Start-up Time | 100 | ms | ||
| Response Time | 100 | ms |