Hardware Features – Screvle Handheld
ARM Cortex-M4F Microcontroller
Screvle uses an STM32F427 running at up to 180MHz.
Flash: 1024KB
RAM: 256KB
QVGA (240x320) Touchscreen
The LCD is connected via a 16-bit parallel bus for high speed updates.
The backlight can be dimmed.
10/100 Ethernet
Ready to use 10/100 Ethernet via RJ45 connector. The Ethernet circuit uses the on-board Ethernet MAC of the CPU for optimal performance.
Two LEDs show the status of the Ethernet link.
Wi-Fi Module
Station and Ad-Hoc mode
Micro-SD Card Slot
Expand the persistent storage of Screvle by adding a micro-SD card.
FAT32 filesystem support.
USB connection
Micro-USB connector connected to the USB-OTG Full-Speed core of the CPU turns Screvle into a USB Device or USB OTG Peripheral.
The expansion header allows access to a second USB-OTG core of the CPU for USB Device, USB Host or USB OTG functionality.
Battery power
Screvle features an integrated Li-Polymer Battery allowing mobile operation. The battery can be charged through the micro-USB connector or via the expansion header using external power.
Real-Time Clock with battery backup
Screvle has a real-time clock operated by a separate low-power 32 KHz crystal and a coin-cell holder for keeping track of time when Screvle is not powered.
5-Way Navigation Button
Equipped with a 5-way navigation button (up, down, left, right, center switches) for easy navigation through user interfaces.
LED
RGB LED connected to PWM enabled pins allows you to create almost any color.
Buzzer
Sound an alarm using the buzzer.
Flexible Expansion Header
Customize Screvle hardware by adding an expansion board. All embedded interfaces are available via the expansion header (GPIO, UART, I2C, SPI, CAN, ADC, DAC, PWM,…) as well as power inputs and outputs.
Hardware Features – Screvle Mini
Ultra Low-power ARM Cortex-M4F Microcontroller
Screvle Mini uses an ultra low power processor STM32L496 running at up to 80MH.
Active power consumption of 100µA/MHz.
Flash: 1024KB
RAM: 320KB
LoRa module
Low-Power Wide Area Network module, capable of 2-way communication over distances up to 15 km.
Excellent noise immunity and able to penetrate deep into buildings.
Internal sensors
The Screvle Mini main board has an acceleration sensor (9-Axis Gyro+Accel+Magn), a temperature sensor (+/- 0,2 °C accuracy in -20°C tot 60°C range) and a humidity sensor (+/-3% accuracy in 10-90% range) on-board.
Micro-SD Card Slot
Expand the persistent storage of Screvle by adding a micro-SD card.
FAT32 filesystem support.
USB connection
Micro-USB connector connected to the USB-OTG Full-Speed core of the CPU turns Screvle into a USB Device or USB OTG Peripheral.
Battery power
Screvle features an integrated Li-Polymer battery allowing mobile operation. The battery can be charged through the micro-USB connector.
Optionally, the Li-Polymer battery can be replaced by an AAA alkaline, or an LiSOCl2 battery.
Real-Time Clock with battery backup
Screvle has a real-time clock operated by a separate low-power 32 KHz crystal and a coin-cell holder for keeping track of time when Screvle is not powered.
Push Button
Screvle Mini is standard equipped with 1 push button.
LED
Screvle Mini has 1 bicolor LED.
Flexible Expansion Header
Customize Screvle hardware by adding an expansion board. All embedded interfaces are available via the expansion header (GPIO, UART, I2C, SPI, CAN, ADC, DAC, PWM,…) as well as power inputs and outputs.
Hardware Features – Cellular Addon
LTE-M / NB-IoT / GPRS
LTE-M / NB-IoT: B1/ B2/ B3/ B4/ B5/ B8/ B12/ B13/ B18/ B19/ B20/ B28 / B39 (for Cat M1 only)
GPRS: 850/900/1800/1900Mhz
GPS
42-channel GPS L1 C/A code receiver with Horizontal position accuracy <2.5m CEP.
Active GPS antenna (internal or external)
RS-485
Industrial I/O s
3x Digital/Analog Input
3x Digital Output (optionally via Solid State Relay)
CAN Bus
32V Power Input
Screvle Handheld, Industrial and Mini hardware is extendible using expansion boards, allowing development to start from technology that stands close to the final end-user solution.
The expansion header consists of three 12×1 pin headers. Pins are spaced 2.54mm apart (100mil).
The three headers are positioned in a U-shaped area of 38.10mm (1500 mil) by 33.02mm (1300 mil).
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