Arduino TRE, New Hope Developer micro Arduino-based control. title="Juga menjadi Generasi baru Arduino.
“>Also be a new generation of Arduino.
1-GHz processor power Sitara AM335x, Arduino developers benefit speeds up to 100 times more performance with TRE-based Sitara-processor than they do on the Arduino Uno. This performance opened the door opener for more advanced Linux applications powered. <p>”>Arduino Uno limitations both in terms of RAM memory, disks and processors can now be overcome by Arduino Tre.
Arduino Arduino TRE is a linux-based Sitara-based Arduino AVR processors plus full, while we still can get kemudanan and simplicity experience Arduino software. Integration allows an Arduino AVR Arduino shield TRE using existing ecosystems so that innovators can expand Arduino TRE to develop a range of high performance applications such as 3D printers, automatic and gateways for home lighting automation, telemetry hub that collects data from nearby wireless sensors, and other related applications which requires control of the host plus real-time operation.
In addition, the Arduino TRE is partially the result of a close collaboration between Arduino and the BeagleBoard.org foundation. These open hardware pioneers share a passion for expanding open source development and making technology accessible for artists, designers and hobbyists. Arduino TRE design builds upon the experience of both Arduino and BeagleBoard.org, combining the benefits of both community based boards. Arduino TRE final board will be available within a few months, pending results of Beta Testing Program.
Technical Specifications (preliminary)
|Clock Speed||16 MHz|
|Flash Memory||32 KB (ATmega32u4)|
|SRAM||2.5 KB (ATmega32u4)|
|EEPROM||1 KB (ATmega32u4)|
|Digital I/O Pins (5V logic)||14|
|PWM Channels (5V logic)||7|
|Analog Input Channels||6 (plus 6 multiplexed on 6 digital pins)|
|Processor||Texas Instrument Sitara AM3359AZCZ100 (ARM Cortex-A8)|
|Clock Speed||1 GHz|
|SRAM||DDR3L 512 MB RAM|
|USB port||1 USB 2.0 device port, 4 USB 2.0 host ports|
|Audio||HDMI, stereo analog audio input and output|
|Digital I/O Pins (3.3V logic)||23|
|PWM Channels (3.3V logic)||4|
|Support LCD expansion connector|
The protection resistor (4.7Kohms) and the adjustable (0-50Kohms) are in serial which forms a load resistor RL (4.7-54.7Kohms). The sensorās resistance RS and RL forms a voltage divider. The output voltage on the signal pin could be read by Arduino or MCU via ADC. Given a value of RL , Power Supply Voltage, and output voltage, RS could be derived. Based on the chart provided in the MQ-2 datasheet, RS in clean air under given temperature and humidity is a constantļ¼which is the āinitialā resistance of the sensor named RO. RO of the resistor could be derived from RS. The main job of the calibration is to calculate the RO by sampling and averaging the readings when the module is placed in the clean air. Once the RO is derived, the concentration of target gas could be calculated by using the RS/RO ratio as the input. To achieve more accuracy, a segmented look-up table should be used. However, in the demonstration, a linear formula is used as an approximation to the original curve.