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Arduino is an open-source electronics platform based on easy-to-use hardware and software. It's intended for anyone making interactive projects. About Arduino and Arduino Projects sharing are appreciated.

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Five Unique Arduino-compatible Boards Reply 2017-02-08 04:35:02
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Bruno

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1. The Screwduino
The Screwduino sets out to banish soldering. It incorporates an Arduino design and replaces the headers and pins with screw terminals. Features:
  • Arduino UNO compatible with Arduino UNO bootloader
  • Select UNO in Arduino IDE to download card
  • Card has no USB connector/chip so you need to use an FTDI download cable or FTDI to USB interface for USB (not supplied)
  • You can also download code via ArduinoISP via the ICSP header
  • 4-pin I2C connector for easy attachment of an I2C LCD display and other I2C sensors (like temperature sensors). Beware there are many different I2C pinouts.
  • Added 10K ohm pullup resistors (R3 and R4) from the I2C SDA/SCL to +5V If the user doesn't want the resistors, they can snip them out of the circuit
  • Uses through hole parts so that it is easier to assemble. The sole exception is the voltage regulator which is surface mount for heat transfer
  • 5mm pitch screw terminal blocks.
  • Reset switch.
  • 7-12V DC on standard 2.1mm DC power connector
  • Power selection jumper (FTDI, Regulator, Screw Terminals)
  • Four (4) good mounting holes that use 4-40 screws and have more than enough clearance for screw heads, standoffs and/or nuts.
2. The LightBlue Bean
The Bean is Arduino-compatible and sets out to offer startups and makers an easier way to develop IoT devices. Features:
  • 3-axis accelerometer
  • Temperature sensor
  • RGB LED
  • CR2032 coin cell battery
  • ATmega 328p
  • 8 MHz clock speed
  • 3V operating voltage
  • 6 digital I/O pins, 2 analog pins
  • Bluetooth LE Peripheral
  • Wireless programming
  • Support on OS X and iOS
  • Including Windows 8 support
Also check out the new LightBlue Bean+ on Kickstarter with even more features.
3. The Qduino Mini
The first tiny Arduino-compatible board with a built-in battery charger and fuel gauge. Great for embedding into super small projects. Features:
  • ATmega32U4 Processor - Arduino Leonardo Compatible
  • 32KB Flash Storage
  • 2.5KB SRAM
  • 1KB EEPROM
  • 3.3V @ 8MHz
  • 20 Digital I/O // 14 Dedicated
  • 12 Analog Channels // 6 Dedicated
  • 7 Digital I/O also PWM channels
  • SPI, I2C, UART available
  • LED Indicators for: ON, Charge Status, TX, RX, D13
  • TPS78233 3.3V 150mA Regulator
  • MCP73832 LiPo Battery Charger
  • MAX17048 LiPo Battery Fuel Gauge
4. The Piccolino
A small, WiFi-enabled, ultra flexible Arduino with integrated OLED. It's programmed exactly like an Arduino Pro Mini. Features:
  • CPU: MEGA328p-AU
  • Frequency: 16 MHz
  • RAM: 2Kb (some used by the bootloader)
  • ROM: 32Kb (some used by the bootloader)
  • VCC: 3.3v direct, or 3.3-12v (14vmax) via the VIN input
  • Total digital I/O: 15 (shared, see below)
  • Analog I/O: 3
  • Other: I2C & SPI bus
  • Integrated peripherals:
  • 128×64 OLED low power display
  • 8266 WIFI 802.11 b/g/n with nodeMCU loaded
  • 32KB SPI SRAM
  • uSD CARD SLOT
  • 2 channel passive TOUCH interface
  • Enclosure: 3D Printed enclosure (open source)
5. The Pixelduino
The Pixelduino is an Arduino-compatible microcontroller that features a 1.5" 128x128 pixel color OLED screen, making it perfect for creating wearables and other tiny devices. Features:
  • Processor : Atmel Atmega328P @ 5V / 16MHz
  • IO pins : 14 digital, 6 analog
  • Memory : 32K flash, 2K RAM
  • Voltage regulator : TPS61202 5V boost converter
  • Input voltage : 1.5 - 5.5V recommended
  • Available supply current : 100mA @ 0.5V, 1A @ 3V, 1.3A @ 3.7V
  • Power connector : JST PH (standard for small LiPo cells)
  • Display : 128x128 16-bit color 1.5" (38mm) OLED w/ SSD1351 driver
  • PCB Size : 1.7" x 1.7" (43 x 43mm)
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Antal Levente

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