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스파크펀 레드보드 플러스 아두이노 보드 -Qwiic, 600mA
(SparkFun RedBoard Plus)
개요
- 본 제품은 스파크펀 레드보드 플러스 아두이노 보드입니다.
- 기존의 아두이노 우노 폼팩터에 AP2112 3.3V 전압레귤레이터를 사용하여 여러개의 I2C Qwiic 센서들을 데이지 체인으로 연결하여 사용하기 위해 최대 600mA까지의 전류를 공급하여 줄 수 있는 보드입니다.
- 여러개의 Qwiic 장치를 연결하고자 할 경우 추천하는 제품입니다.
특징
- ATmega328P microcontroller with Optiboot (UNO) Bootloader
- Input voltage
- 7V to 15V via barrel jack
- 5V via USB-C
- Voltage Regulators
- LM1117 adjusted to 5V
- AP2112 for 3.3V
- Built-in Resettable PTC Fuse 5V/2A
- CH340G Serial-to-USB Converter
- 3.3V to 5V Logic Level Switch
- 22x Digital I/O Pins (6x PWM Outputs, 8x Analog Inputs, 1x UART, 1x I2C, 1x SPI)
- 1x Qwiic Connector
- A4/A5 Jumpers
- 2x3 ISP Header
- 32kB Flash Memory
- 16MHz Clock Speed
- All SMD Construction
- R3 Shield Compatible
- Improved Reset Button
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The SparkFun RedBoard Plus has all of the hardware peripherals you know and love: 22x Digital I/O pins with 6x PWM pins, 8x analog pins, UART, I2C, SPI, and external interrupts. We've also broken out the SDA, SCL and IOREF pins that showed up on the Arduino Uno R3 footprint, so the RedBoard Plus is compatible with future shields (if you choose to use them). Two additional analog pins are included for A6 and A7.
The USB-to-serial is now done with a reversible USB-C connector with through hole anchoring and the ubiquitous CH340G requiring fewer driver installs. The power portion of the RedBoard Plus has been optimized: we use the AP2112 3.3V voltage regulator to provide up to 600mA to daisy chain multiple Qwiic boards and sensors, with full thermal and reverse circuit protection, and added extra decoupling capacitance to increase the sensitivity of the ADC readings. We've also increased the PTC from 500mA to 2A. We've decreased the brightness of the power LED, pin 13 LED, and the TX/RX LEDs from blinding to just perfect.
We've included 3.3V voltage translation and a Qwiic connector to the edge of the board to allow for quick and seamless connection to our ever-growing line of I2C based Qwiic products. Jumpers are included on the board for the A4 and A5 pins which are tied directly to the I2C bus and can be used to disconnect the logic level converters from the pins.
For more advanced users we've added an I/O voltage switch also known as the "Red Squirrel" switch (because they are the one who petitioned for the mod). Now you can easily select the GPIO voltage between 3.3V or 5V with just your finger. This is extremely handy if you have a shield or 3.3V sensitive devices, such as an SPI interface, that needs protecting. Worried about accidentally flipping the switch? A piece of tape will lock it in place!
We include clearly labeled PTH holes alongside the standard female headers. This makes it very easy to solder wires in place for a secure connection to make your project 'backpack safe' once you get it working. Solder pads are included on the bottom of the board for USB data pins D+/D- so you can embed your RedBoard Plus into a project and run an external USB connection. We've increased the height of the reset button. This doesn't sound like much, but everyone who's touched it loves the improvement.
The SparkFun RedBoard Plus can be programmed over a USB-C cable using the Arduino IDE: Just plug in the board, select "Arduino UNO" from the board menu and you're ready to upload code! You can power the SparkFun RedBoard Plus over USB or through the barrel jack. The on-board power regulator can handle anything from 7VDC to 15VDC. Check out the related items below for a compatible wall-wart power supply.
