R3 Plus - Arduino-Compatible ATmega328P Development Board

The R3 Plus is Waveshare's very own Arduino-compatible ATmega328P-based development board. Arduino-compatibles are a great way to find something a little different for your project - ideal when you need a specific feature or function. Waveshare designed the R3 Plus with a huge number of subtle but useful changes to the default R3 design including dual voltage levels, low-profile power connectors, lateral switches and more - see the full feature list below! A Micro-USB cable is included with the board. Features

* Dual voltage levels - Supports 5V and 3.3V

* Lateral reset button - Easier to access when using shields

* Bootloader switch - The board can be configured to run a program immediately when power-up by the switch

* Micro-USB Connector - A more common USB interface and keeps the board low profile for shields

* Low-profile DC jack - Contributes to the low profile of the board, avoids shield blocking

* Power output header - A dedicated 3.3/5V and GND header for your projects and common grounding

* 3.3V Power Output - A boost to the norm, with 800mA driving capability

* Crystal Oscillator - For accurate clock references

* 8 ADC channels - more ADC pins for your project. CFG used as ADC6 by configuration and ADC7 from the reserved pin.

* Solder Pads - Pads are provided for DIY project wiring where required

* FT232 USB Driver - more compatible with mainstream Operating Systems

* Firmware Fixing - Firmware can be fixed by using the onboard FT232, no extra programmer is required

* Dimensions: 66.04mm x 53.34mm

What's Onboard

* 1) ATMEGA328P-AU

* 2) AMS1117-3.3

* 3.3V voltage regulator

* 3) NCP1117ST50T3G

* 5V voltage regulator

* 4) FT232RL

* USB to UART convertor

* 5) Arduino interface

* Compatible with standard Arduino interface with two additional analog inputs A6 (config the CFG), A7

* Solder pads provided, supports prototype breadboard

* 6) ICSP interface

* 7) Micro-USB connector

* For uploading program OR serial port debugging

* 8) Power output header

* 3.3V OR 5V, voltage level configured by the onboard power configuration switch, used as power output OR common-grounding with other boards

* 9) FT232 pins

* For burning Bootloader into the microcontroller

* 10) DC input

* 7V ~ 12V

* 11) Reset button

* 12) Power indicator

* 13) Serial port Rx/Tx indicator

* 14) User LED

* 15) 500mA fast auto-recovery fuse

* 16) Power configuration

* For configuring the operating voltage

* 17) Bootloader selection switch

* Turn ON: the board will reset when power-up OR other USB devices were detected connecting to the PC

* Turn OFF: the onboard program runs immediately when power-up, and the board will not reset when other USB devices were detected connecting to the PC

Pinout

Package Contents

* 1x R3 Plus

* 1x Micro-USB cable