Waveshare 19287 R3 PLUS
Description
R3 PLUS MCU development board
based on ATMEGA328P-AU
Compatible with the Arduino official R3 board
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-1.jpg)
What's the differences
R3 PLUS | Official R3 | Remarks | |
---|---|---|---|
Operating voltage | 5V/3.3V | 5V | Dual voltage level to support more shields |
Reset | Lateral | Vertical | Lateral button is easier to use when connecting with shield |
Bootloader switch | Yes | None | The board can be configured to run program immediately when power-up by the switch |
USB connector | Micro USB | USB Type B | Micro connector is more commonly used, and shields won't be blocked anymore while connecting |
DC jack | Low profile | Normal height | Shields won't be blocked anymore while connecting |
Power output header | Yes | None | Providing 5V/3.3V power output OR common-grounding with other boards |
3.3V power output | 800mA Max | 150mA Max | R3 PLUS features higher driving capability |
Oscillator | Crystal oscillator | Ceramic resonator | Crystal oscillator is suit for applications where accurate clock reference is required |
ADC channel | 8 | 6 | CFG used as ADC6 by configuration, and ADC7 from the Reserved PIN |
Connecting with prototype breadboard | Supported | Not supported | Solder pads is provided for DIY interfaces to connecting with prototype breadboard |
USB driver | Compatible with all main systems | Doesn't compatible with WIN7/WIN8 Express Edition | Driver will never failed to install thanks to the onboard FT232 |
Firmware fixing | Supported | Not supported | Firmware can be fixed by using the onboard FT232, no extra programmer is needed |
Connecting with Waveshare Shields
Connecting with Motor Control ShieldandIO Expansion Shield
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-3.jpg)
Connecting with Sorts of Sensors
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-5.jpg)
What's On Board
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-intro.jpg)
- ATMEGA328P-AU
- AMS1117-3.3 3.3V voltage regulator
- NCP1117ST50T3G 5V voltage regulator
- FT232RL USB to UART convertor
- Arduino interface
- compatible with standard Arduino interface with two additional analog inputs A6 (config the CFG), A7
- solder pads provided, supports prototype breadboard
- ICSP interface
- MICRO USB connector for uploading program OR serial port debugging
- 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
- FT232 pins for burning Bootloader into the microcontroller
- DC input 7V ~ 12V
- Reset button
- Power indicator
- Serial port Rx/Tx indicator
- User LED
- 500mA fast auto-recovery fuse
- Power configuration for configuring the operating voltage
- 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
Optional development kit
development kit is also available for your convenience
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-7.jpg)
Pinout definition
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-inter.jpg)
Outline dimensions
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-size.jpg)
Package Contents
- R3-PLUS x1
- USB-A to micro-B cable x1
- OPTIONSIO Expansion Shieldx1
- OPTIONSSensors Packx1
![](https://www.welectron.com/mediafiles/productimg/waveshare/devkit/R3-PLUS/R3-PLUS-details-7.jpg)
Shipping weight: | 0.08 Kg |