ATMEGA328P Microcontroller Development Board, Arduino-Compatible (WS-19287)

ATMEGA328P Microcontroller Development Board, Arduino-Compatible

R3 PLUS MCU Development Board

Based On ATMEGA328P-AU

Compatible with the Arduino official R3 board

 

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 Shield And IO Expansion Shield

Connecting With Sorts Of Sensors

What's On Board

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

Optional Development Kit

Development Kit Is Also Available For Your Convenience

Pinout Definition

Outline Dimensions

Resources & Services

Wiki: R3_PLUS

Package Content

1. R3-PLUS x1
2. USB-A to micro-B cable x1
3. OPTIONS IO Expansion Shield x1
4. OPTIONS Sensors Pack x1