Boarduino With Atmega328 -USB
Description
If you've ever struggled to use a solderless breadboard with an Arduino, you understand how frustrating it can be! The boarduino is designed to solve this problem in an inexpensive DIY fashion. When programmed with the Arduino bootloader, boarduino can talk to the Arduino software and run sketches just like the original.
For the USB version, there is an on-board USB chip but there isn't a DC jack or 5V regulator, you can power it through the USB jack. There is a rx 1K resistor so you can use this to talk to serial accessories. And 16.00 MHz ceramic resonator is used instead of crystal, so cycle speed may be off by +- 0.3nS (0.5%). This isn't relevant for UART timing, servo drivers, PWM, etc. but could be an issue if you need nanosecond-precision timing. Note that the Arduino software only provides millisecond-precision timing for general sketches (1 second = 1000ms. 1ms = 1,000,000 ns).
Specifications
1、Designed to plug into a breadboard for easy prototyping
2、Petite size, only 2.75 " x 0.8" (75mm x 20mm)
3、All 'standard' pins are brought out - Digital 0 thru 13, Analog 0 thru 5, ARef, 5V, Ground, 3.3V and Reset
4、2 LEDs, green power and red "pin 13" LED
5、Standard Reset button
6、6-pin standard ICSP header
7、Standard USB jack
8、Atmega328 chip has twice as much storage, runs at 16.00 MHz, just like the latest Arduino. Upload baud rate is 57600, use Arduino IDE v13+ (note that the product photo above hasn't been updated)
9、USB or external power, selectable with a jumper
10、500mA fuse protects your computer from current overdraw
11、Auto-reset capability
12、Available as a low cost kit with standard parts, so its never out of stock
13、All through-hole parts are easy to solder - SMT chip is presoldered & tested when purchased as a kit
