Mark Davidson has designed an Atmel-powered (ATmega328) Arduino prototyping shield that can also be used as a stand-alone board for various DIY Maker projects. Dubbed the “White Bread Shield,” the platform is compatible with Arduino UNO boards.
“The left end of the White Bread Shield includes the shield connections and component locations for building a stand-alone board, [while] the right end of the White Bread Shield includes a breadboard-like, prototyping area,” Davidson explained in a recent Kickstarter post.
“The left end of the board allows you to mount everything you need to make the board completely stand-alone. The White Bread Shield uses all through-hole components and connections to allow for easy construction and modification.”
As we’ve previously discussed on Bits & Pieces, Atmel’s 8-bit AVR ATmega328 microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1KB EEPROM, 2KB SRAM, 23 general purpose I/O lines, 32 general purpose working registers and three flexible timer/counters with compare modes.
The MCU also features internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, 6-channel 10-bit A/D converter (8-channels in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator and five software selectable power saving modes.
The ATmega328 MCU operates between 1.8-5.5 volts. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz – neatly balancing power consumption and processing speed.