Crumb2560 V1.1 http://www.chip45.com/products/crumbuino-mega_arduino_compatible_atmega2560_module_board_usb.php Description: Crumbuino-Mega corresponds to the Crumb2560 V1.1 module with the ATmega2560 microcontroller and CP2102 USB UART converter. As Crumbuino-Mega version the module comes with Arduino bootloader preloaded and mounted 16MHz crystal. In this configuration it is comparable to the Arduino Mega 2560 module! Added is a set of suitable pin headers and receptacles (2x 48poles each + ISP header).  Due to the preloaded Arduino Bootloader and the integrated USB UART converter with mini-USB connector, the module can directly be used with the Arduino IDE as an e.g. Arduino Mega 2560 board. Main differences to the Arduino Mega 2560 is a different pinout, no 5V regulator (the Crumbuino-Mega can be supplied through USB) and the status LED is connected to a different pin. Additionally the Crumbuino-Mega provides RS232 and RS485 interfaces, which are disabled by default, so that the IO pins can be used for other purposes. You can find further information in the Infosheet. Technical Details:
Crumb328 V2.3
http://www.chip45.com/products/crumbuino-nano_arduino_compatible_atmega328_module_board_usb.php Description: Crumbuino-Nano corresponds to the Crumb328 V2.3 module with the ATmega328P microcontroller and CP2102 USB UART converter. As Crumbuino-Nano version the module comes with Arduino bootloader preloaded and mounted 16MHz crystal. In this configuration it is comparable to Arduino Nano V3.0 module! Added is a set of suitable pin headers and receptacles (2x 16poles each + ISP header). Due to the preloaded Arduino Bootloader and the integrated USB UART converter with mini-USB connector, the module can directly be used with the Arduino IDE as an e.g. Arduino Nano V3.0 board. Main differences to the Arduino Nano V3.0 is a different pinout, no 5V regulator (the Crumbuino-Nano can be supplied through USB) and the status LED is connected to a different pin. An adapted blink example project can be downloaded here. You can find further information in the Infosheet. Technical Details:
Crumb644-NET V2.1
Description: Crumb644-NET V2.1 is a highly integrated embedded internet ethernet module with the Atmel AVR ATmega644P microcontroller, CP2201 ethernet controller, transformer, RJ45 modular jack and USB interface. Ethernet Interface The Crumb644-Net ethernet interface is based on Silcon Labs CP2201 10Mbit ethernet controller with integrated phy. Additionally the ethernet transformer is already integrated on Crumb644-Net, hence no high-cost RJ45 jack with integrated transformer is required! A simple RJ45 header is suitable for connecting the Crumb644-Net to the network. USB Interface In addition to the ethernet interface a USB UART converter is integrated on the board, which is a comfortable way for ethernet configuration or to show debug output during development. Embedded TCP/IP Stack and Webserver uIP is an implementation of the TCP/IP protocol stack, optimized for small 8 bit microcontrollers. uIP provides all necessary protocols for internet connectivity, with a very small code footprint and RAM requirements. uIP is open source software, developed in C and may be freely used in both non-commercial as well as commercial projects. uIP is covered by the BSD-Style License. Further information in uIP is available on the uIP/Contiki homepage. A port of the uIP Embedded TCP/IP Stack and webserver for the Crumb644-Net can be downloaded on the download page. With V1.3 of our port a demo webpage is included, which demonstrates measurement and control applications. The onboard LED of the modules can be switched by clicking on a webpage of the webserver and the adc inputs of the module are visualized. Crumb IO Firmware An alternative port of the uIP stack was done by Stefan Frings and was extended by addition protocols, like SMTP for sending an email on an external event. See Stefan Frings homepage for details. The homepage is currently available only in english, but the source code is documented in english. The Crumb IO firmware is also available in the download section. Crumb644-NET is shipped without pin headers, since everybody likes different types (up, down, male, female, etc.). A Connector Kit with high quality pins and receptacles, link LED, RJ45 connector and mini USB connector can be ordered as an option. You can find further information in the Infosheet. Technical Details:
CrumbX128A3 V1.2
Description: CrumbX128A3 V1.2 is a versatile and very compact/small (just 40x30mm size!) microcontroller module with the ATxmega128A3U microcontroller, 3.3V LDO voltage regulator, CP2102 USB UART converter, RS485 transceiver and a micro-sd-card header/slot. All microcontroller signals are available on pin headers. A selectable XTAL crystal is included. The module is shipped without preassembled pin headers, since everybody has different preferences or requirements. A Connector Kit with a suitable set of pin headers and receptacles can be ordered optionally. You can find further information in the Infosheet. Technical Details:
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