The Spinneret Web Server is a small Ethernet based development platform for the Propeller microcontroller. The built-in MicroSD card socket and real-time clock allow for time-stamped files and data storage, and the oversized EEPROM can store non-volatile data for use when there is no MicroSD card present.

As an open-source hardware design, all design including layout, schematics, and firmware are available under licenses that allow free distribution and reuse. This means that the Spinneret Web Server's design can be incorporated into new applications royalty free and without a non-disclosure agreement. Web page content, files, and logs can be stored on a MicroSD card. The serial EEPROM has 32 KB for storing a Propeller program and 32 KB for non-volatile data storage, independent of the MicroSD card. There is a real-time clock controller for time stamping files and events and a backup capacitor that will keep the clock running through extended power outages.

Spinneret has a serial programming header and two auxiliary I/O connections, one for level-shifted open collector communications over a three-pin data/power/ground cable, and a the second is a 12-pin socket for direct 3.3 volt I/O connections.

There are eight status LEDs on the PCB, plus two that are repeated on the Ethernet jack. One of the status LEDs is user controllable and shares a line with a button that can be read under user control. A second button resets the Propeller to reload the firmware from the EEPROM.

Features and Specifications:

• Propeller microcontroller
• WIZnet W5100 Ethernet controller
• MicroSD card socket
• Real-time clock controller with backup capacitor
• Power Requirements: 3.0 to 3.6 or 4 to 9 VDC, 175 mA typical when idle
• Communication Interface: 10BaseT/100BaseTX Ethernet and 3.3 to 5 volt asynchronous serial
• Operating temperature: -40 to +185 °F (-40 to +85 °C)
• Dimensions: 3.8 x 1.35 x 0.67 in (9.7 x 3.4 x 1.7 cm) mounting hole centers separated by 3.5 x 1.0 in (88.9 x 25.4 mm)

Note: A Prop Plug is required to program the Spinneret Web Server. Firmware is not included.

Spinneret Web Server links

Downloads & Resources:
Spinneret Web Server Docs (.pdf)
Spinneret Schematic (.pdf)
Spinneret Bill of Materials (.pdf)
Propeller Datasheet (.pdf)
W5100 Datasheet (.pdf)
AT24C512 Datasheet (.pdf)
Real-time Clock Overview (Off Site)
SD Card Specifications (Off Site)

Open-Source Hardware Designs
Documentation (.odt)
Schematic (.svg)
Bill of Materials (.ods)