Updated December 2018 - I just completed another small build. Once again I have several blank PCBs for SmartBoard v1.01 that I will not need. When I am about out, I then usually order 10 to 20 more. I can make these available rather inexpensively. See this Kit information. Send me a private email to see what's on hand.
See also WattVision for power monitoring.
|The design objectives for this baseboard were to create a general purpose baseboard that can be used for educational use, or just as effectively designed into an embedded solution and forgotten. Whether for education, hobby, or commercial usage, a reliable design reduces doubt, development and rework.|
While experimenting, headers and shorting blocks permit easy alteration for flexible access to various IO configurations. For permanent installations, soldered-in jumpers could be used instead.
Note: This 3D rendering approximates the finished board.
Note: Actual unit in a nearly completed configuration.
- Through-hole parts [where practical] to keep it easy for educational, hobbyist, or professional to work with
- Embeddable using screw terminals for most of the interface signals
- Varying populations of parts and jumpers support combinations of:
- 2 x CAN
- 2 x RS232 (1 DB-9, or 2 Screw Terminal)
- 2 x SPI Port
- Ethernet w/LEDs
- USB-A Host
- USB Slave on the mbed itself
- PWM outputs pinned for Servo Motors
- 6 Analog Inputs (with optional surface mount protection diodes)
- 1 Analog Output (in place of 1 of the Analog Inputs)
- Micro-SD card (surface mount part)
- Battery backup for RTC (hole in PCB can be used to lock battery it in place)
- External Power Input using one of two regulators for different needs.
- Low dropout linear for lower voltage projects
- Switching regulator suitable for a wider voltage range
The BOM cost (excluding PCB and mbed itself) is about $47 in single quantity for a typical build.
- v1.01 Schematic - PDF
- v1.01 PCB - PDF
- v1.01 Bill of Materials - Excel
- v1.01 SmartBoard Pinout - PDF
- v1.01 Manual - excerpts - PDF
All documentation is believed to be completely accurate, however it is in your best interest to review and verify. Please report any errors or unclear information you may find.
- SmartBoard WiFly - Wireless sensor/control node using WiFly Bridge board.
- HDMI CEC Interface to interact with your TV and other HDMI gear.
- Display Controller to be combined with other projects.
- Security monitor - With the complement of inputs, this could monitor doors, windows, temperature, light, and signal a change with a controlled output signal, or perhaps an email to your phone.
- Car interface using the CAN port(s) - Most modern cars have CAN networks, and this could be the bridge between that and your PC.
- AV Receiver controller - There were a few years there where high end AV Receivers had serial ports, but not Ethernet. Put a [web] server in mbed, which interfaces to the AV Receiver on the back-end using RS-232. Control it from anywhere.
- Servo Controller - with 6 channels of PWM, there are some possibilities there.
- But the best idea is the one that you're thinking of...
This is the original version that was built.
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