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SSRP

Submitted by ben on Thu, 11/04/2010 - 11:54
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RF

I built a single-board version of David Carr's Simple Software Radio Peripheral.  This is a USB-connected ADC that can be used for software radio work.

SSRP board Read more »

FPGA Platform Game

Submitted by ben on Mon, 10/18/2010 - 17:16
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FPGA

This is an old Nintendo-style side-scrolling game written entirely in VHDL. There is no microprocessor. The hardware consists of: Read more »

Software-Defined Radio

Submitted by ben on Mon, 10/18/2010 - 16:42
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FPGA
RF

This board downconverts and digitizes the FM broadcast band. It connects to the Digilent S3E-1600 board which selects a channel and sends the IF over Ethernet to a computer which demodulates the audio.

The sample clock is produced by a CY22150 clock synthesizer connected to J4 on the S3E-1600 board. Read more »

USB JTAG Adapter

Submitted by ben on Thu, 08/26/2010 - 16:59
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This is basically a clone of the Amontec JTAGkey. It uses the FT2232C (superseded by the FT2232D) and requires no firmware. There is an EEPROM on the board to store the USB product and vendor IDs. It will work with 1.8V-5.0V targets.

Assembled Adapter Read more »

Accelerometer

Submitted by ben on Thu, 08/26/2010 - 16:57
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This is a device a built a few years ago to measure and record acceleration in 3D. It records acceleration from three perpendicular MEMS accelerometers at 28.125 samples per second (that rate was convenient, trust me) and stores it in serial flash. Read more »

Reflow Toaster

Submitted by ben on Thu, 08/26/2010 - 14:44
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This is a toaster modified to work as a reflow oven. The toaster itself is largely unchanged except that its electrical system has been reduced to a few wires. The heater elements are now controlled by an ATmega16 microcontroller via a solid state relay. A thermocouple measures the temperature of the board. A MAX6675 reports the temperature of the thermocouple to the microcontroller. Read more »

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