Trugbild

Trugbild

A FPGA working in serial with HDMI, for some real live video modifications. I'm making it to prove myself, that I can route highspeed PCB and to learn to code FPGA better.

Features

• Xilinx Spartan 3 XC3S50A
• 2MB Flash memory
• 32MB DRAM memory
• Possibility to power device only from HDMI or from external input

PCB screenshots

Why "Trugbild"

It is because Trugbild is a german word meaning illusion. So I think that is a good name for device which can modify what you see :)

Develop steps

• Make PCB

• Order PCB fabrication

• Order elements

• Solder everything

• First run

• Try to run device only with power from HDMI (max. 50mA@5V)

• Make and test if device can transmit HDMI at Full HD

• Make some video modification while transmitting

• Try to add some kind of neuron network to face recognition

• Try to cover detected faces with some picture or someone face :)

Comments

Make PCB

This point took me many hours of designing because this is my first design with FPGA, so I had pretty much to learn. I'm still not sure if everything was routed least good, but I will find it out soon.

Order PCB fabrication

For this, I used JLCPCB. They have 3.5mils clearance and track width, 0.2mm holes minimum, and four layers just for 8$. That's incredible! But after uploading gerber files, it comes that they don't have 3.5mils clearance, but 0.09mm (3.543mils), so I must re-route some nets on PCB :( The 5 PCBs cost me total of $15.89 with delivery included.