Jack Crossfire's Blog – March 2012 Archive (3)

The truth about human powered birds (ornithopters)

A review of a human powered ornithopter that really worked shows how hard the problem would be for anything where a human was the main source of power.  Even with an exoskeleton augmentation, the power in any affordable batteries would be too little & the weight of the batteries would make human power even less important.

Better results have…


Added by Jack Crossfire on March 23, 2012 at 12:00am — 4 Comments

The truth about the STM32 USB core

Manely conrolling a USB device from a microcontroller, something we hated when it was our day job, but now suddenly need.

Also in this issue, home made JTAG is now flashing 3.7kbytes/sec.  The latency is so bad when changing data direction in a USB device, bitbanging the reads in the JTAG protocol is…


Added by Jack Crossfire on March 11, 2012 at 3:12am — 5 Comments

Marcy 2 bringup

 Marcy 2 was our most complicated layout, ever.  Manely, the camera had 20…

Added by Jack Crossfire on March 5, 2012 at 2:00am — 5 Comments

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