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ZikZak Multimedia
Also be sure to check the Developer Blog where many photos are posted; the github 'photos' directory; and random youtube videos by Jeff.
Photos
 | zikzak sbv rec3 top view, mostly populated |
 | zikzak pre rev3 proving: avr8 proving external sram write, with sram output to VGA |
 | zikzak pre rev3 proving: avr8 proving write to external sram .. pic is focusing on the really lamely done sram; I was still really new at this :) |
 | zikzak rev3: avr8 with double buffering framebuffer all in hardware .. breadboard is about 60% done |
 | zikzak rev3: avr8 with double buffering in hardware .. breadboard is about 80% complete and completely rediculous |
 | avr8, very early VGA prototype; able to render '1xY' framebuffer.. really wide bands of colours; notice the skew during colour transitions though, due to each opcode costing some numebr of pixels since the avr8 is slower than the required VGA pixelclock |
 | avr8 driving VGA mono text mode; was using a different approach this time, driving SPI/UART to feed the video signal and help keep a regular timing (no skew) |
 | STM32 SMT part on a DIP adaptor, so it can be breadboarded; LQFP64 parts are hard to solder due to very small spacing between the pins (SOIC is not as bad); LQFP100+ is _Really_ hard to get righr - use a good solder station, and patience, and a USB microscope if you can swing it (they're cheap on ebay!) .. since this, I've acquired a hot air rework station (also relatively cheap on ebay!), and it makes your life a lot easier. |
 | Using a cheapo $11 USB microscope attached to a PC, to do solder inspection; getting a 'decent' USB microscope for $60 or so on ebay is totally the way to go for SMT soldering. |
 | Giant breadboard .. 10 breadboards stuck onto a .. bread board; I should've used a cookie sheet for a ground plane, but live and learn. This giant breadboard is used for these computing projects, since a single, or a double/triple board, just aren't large enough for these monster projects! |
| {{:zik80:avr8-robot-car-prototype.jpg?direct&100 } | Shadow car/tank/thing robotic car project, half way done, working nice |
 avr8 with RF radio receiver and writign to LCD; this was part of 'Shadow car' robot tank/car project |
Youtube videos
| ZikZak rev 3 (giant complex hardware double buffering approach) | |
|---|---|
| ZikZak rev3 hardware double buffer alternating between two random external SRAM framebuffers | |
| ZikZak rev3 stray capacitance problem in the breadboard or wiring? | |
| ZikZak rev3 hardware double buffer, alternating between two static images.. nice and clean | |
| Proving components piece by piece before assembling them into complete designs.. | |
| Proving avr8 and AY-3-8910 (actually, AY-3-8912 IIRC) can work together nicely, and easily | |
| STM32 as GPU with crystal clear VGA and 60fps animation test .. all in software |
/home/skeezix/public_html/zikzak.ca/zikzak.ca/dokuwiki/__data/pages/zik80/media.txt · Last modified: 2017/11/11 02:58 (external edit)
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