tag:blogger.com,1999:blog-5051364811387091693.post6515277972739627745..comments2023-09-02T21:54:00.550-07:00Comments on APPLE CRAPPLE: Coding all Weekepoochhttp://www.blogger.com/profile/06765059549332407655noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-5051364811387091693.post-61748163292529879692013-01-12T18:57:10.489-08:002013-01-12T18:57:10.489-08:00THat's great! I HAVE one of those for the IIc...THat's great! I HAVE one of those for the IIc!epoochhttp://www.blogger.com/profile/06765059549332407655noreply@blogger.comtag:blogger.com,1999:blog-5051364811387091693.post-86136277376305628632013-01-12T13:29:31.667-08:002013-01-12T13:29:31.667-08:00What do you think of my idea for your drive? it is...What do you think of my idea for your drive? it is an old RF modulator repurposed for passthrough and connector on top.<br><br>http://img189.imageshack.us/img189/4283/dsc2101t.jpg<br>Javohttp://www.blogger.com/profile/05891008523006162444noreply@blogger.comtag:blogger.com,1999:blog-5051364811387091693.post-41891030720491527482013-01-11T23:31:35.865-08:002013-01-11T23:31:35.865-08:00I can tell you I am using the AVR hardware though ...I can tell you I am using the AVR hardware though a library to read FAT32 at an 8Mhz clock using 6 inch wires to a level shifter, through 3 inch wires to an SD card... and a breadboard with the MCU clocked at 16Mhz Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5051364811387091693.post-75282986495764749882013-01-11T22:28:31.195-08:002013-01-11T22:28:31.195-08:00I was just referring to the fact that I chose the ...I was just referring to the fact that I chose the UM232H for the proof of concept. Funny, I was just looking into the RAM on megaAVRs today. ATmega 1280 or 2560 have enough RAM to hold a track, but it seems like overkill. I think that because I would using the native SPI on the microcontroller rather than bit-banging, there should be enough time/cycles in between bytes to load in data byte by byte from the SD card on the fly.epoochhttp://www.blogger.com/profile/06765059549332407655noreply@blogger.comtag:blogger.com,1999:blog-5051364811387091693.post-11444184526278042382013-01-11T21:36:05.562-08:002013-01-11T21:36:05.562-08:00"it requires a USB connection to another comp..."it requires a USB connection to another computer"<br><br>or in otherwords you need more ram?<br><br>when I started trying, I was thinking about just using the uart on an avr clocking bits out at 1Mbps (which is easily handled by most uC's) but never tried it. get a micro with ~8K of ram on it (atmega2650?) and you will have space to waste for your code, and 4K to hold an entire track in ram, clock your SPI fast enough to sneak 4K into ram while the stepper heads are delayed (on the last step) and it might be possible?<br><br>just thoughts, nothing ever tested, but that was my guess on how I could do itAnonymousnoreply@blogger.com