... MCF52223 is the one we are going to be using. But I see Digikey lists it as Non-Stock. ... -- Jeff Sampson (651)605-8884 HSS Group - Mendota Heights Cray...
Jeffry Sampson
jsampson@...
Jun 1, 2007 3:17 pm
876
... Bill, We're using the MCF52223 for our new supercomputer. It's got FLASH and USB 480 on it and it comes in 100 and 64-pin LQFP packages. 66MHz or 80MHz. ...
... Actually Alan is still hoarding the development kit in the back seat of his car....
Jeffry Sampson
jsampson@...
Jun 1, 2007 3:41 pm
878
... MCF52223CAF80 (80mhz 100pin.) Yes that would work... If I use 6 IC's per PCB. (I like to throw hardware at the problem) It's still within budget :) The...
Rick are you smoking crack? I don't get it. Jeff ... ________________________________________________________________________ ... user panel and lay it on us. ...
... How about "a confounded food machine" (food processor) "a smelly food factory" (meat processor) -- At this point it looks like Alan convinced me to use the...
Ok, I see Bill and Brian's posts. I am starting to get it. I say Rabbit? Is that right? Rick I didn't know you were a rabbit guy. Isn't that Peter Ellison ...
64 or 100 pin package? I'm trying to get a feel for which version will be around for the next 5 years. Right now it looks like the 100 pin part is the only...
... ARRG... It looks like it's USB is only "full speed" (12 mbps) I want USB "High speed" (480) since I plan on using the the PC's processor to calculate all...
Sorry...maybe I should have been more blatant about being OT...way OT. Just to quell the rumors, I'm not smoking crack. Rich ... Ok, I see Bill and Brian's...
... Even if the external processor could do the math there is still the issue of sending 90,000 pixels per second to the controller. The image to be laser...
... At 12 megabits-per-second, your pixels can be up to 16 bytes-per-pixel and you can jam 90,000 of them into one processor. It doesn't seem like depending on...
For a long time I have had a nagging problem with my Research 3 robot (the green one). When the robot is moving it has a random stutter to the speed. You can...
Jeffry Sampson
jsampson@...
Jun 2, 2007 11:27 pm
891
Or should I say Software vs Hardware vs Mechanical, to distinguish between electronics hardware and mechanical hardware? Fixing my interrupt problem may have...
Jeffry Sampson
jsampson@...
Jun 3, 2007 2:24 am
892
... Sounds completely plausible to me. Also see what the change from floor to ramp is like - if there's a slight bump, slop in the drivetrain could cause an...
... I had considered the angle I approached the start of the ramp. Mainly because I was worried about robot falling over. So when I did the tests in question I...
Jeffry Sampson
jsampson@...
Jun 3, 2007 11:30 pm
894
Dave (OVERKILL), I forgot what you told me about the motors on your robotic arm. What company? I remember you saying they tossed all the info. Maybe some 20...
... This is a true statement Jeff. When I designed the haptic knob for Professor Durfee he told me the same thing. My program consisted of a PID loop that...
Hi folks, I am building a small project as many other have in the past- a rc truck conversion to bot platform. Mine is a toy, radioshack 4x4 truck and is a...
... It's always good to see somebody starting a new project. ... Yes, you can probably use PWM instead of a constant DC level and control the h-bridges to get...
Jeffry Sampson
jsampson@...
Jun 6, 2007 10:42 pm
898
... On Behalf Of timbomcnuckle ... rc ... this ... diffs ... steering ... design I ... toy's ... control I ... control the h-bridges to get variable speed. ......
... What is ss- ... A very simple PWM can be created with a loop. You set the bit at the start of the loop. Then inside the loop check to see if the loop count...
Jeffry Sampson
jsampson@...
Jun 8, 2007 12:43 am
900
... I replaced the (rather dodgy) steering servo in mine with a real hobby servo - significantly easier to control, stronger, clutchless and therefore more...
... application ... than ... I ... the ... trhe ... that ... I ... you ... know ... restricted ... other ... the start of the loop. Then inside the loop check...
... Is that the politically correct defininition? ;-) ... What is ECCP? The 16F876 has CCP (Capture/Compare/PWM) modules. So it will do two channels of...
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