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Re: oops!
[quote]Originally posted by s_alaniz
[b]Tim oops! Just re-read you're first post. I guess you're not using the analog inputs the same way we are. never mind! Quick question, do you use two or four opticals for phase/direction of your drive shafts? (I assume you're not using "tank" drive since constant motor speed would prevent you from turning.)
Last question, HOW did you get your team to STOP rebuilding and give you time to put all this stuff on the robot? We're STILL waiting for them to give us time to wire up the electronics (Oh we need electronics? Sure there's a 6 inch square section we left for you. How long do you need it for? We can give you 30 minutes....I HOPE you chasis guys are reading this!!!!!) Sorry I digress.
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Yes, we are using 1-stick tank drive. The shaft-sync is only used when the RC knows it's supposed to be going straight (x-axis at neutral).
The SC currents are being read by an on-board microcontroller that has analog inputs. The uC runs a heat model to predict when the fuses will trip. We tested each fuse and found some fuses to take TWICE as long to trip--these are now on our tank drive drill motors. Even at 100 amps of current, the fuses took about 0.5 to 1 second to trip. The RC can respond faster than that to stop the excessive current by shutting down the SC and sounding an alarm on the dashboard. The alarm resets when the control input is relaxed.
Our robot is in modular sections that can be easily removed for modification by the special functions' teams. Right now we have a bare chassis and drive train (plus all controls and pneumatics) that is used for driver training while the grabber and ball collector teams are finishing their sections.
I feel your pain... what I would give for just 5 extra more pounds of weight limit!!!
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