 | | time usage
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hello, i am having trouble conserving time in my IC code. i am using an analog() function, and a motor() function. does anyone know how long it takes to execute these functions? also, do the encoder functions that are posted on the website take much (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | What needs to be done to get both the Floating point fix & the Smooth PWM?
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What changes need to be done to get both the floating point fix in IC v. 3.2 beta 1 and the smoother PWM functions? (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Logic level conversion
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To convert from 0-3 to 0-5 I would suspect that all you need is a 2N2222 NPN transistor with a couple of resistors to bias it. For example: +5volts 100 ohm resistor collector ---...---0-5 input 0-3v output -----1k resistor ----- base emitter 0volts (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Re: stepper motor standard libary
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check out this page (URL) Message----- From: phillip chia <philchia@singnet.com.sg> To: handybd <handyboard@media.mit.edu> Date: Monday, November 30, 1998 11:45 AM Subject: stepper motor standard libary (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Logic level conversion
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I have a device that uses 0 - 3V logic levels for the data output. What can I do to convert the output to match the 68HC11's 0 - 5V logic level? Thanks for the help, Dave (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Good 9V motor source -Reply
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These motors are exellent quality and very powerful the gears are metal and the motors does not exed 300 mA @12V stalled. I currently use the same motors on my robot and had no problems at all. I drive them using the motor drivers on the Handy Board (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Print to IC's console window
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(...) there is no builtin way of doing this. to get msgs back over the serial line, see the FAQ question at: (URL) Is it true that the handy board can only work when the LCD is plugged onto (...) you need a replacement pcode file to let the HB work (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Good 9V motor source -Reply
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jameco (www.jameco.com) has several new gear head motors in the 3-12v range with various gear ratios. I ordered two for my latest project and they seem to be solid and up to the task. jameco's latest catalog also has some robotic stuff including (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Extra output for clocking
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Hugo Robertson: One of the nice things about the 68HC11 chip is its well rounded timming system. Grab your Handy board Technical reference manual and have a look at page 48. PA0-3 are "Input Capture" pins. When the logic level changes (according to (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Print to IC's console window
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Hi, Does anyone know how to print messages to the IC's console window while running IC.exe. Is it true that the handy board can only work when the LCD is plugged onto the handy board ? It is because when ever it unplugged the LCD from the handy (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | uncondition jump to label
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Hi all, Can we use goto command in IC for unconditional jump to label. If yes, how. If no, any alternative any body using for this. Help would be much appreciated. regards Javaid Iqbal (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Extra output for clocking
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I have a stepper motor controlled by a Motorola MC3479 driver, which basically allows me to input a clock and the direction from the handyboard and the driver does the sequencing. So I'm using 2 pins from the HB's motor output for controlling the (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Good 9V motor source
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(...) The Bulldozer kit has a decent gearbox in it, however there are some problems with it. The motors are 3v, so you really need to use an alternate power supply. Also, the tracks are not very good at all and will not last under any real use. the (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Good 9V motor source
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(...) Try Lego Technic kits. Start with a basic kit like the Giant Model Set (#8277) for $44, and add a couple 9V mini gear motors (#5225) for $17.50 each and a gear assortment for $4.50. Call Lego Shop-At-Home for a catalog (1-800-453-4652). If (...) (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Choosing a shaft encoder?
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(...) I would have to agree. We evaluated incremental encoders from US Digital. We purchased the "low cost" encoders and paid just over $54 US. -d # rsh -l God universe.all find / -name '*windows*' -exec rm -rf {} \; (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
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| | Good 9V motor source
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Hi all....I'm looking for a good source of 9V gear motors that i could use with the handyboard for a mobile robot. Currently, i am just using the little 9v motors that came with the board, which i have plugged into the cheap gearbox from a toy tank, (...) (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
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| | Re: -1 with sonar routines?
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(...) The elapsed time calculation can result in negative numbers since the system clock wraps back to zero when it's maxed out. If the elapsed time comes up negative, then the sonar_sample() and sonar_closeup() functions return -1. This could be (...) (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
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| | -1 with sonar routines?
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What causes a -1 with the sonar routines. I checked about all the connections that I could think of. Any help would be appreciated Thank you, -Peter ---...--- Peter Eacmen Boston Latin School babylongod@usa.net Knowledge is power, power is money, (...) (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
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| | stepper motor standard libary
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hi, i need to know that is there any standard libary files in the Interactive C software required if i want to use a stepper motor ? If Yes, how should I porceed it ? rgds, phillip (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Has anyone been experimenting with mapping algorithms?
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For a class project, I found a few alternatives for obstacle avoidance with known areas using evolvable code. You could call it mapping, I suppose, though it maps for a specific type of problems - those that have a "goal" of some sort (I used a (...) (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
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