 | | uncondition jump to label
|
|
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)
|
| |
| | Extra output for clocking
|
|
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)
|
| |
| | Re: Good 9V motor source
|
|
(...) 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)
|
| |
| | Re: Good 9V motor source
|
|
(...) 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)
|
| |
| | Re: Choosing a shaft encoder?
|
|
(...) 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)
|
| |
| | Good 9V motor source
|
|
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)
|
| |
| | Re: -1 with sonar routines?
|
|
(...) 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)
|
| |
| | -1 with sonar routines?
|
|
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)
|
| |
| | stepper motor standard libary
|
|
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)
|
| |
| | Re: Has anyone been experimenting with mapping algorithms?
|
|
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)
|
| |
| | Re: Has anyone been experimenting with mapping algorithms?
|
|
(...) The two basic approaches are (1) a bitmap, and (2) a list of obstacle coordinates. A bitmap is just a grid of 1's and 0's indicating the presence of an obstacle at each grid point. It can be implemented as a 1-D integer array with a simple (...) (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Has anyone been experimenting with mapping algorithms?
|
|
Hi everyone, We've been reading up on the many different algorithms for mapping an environment using autonomous robots. Has anyone else been trying to figure out the best approach to map an area and it's obstacles using less than 32k of memory? (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Choosing a shaft encoder?
|
|
We're using a track drive system and we're going to be using L.E.D. proximity sensors off of the teeth of the track gears. The tank tracks appear to be very stable but it's still too early in the development to know how repeatable the robot (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Optrex lcd displays
|
|
I must apologize for my last request, upon further investigation I found an excellent resource that answers the questions i posed earlier. For anyone who might be interested, the source can be found at : LCD MODULE TECHNICAL REFERENCE (FAQ) Version (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Choosing a shaft encoder?
|
|
i use US Digital encoders, www.usdigital.com. they are a bit costly, but very accurate, and have quite a few numbers of resolutions. good luck justin (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Optrex lcd displays
|
|
I am trying to interface an Optrex DMC display to a miniboard. What pins besides the data lines need to be connected and to what? Anyone used these displays yet, I have two a one line x 16 characters and a two line x 16 characters. The pin out (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Choosing a shaft encoder?
|
|
(...) hy, I used HewlettPackard shaft encoders HEDL5540 (500 steps per revoltion) with HCTL2020 quadrature shaft counters/decoders. With them you get 500*4=2000 steps per revolution, which is quite a lot. For me They seem to be a good (but not (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Choosing a shaft encoder?
|
|
(...) I've had good results using the Hall-effect magnetic sensors that Patrick Hui sent with my HandyBoard. I glued magnets into three of the six holes in a Lego pulley wheel and glued the sensor into a small Lego brick. I don't know the part (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: How to use the addition analog port ?
|
|
You can time share both your digital and your analog so long as your signal update speeds are not critical. Use a 4 to 8 demultiplexing chip for 4 of your digital I/O and an 8 to 4 multiplexer for the other 4. This effectively provides 8 digital (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | When people answer a question, I would like to broaden my knowledge as well.
|
|
Please either carbon copy your solutions to me, or the HB mailing list. I see a lot of good questions, but only a very few peoples responses. Thank you, (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
|
