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 | | Optrex lcd displays
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| 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)
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keith
(score: 1.067)
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| | Motor outputs
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| Dear all, I asked this question before but I might have used the wrong wordings. Here I try again. As you all know, the HB 's motor outputs give PVM, however, it gave me problems when I tried to amplify the power (both current and voltage.) Is there (...) (26 years ago, 2-Feb-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Digital outputs
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| I need to create digital outputs and expand the number of digital inputs on my handyboard. I know that if you take the data lines and latch them using one of the outputs from the '138 you can accomplish this but I would like to see a schematic (...) (28 years ago, 11-Jan-97, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | R4 Resistor
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| I am almost complete with construction of my first handyboard. I used an in accurate list to order my components and have a 2.94K resistor instead of 3.83K as per the other list I have and the assembly manual. My question is; Is the resistor only (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | High power motor drivers
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| I need to drive two motors from the handy board and I need a little help building a driver circuit. The motors are 12v ~1.5A motors that are to be run in both directions. I want to use the motor outputs on the handyboard as the control signal to the (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Thanks - HB back to life!
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| Thanks to all who helped me restore my HB back to life. After shorting the battery pack on the board during the last assembly step, it turned out to be only the A1 processor blown. Also, a BIG THANKS to Prabal Dutta at Digital Micro System. I (...) (29 years ago, 20-Feb-96, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: Help needed!
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| If you're having problems getting your HB to work on one serial port but it works on another, you might want to check for IRQ conflicts. By default, Com1 and Com3 both are assigned IRQ3, and Com2 & Com4 are both assigned IRQ4. So if you have a modem (...) (25 years ago, 31-Mar-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: Fwd: hellofriend
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| (...) A sad attempt at a con job. They claim they want yo give you custody of $35M (of whoich you're supposed to keep 30%), and all you have to do is send them your bank account number. Somehow I rather doubt a legitimate offer of this sort (if this (...) (24 years ago, 15-May-00, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | PVM output
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| Dear all, I looked at the lib_hb file and found the portion for motor outputs. void motor(int m, int speed) { if (speed>100) speed=100; if (speed<-100) speed=-100; if (speed >= 0) _set_motor(m, 0, (255*speed)/100); else _set_motor(m, 1, (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | 6V question - is this OK?
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| Is this OK for getting 6V to motors connected to the L293s? I tapped off the center of the battery back and get about 6V. I then soldered a wire at that point on the battery pack and then soldered the other end to pin 8 (Vs) of each of the L293s (I (...) (29 years ago, 20-Feb-96, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: Help with pointers
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| (...) When you do pointer arithmatic, you work in increments of what the pointer points to. So if you have a pointer to an int, as in the above example, when you add one to it, you actually make it point to the next int, not the next byte or word. (...) (26 years ago, 25-Mar-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | IR wall detection
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| I have recenty perfected a simple sensor using the Sharp IR detector but I need some help in interfacing it. I plan on having about 16 sensors all around the perimiter of the robot but I don't want to have them running all at the same time because (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | I think I fried my board!!
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| I need help figuring out what I did to my handyboard. I had it all assembled, tested, and working when one of the battery leads touched one of the solder spots on the board. A small puff of smoke rose from the board but I was able to disconnect the (...) (28 years ago, 7-Jan-97, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Compiler errors.
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| I am still getting a strange compiler error and I can't figure it out. The exact error is: Compiler error! 62 extra bytes left on board stack Sometimes the number of bytes is more and sometimes less. I'm sending along a copy of the code that is (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: GCC 2.8.1 for HC11
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| I've taken a look at Chuck's LCD code, and I agree that it's the best I've come across. I spent last weekend studying how to program the HB in assembly. There is a woeful lack of documentation for it. There is plenty of docs on programming in IC, (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: Sonar and RF Modem questions
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| (...) <snip> (...) I just took a look at the Linx site, and while perusing the fine print at the end of the price list came across this: "Linx requires the purchase of an evaluation kit prior to the sale of individual modules to any customer. This (...) (26 years ago, 17-Feb-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: GCC 2.8.1 for HC11
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| The problem I have isn't programming the HC11. I picked that up with no problem by spending a day reading Motorola's reference manual (AKA the pink book - kindly provide free by Motorola via their web page). I've got a software background, and while (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: GCC 2.8.1 for HC11
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| Curt, I can't help test with a miniboard, since I just have a handyboard ("just" have a handyboard?). But I'd be willing to give any help I can with the handyboard libs. I'm also a willing guinea pig for trying out your gcc-2.8.1 patch and README. (...) (25 years ago, 2-Apr-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | HB died - HELP
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| HELP . . . My HB has stopped going into bootstrap mode. Hope someone out there can help!!! The HB had been working fine. I was having fun with IC, and I finally got around to the Fuse and Battery final assembly (Part 6 of the assembly instructions). (...) (29 years ago, 4-Feb-96, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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| | Re: GCC 2.8.1 for HC11
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| (...) I think I'm in the process of writing up such a document. Combined with Fred's guide to programming the 6811 (which covers the miniboard nicely), hopefully this will fill the gap. (...) And using IC libraries works well, up until you have a (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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keith
(score: 1.067)
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