 | | Moder Identification Needed
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I have a couple of nice motors that I would like to get some info on. They were removed from some medical recording devices. They are very small and have pretty good power. If you try to stop the motor by grabbing the bushing on the shaft, it is (...) (26 years ago, 16-Jun-98, to lugnet.robotics.handyboard)
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| | RE: Cheap air flow sensor
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The classic small air flow sensor is a hot-wire-anemometer. Just position a short piece of very fine wire in the airflow and normal to it, run a constant current thru it, and measure the voltage change due to the cooling effect of the airflow. Works (...) (26 years ago, 16-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Cheap air flow sensor
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Elektor had published a similar circuit for detecting air leaks. The heated transistor and another transistor acting as temp. sensor were glued together using heatsink compound. You had then to nullify/calibrate a meter at ambient temp. when the (...) (26 years ago, 16-Jun-98, to lugnet.robotics.handyboard)
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| | Re: handyboard reset vector
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Hi Justin, I believe the previous mail indicates assembly the code rather. This would be the generating the "p code" of the handy board rather than the actual IC code. Regards, -Pandit ---...--- (...) using (...) (26 years ago, 16-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Cheap air flow sensor
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We have used model boat propellers on a ballbearing and on a brass bushing. Keep the bearing or bushing well lubricated for good sensitivity at low air volume (ie: low speed of the propeller). We used the propeller mounted in 1.5 inch and 2 inch PVC (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | RE: Cheap air flow sensor
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Can someone forward the proper syntax to take me off of this listserv? Forward to massimj@usa.net Thanks Joe -----Original Message----- From: owner-robot-board@cm...l.navy.mil [mailto:owner-robot-...avy.mil]On Behalf Of Jonathan Swaby Sent: Monday, (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | handyboard reset vector
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excerpt from torkin@uni-paderborn.de: (...) what do you mean by, "compile the code"? how do you compile the code using IC? or do you use the motorola assembler, AS11? thank you. Justin D. Gullotta.. , Engineer, Rensselaer Polytechnic Institute. (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Remote Controller Needed
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Thanks, you jogged my memory. I remember that one. I'll take my HB in and check it out. Thanks To: ipscone@halcyon.com Copies to: handyboard@media.mit.edu Subject: Re: Remote Controller Needed Date sent: Mon, 15 Jun 1998 11:08:57 -0400 From: "Fred (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Cheap air flow sensor
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Does anyone know of a cheap way to construct an air flow sensor? I was looking for an article in EDN on using a self-heated transistor to measure airflow, but Ican't find it. I was also wanting to know if there is a way to create a humidity sensor, (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Canadian robotics supplier
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I just found out about a Canadian supplier of hobby robotics in Canada. (URL) have robot kits, some good looking gearboxes (for those who have wrestled with making their own), L293 and L298 motor driver kits and other robotics goodies. This is of (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Remote Controller Needed
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Casio used to make/maybe still makes a wristwatch-TV remote controller that did Sony. I have one and it works great. sorry don't have it handy to give you the model #.... fred In your message you said: (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Re: config 0x0C
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From: Alf Kuchenbuch <alfk@eikon.tum.de> (...) The 0x0C value represents EEPROM OFF, ROM OFF. A related question that I have is that I'm using the 811E2 and the hbdl program will only work if I use 0xFF. Which places EEPROM ON and at the upper most (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Remote Controller Needed
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I have a Sony IR Remote but it is a little large. I'm wondering if someone knows of a Remote Control Unit that is very small that will work with the sony-ir.icb code. I'm thinking maybe one the size of the ones used with camcorders but don't know (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | r22 Code
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I am using a Sony IR and also use the sony-ir.icb code. But I am curious what is the r22 ir code for? I also understand that if I use the sony-ir that I should not use the r22 but I'd like to know what it is for anyway. (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Re: HandyBoard Reset Vector
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(...) Hi! If you start the Handyboard (no bootstrap mode) it is in the 'special test' mode. So the start vector is located at $BFFE and $BFFF. In your assambly program use the following code: Start_vec ORG $BFFE FDB Program_Start where (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Tone Functions
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yep, 5 kHz is about the top end of the HB's 6811 capability. going higher would require dedicating the 'hc11 to generating the tone and doing nothing else. why? interrupt routine overhead. takes a bunch of cycles to handle an interrupt. the tone (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Re: HandyBoard Reset Vector
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independent of IC, the HB fetches its reset vector at $bffe-$bfff. please see the FAQ about this: (URL) you, fred In your message you said: (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | Tone Functions
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I have a problem with the tone functions. I tried each of the following: 1000 - 9000 Hz tones for 2 to 3 seconds. All work fine up to 5000 but 6000 and above have broken up sound. Can anyone explain why this happens? What is the fix? -- ---...--- (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | HB Memory
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When pcode is downloaded to the Handy Board, how much memory space does it take up? I am a little concerned about having enough memory space for my programs. As I see it now, I think I may max out the 32KB. Does anyone have tips on how to concerve (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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| | HandyBoard Reset Vector
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Hello again, I hope someone can help me out here. I want to run a standard assembly program on my HandyBoard without using IC. IC requires CONFIG=0x0C, which allows the reset vector to be fetched from external memory, instead of from $FFFE, $FFFF. (...) (26 years ago, 15-Jun-98, to lugnet.robotics.handyboard)
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