 | | Load Capacitance of the 8MHz crystal?
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Salutations, all, I'm putting together a couple boards, and Mouser has (unfortunately) discontinued the part number listed in the parts list. There are, however, several 8MHz crystals of an appropriate size in the catalog, but I don't have an old (...) (27 years ago, 23-Jul-97, to lugnet.robotics.handyboard)
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| | Obtaining the Handyboard in the UK
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I have check with Customs & Excise in the UK and they say that there is no ?145 limit so obtaining the board from Hong Kong seems like a better idea and getting the enclosures from the states on their own (the charger needs to be obtained in the UK (...) (27 years ago, 23-Jul-97, to lugnet.robotics.handyboard)
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| | Re: Converting servos + other stuff
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(...) Servos work well, but are constrained to relatively light robots (less thana three pounds. You can use them on heavier robots if you install a bearing axle for the wheels and just use the servo to drive the wheel. Basically the servo wasn't (...) (27 years ago, 23-Jul-97, to lugnet.robotics.handyboard)
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| | Converting servos + other stuff
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hello, Yall! I'm trying to find a good source for motors, but to no avail.Has anyone tried using modified servos, as described in 'mobile robots'(Jones and Flynn)? It seems kind of expensive, but these appear to be pretty good quality stuff. (...) (27 years ago, 23-Jul-97, to lugnet.robotics.handyboard)
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| | i/c board as battery charger
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Hi, I've just succesfully assembled the hb kit i got from Digital Micro and attached it to a 2 wheel differential drive chassis. I'm very pleased with the handy board, but it's been a bit annoying when i'm downloading pcode and it takes the board a (...) (27 years ago, 22-Jul-97, to lugnet.robotics.handyboard)
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| | FW: Obtaining the Handyboard in the UK
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I don't know if Patrick sent this to the list but just in case here is his mail regarding the Handyboard in the UK. (...) (27 years ago, 22-Jul-97, to lugnet.robotics.handyboard)
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| | Re: Obtaining the Handyboard in the UK
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<bold>John Hatton, writes: </bold><x-quoted>The problem with ordering from the USA is that</x-quoted> <x-quoted>customs charge taxes/duty on goods over ?145 ($237 approx.) which</x-quoted> <x-quoted>increases the cost. </x-quoted> In Canada custom (...) (27 years ago, 22-Jul-97, to lugnet.robotics.handyboard)
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| | Obtaining the Handyboard in the UK
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Does anybody know if it is possible to get the Handyboard in kit form or assembled in the UK. The problem with ordering from the USA is that customs charge taxes/duty on goods over ?145 ($237 approx.) which increases the cost. Thanks in advance for (...) (27 years ago, 22-Jul-97, to lugnet.robotics.handyboard)
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| | Re: LM34 temp sensor to handy board?
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(...) Depends on the specific version of the LM34, I believe mine can read between -50 to 300 degrees Fahrenheit. ---...--- Jeff Keyzer UCSD EE Major jkeyzer@ucsd.edu (URL) (27 years ago, 22-Jul-97, to lugnet.robotics.handyboard)
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| | Re: LM34 temp sensor to handy board?
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(...) of (...) accuracy. What is the maximum temperature that the LM34 will 'read' ? Thanks Chris (27 years ago, 22-Jul-97, to lugnet.robotics.handyboard)
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| | Re: LM34 temp sensor to handy board?
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Jeff, I used a couple of the 10mV/deg Kelvin ones, with nothing more than the current load resistor, ie no amplification at all. For example, freezing point = zero celcius = 273 Kelvin = 2.73 volts. With the 6811 resolution of about 20 mV (5v / (...) (27 years ago, 22-Jul-97, to lugnet.robotics.handyboard)
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| | headers
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This may sound like a dumb question, but I don't know where to get headers. Digi Key has some but 4 different kinds. The parts list says nothing except 14 pin female header. Nothing else. Where did you get your headers and what are the part numbers? (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: Servo control using Miniboard slaved
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Chuck: I agree with you; what I've done with the MiniSSC is to break the path into a set of linear segments with via points in joint space. The lynxmotion arm ends up needing a lot of points (therefore moving pretty slowly) to avoid jerkiness, but (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: LCD display
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(27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: LCD display
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Hi. Give me the location and phone number to this place that you can order them and I will consider ordering several and selling them off individually. Scott sherman@plains.nodak.edu CSG ITS NDSU (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | LCD display
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Hi there, I'm in the midst of ordering all of the parts necessary to assemble the Handy Board. However, I'm having trouble finding two parts. They are the following: Description Catalog No. Manufacturer ---...--- ---...--- ---...--- Infrared (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: FW: Serial Communications.
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Hi Fred: The Mini SSC does have a TTL-mode, but it needs inverted data i/o mode. Rather than figuring out how to do that in s/w I just used the MAX232 because it was easy and it made debugging easy into a dumb terminal program on my PC. I've had (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: Servo control using Miniboard slaved to Handyboard.
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Using the Miniboard as a servo slave is a good idea, perhaps even easier is to use a BOTBoard since the BOTBoard doesn't have any motor drivers hooked up to it (no PCB modification required.) Using the MiniSSC is "ok" but for controlling multiple, (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: FW: Serial Communications.
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Mike -- Doesn't the Mini SSC have a TTL-levels mode, making the MAX232 unnecessary? Please send your serial output code, though. that would be good to distribute. -Fred In your message you said: (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | FW: Serial Communications.
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Hi John: I've used the HB to send serial command strings to a Mini SSC (for the Lynxmotion arm). I built a tiny daughterboard with a MAX232 that plugged into J6 on the board for power. Software handshaking is minimal and the MiniSSC works fine. If I (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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