 | | Expanding the memory of the handyboard
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A number of students that used the handyboard in our Mechatronics competition needed substantially more memory than the 16,320 bytes currently available. What options are there to add memory to the handyboard? Thanks to everyone who contributes to (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Interrupt for serial data
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I have been using very successfully for two months now, the code in the attached zip file. It has Interrupt Driven Transmit & Receive functions, both are buffered. I found the code easy to adapt for my specific task. Messages can be "Canned", Fixed, (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Interrupt for serial data
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I have been using very successfully for two months now, the code in the attached zip file. It has Interrupt Driven Transmit & Receive functions, both are buffered. I found the code easy to adapt for my specific task. Messages can be "Canned", Fixed, (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Digital input cct
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Hi there, I'm in the middle of building a handyboard and I'm having a lot of problems. I'm on part 7.2 (Digital Input cct) and the testdigitals(); function in hbtest.c doesn't respond to the start button. All the chips and RP1 are installed properly (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Re: pa7 9600 serial output
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(...) You have to re-write the bit_delay loop to take up four times as much time. Just multiply the delay count value by four, e.g., "LDAB #148". Fred (following is the 9600 code.) * take up 0.1042 millisecs * 208 cycles bit_delay LDAB #37 bit_loop (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | using the MC34064 LVI
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Hello, This is a warning for anyone considering using the Motorola MC34064 to replace the DS1233. I have just built a couple handyboards and I had some problems getting them working. I finally tracked the problem done to the LVI. I used the MC34064 (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Measuring PW
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Has anyone been able to successfully use Thomas Hauri's PW measuring routines?? For some reason whenever I try to load them they crash my IC. Any thoughts?? Joshua Stark j-stark@uiuc.edu Aspiring Computer Engineering Major (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | L293D
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where does the pwm go? ...the "cs" or the "in" pins? ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Speech Synthesizers
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I am wanting to add speech to the Handy Board. I am currently looking at interfacing a SPO256-AL2 speech synthesizer chip and have a very limited schematic that came with the chip many years ago. Does anyone have a nice set of schematics for doing (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Infrared port on the HB is not working: need help!
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hello! I pulled out my HB today and rtied playing around with the IR port. it does not work for some reasons. I checked the remotes: they are still transmitting! Here are the steps I took: am I missing a step? 1. loaded sony-ir.icb 2. sony_init(1); (...) (27 years ago, 15-Feb-98, to lugnet.robotics.handyboard)
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