 | | Re: Ooops.
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It's unlikely you killed the MCU, there are 1k resistors in series with the RxD and TxD lines. Go to the assembly manual, and run through the series of tests that verify proper operation of the Interface/Charger Board. (URL) your message you said: (...) (27 years ago, 17-Nov-97, to lugnet.robotics.handyboard)
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| | External motor power
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I want to use an external battery for motor power. I see the power expansion header apparantly for this purpose but it appears that I have to cut a trace to disconnect the HB battery from MOTORPWR. Is true? Is there anything else that I may have (...) (27 years ago, 17-Nov-97, to lugnet.robotics.handyboard)
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| | IR Demodulator Range Finder Hack
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A few months ago I found information on how to modify the Sharp IR Demodulator to produce an analogue voltage relating to the strength of IR received. The problem is that I have lost the information and can't remember where I saw it. Has anybody (...) (27 years ago, 17-Nov-97, to lugnet.robotics.handyboard)
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| | Ooops.
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Help! I accidently plugged a network rj11 cable between my HB and the serial interface board. It seems that I released the smoke genie from R 11. I have replaced the resistor and the MAX 232 but I'm not getting the board to sync. Is there anything (...) (27 years ago, 16-Nov-97, to lugnet.robotics.handyboard)
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| | Shaft Encoders
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While looking through the code 'pcode.asm' I came accross reference to various encoder routines that enable Y0 and get RSE code from the data bus. How can I call these within a C Programme ? I've not seen this feature documented anywhere (or maybe (...) (27 years ago, 15-Nov-97, to lugnet.robotics.handyboard)
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| | Motorola Reference Guides
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I just got the set of Motorola HC11 guide books and reference manuals. I can highly recommend them - I am now able to understand the processor better, and how to take advantage of its many facilities. However when requesting them from the web site I (...) (27 years ago, 15-Nov-97, to lugnet.robotics.handyboard)
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| | Re: IR devices
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The IR led I assume would be the transparent one and the detector would be the black one? There are 2 leads on the transmitter and 3 on the detector, how and where should I connect it to the HB? Any diagrams available? If this works, I have about 10 (...) (27 years ago, 14-Nov-97, to lugnet.robotics.handyboard)
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| | AD: Wirz Electronics
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Hello Everyone, We have a number of new Microcontroller products that we think you may be interested in: ---...--- Microchip PIC Products: "Programming and Customizing the PIC Microcontroller" book by Myke Predko (URL) Up The Pace" book by David (...) (27 years ago, 14-Nov-97, to lugnet.robotics.handyboard)
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| | Re: bit_set and Poke
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bit_set in english is "for the byte at this adress, make these bits high". The first argument is the address (i.e. 0x0e). The second argument is the mask which indicates which bits to make high. bit_clear in english is "for the byte at this address, (...) (27 years ago, 12-Nov-97, to lugnet.robotics.handyboard)
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| | Re: Microphone and Heat Sensors
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(...) Interesting sounding project Melissa. The trick is to distinguish the doorbell from other ambient sounds heard picked up by the microphone. One approach might be to use the LM567 PLL Frequency Detector. Its a relatively simple little 8 pin IC (...) (27 years ago, 12-Nov-97, to lugnet.robotics.handyboard)
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