 | | 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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| | microphones and heat sensors
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I am a highschool intern trying to build a lego robot which models a housepet using the handy board. My task involves the robot sensing a "doorbell" and moving towards the sound. I will need to use microphones to accomplish this and I am wondering (...) (27 years ago, 12-Nov-97, to lugnet.robotics.handyboard)
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| | bit_set and Poke
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Could someone xplain the relationship that bit_set, bit_clear and poke / poke word have ? Specificallt in the bit_set code used for the motor control, 0x0e is placed before the bit values - why ? I geuess this is used to select the motor port, but (...) (27 years ago, 12-Nov-97, to lugnet.robotics.handyboard)
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| | UK SUPPLIERS OF PCBSDate: Tue, 11 Nov 1997 21:40:00 GMT
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Hi John, JJ> I am just writing to see if you still have the PCBs available. If Yeah, I do - the guy I originally emailed hasn't got back to me yet. Neither has anyone else actually! I'm just in the process of enquiring about ordering a Fingerboard (...) (27 years ago, 12-Nov-97, to lugnet.robotics.handyboard)
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| | Re: L239
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Chuck is correct. There are some other subtle differences between the D and E versions but the basic function and capability are the same. John Bachman (...) (27 years ago, 11-Nov-97, to lugnet.robotics.handyboard)
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