 | | programming help.
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hello can someone please tell me what does the following command line mean? bit_set(0x0e, 1 << (4 + motor)); i know that 0x0e refers to memory location $0E but how does bit_set work? is it similar to poke? and more importantly, what operation does (...) (26 years ago, 31-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Implementation question
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Hi Ronald! Ok - my HB is working now. I got the right 1233-10 (10 means 10% of 5v - reset is going up on 4.5v). This seem to work better. Second thing is the 350ms delay seem to be necessary in normal reset. The second thing was that the power (...) (26 years ago, 31-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Voltage for the DC motor
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hi, I noticed that the picture of the HB in the Web page is slight different from mine. There is no thick trace on my HB to be cut. However, the HB in the web page has a thick trace on it ? My version of the board is 1995, Fred Martin. Please help. (...) (26 years ago, 31-Oct-98, to lugnet.robotics.handyboard)
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| | Re: programming help.
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(...) In binary 1 is represented by 0000-0001 1 << 1 is 0000-0010 aka 2 1 << 2 is 0000-0100 aka 4 1 << 3 is 0000-1000 aka 8 You get the idea? x << y means slide x to the left y times. motor is probably a number between 0 and 3. 4+motor is then a (...) (26 years ago, 31-Oct-98, to lugnet.robotics.handyboard)
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| | Bend/ Flex Sensor
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Someone had inquired about Bend/ Flex sensors... There's one in the new JAMECO catalog: Flex Sensor Part No. 150551 for $10.95 (26 years ago, 30-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Sensor Problems
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Thanks for doing all this testing and reporting it to us. I do really appreciate it. And I'll vote for the low tech version: use two diodes... -- Eric (...) (26 years ago, 30-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Sensor Problems
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(...) The dual sonar interface board is simply a small (1.5" sq. or so) experimenter's PC board from Ripoff Shack with the six power diodes, the one resistor, and three header plugs soldered onto it. One plug goes to the HB and the other two go to (...) (26 years ago, 30-Oct-98, to lugnet.robotics.handyboard)
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| | Re: DC motor voltage source
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phillip: Pine 8 for the L293D is "Motor Power." There are two ways to get to this. 1) Pull the chip from the socket, lift the pin so it points straight up, then wire-wrap a new supply wire to this pin. Or scratch the trace leading to pin 8 U11 and (...) (26 years ago, 30-Oct-98, to lugnet.robotics.handyboard)
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| | HB Pcode v3.2 Source... (Was: Motor output)
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-----Original Message----- From: Eric Noyau <noyau@apple.com> To: William Bain <willbain@cs.umt.edu> Cc: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: Thursday, October 29, 1998 8:39 PM Subject: Re: Motor output (...) <snip> (...) not (...) (26 years ago, 30-Oct-98, to lugnet.robotics.handyboard)
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| | debug help
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I just finished adding the motor output circuit to my HB. I have built and tested the interface board. I connected the interface board to the HB to download the test code to test the HB and I keep getting the "wrong port or board mode" error. Not (...) (26 years ago, 30-Oct-98, to lugnet.robotics.handyboard)
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