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 | | Re: Digit outputs....
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| Rather than trying to figure out the hex for the bits, I use the IC binaray number format, "0b". I set the bits using a binary mask, for example, to set the MOSI pin high, I use: bit_set(0x1008, 0b00001000) then to set the MOSI pin low, I use: (...) (28 years ago, 20-Feb-97, to lugnet.robotics.handyboard)
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clear
(score: 1.096)
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horse
(score: 1.096)
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| | Re: BrickWorld 2007 - who's getting paid?
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| (...) This whole "profit" "non-profit" conversation is a straw man. AFAIK there have never been any "non-profit" organizations putting on LEGO fests. Non-profit is a category of organization with a specific legal status. What this whole thing boils (...) (18 years ago, 15-Mar-07, to lugnet.events.brickworld, FTX)
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horse
(score: 1.095)
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| | Re: IR Collision avoidance
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| The part number on the device from Radio Shack is "GP1U52X". In our earlier discussions, I thought I made it clear that I was using "the Radio Shack IR detector module", although I may not have quoted the number. If Sharp makes a module without the (...) (28 years ago, 4-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.095)
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| | re: ztx614
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| On Wed, 19 Mar 1997, Stefano Nardone wrote (...) Thanks! that was not clear, where did you find info on j7? Is there a IR transmitter in the parts list? I didn't see one? Do you know what to use for a transmitter? thanks, jm (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.095)
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| | SPI Interrupts (Vector2X)
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| I am at it again! I am trying to get the Vector2X working on the SPI bus of the handy board. I have read the docs, and they seem to make sense, however, I cannot get the code to work. I have the Vector2X running as a master, my assumption is that (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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clear
(score: 1.095)
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| | Re: MOC: Terraced houses
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| (...) When they were built, as cheap housing for factory workers in new industrial towns, there were often acres and acres of them. Not a blade of grass in sight. Yes, the kids played in the street - but then, all traffic was horse-drawn and there (...) (18 years ago, 21-Mar-07, to lugnet.town)
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horse
(score: 1.095)
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| | motor voltages
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| Hi, This is in response to the question about motor voltages posted earlier tonight. Check out the archives. Late last week I posted a similar question and got some good responses about wiring the HB for two power supplies and using diodes. I have (...) (28 years ago, 1-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.095)
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| | IR xmitter/receiver idea.
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| Heres a IR xmitter/receiver idea for you; I've seen this approach used in equipment and it works very well, I'm not sure how well it will work for robotics but believe it can be adapted. This is difficult to explain but easy to build, so hang with (...) (28 years ago, 3-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.094)
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| | Vector2x SPI interrupt driven code
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| Well it works. A couple people have asked for it. Turns out the stupid V2X docs are wrong again! Like the product, but bad docs will kill it! Even if you don't have a V2X, I have seen enough traffic asking about using the SPI for things on the HB, (...) (28 years ago, 5-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.094)
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horse
(score: 1.093)
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| | Re: sonar help..
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| Sriram, It looks as though the diagram you have is correct. I should warn you that I have a sonar board in which the cable was put on backward by Polaroid manufacturing. There is a manual that you should have for the ranging unit. In the manual (pg (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.093)
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| | Once upon a time...
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| Hi all! I have bought a Playmobil set, which is beautifully made. Actually inspired by that set A Cinderella Story is the result. For those, who wish not to read the whole story, here's a link to the gallery: (URL) (after moderation) (URL) Once upon (...) (18 years ago, 1-Apr-07, to lugnet.town, FTX) !!
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horse
(score: 1.093)
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| | Re: Gig
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| (...) Thank you Jonathan, I will follow your suggestion. However what I would really like to do is this: (URL) Christian (18 years ago, 8-Apr-07, to lugnet.town, FTX)
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horse
(score: 1.092)
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| | Re: SPI port config???
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| Hi Adam, I am not certain by poking the register 0x1009 (or DDRD reg) alone could provide the clean work. The function of this register is also depending on SPE bit in the register 0x1028 (or SPCR) according to the manual. I believe you could (...) (28 years ago, 27-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.092)
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| | Re: IR Subsystem confusions.
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| (...) The handyboard consists of an IR transmitter and detector circuits. The purpose of the transmitter (when connected thru the infrared LED) is to produce infrared light waves at particular frequencies. This frequency is controlled by R4 and C6 (...) (28 years ago, 28-Mar-97, to lugnet.robotics.handyboard)
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clear
(score: 1.092)
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| | Re: Digital Outputs
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| Gordon, The steps on how to turn the SPI into 4 digital outputs are in the HB FAQ - off the top of my head I think it goes something like this.... poke (0x1009, 0x3c); /* set the 4 DDR bits for SPI (reg D) */ bit_set(0x1008, 0b00000100); /* set MISO (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
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clear
(score: 1.091)
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| | Re: BCD
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| Mar, The half carry (H) bit in the CCR sets if there is a carry from bit 3 to bit 4: in other words when there is a carry from the low hex digit to the high hex digit. Only the DAA instruction is affected by the state of H. For example: LDAA #$5A (...) (28 years ago, 3-Apr-97, to lugnet.robotics.handyboard)
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clear
(score: 1.091)
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| | Re: Mini SSC - Scott Edwards
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| (...) Stop the presses! You should have gotten documentation with the SSC but since you are apparently missing it (and its small anyway) the relevant information is that the Mini-SSC uses a serial interface to control its servos. You must send down (...) (28 years ago, 4-Apr-97, to lugnet.robotics.handyboard)
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clear
(score: 1.091)
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horse
(score: 1.091)
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