 | | Re: Another New NXT Utility
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(...) the PC ;) ROSCO (18 years ago, 10-Apr-07, to lugnet.robotics.nxt)
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| | Re: Another New NXT Utility
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(...) Hi John, Wow, that's fantastic! I've been dreaming of such a utility since I bought my NXT about a month ago. I don't have my brick with me here at work, but I'm looking forward to giving the utility a whirl once I'm back home this evening. (...) (18 years ago, 10-Apr-07, to lugnet.robotics.nxt)
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| | Another New NXT Utility
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Michael Anderson had a great idea for an NXT tool for BricxCC. He envisioned a PC screen which would show whatever was on the NXT screen, only scaled to a larger size. He mentioned his idea to me and a couple hours later it was finished (or, at (...) (18 years ago, 10-Apr-07, to lugnet.robotics.nxt) !
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| | Re: Using NXT Port 4 EIA-485
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(...) They are tiny. #define SIZE_OF_HSBUF 128 typedef struct { UBYTE Buf[SIZE_OF_HSBUF]; UBYTE InPtr; UBYTE OutPtr; UBYTE Spare1; UBYTE Spare2; }HSBUF; // HI Speed related entries HSBUF HsInBuf; HSBUF HsOutBuf; The IOMap hi speed buffer is copied (...) (18 years ago, 10-Apr-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) Hi Juergen, Yes, I found this night the entries at Lego-Source-Code... and no line about P-NET-Protocol... My first thought was to implement a simple p-net-node at own MCU, but now I can try my own communication from NXT (master) to external (...) (18 years ago, 10-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: Using NXT Port 4 EIA-485
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Hi Christian, (...) the RS-485 interface is directly connected to the AT91SAM7S USART, so you can choose the bit rate quite freely. (...) No, it is not necessary, P-Net is just a field bus which seems to be popular in Denmark, there are others which (...) (18 years ago, 10-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: EggArt - a 4-colour Easter egg painting robot
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(...) Wonderful. This is not the typical Mindstorms Printer, of course ^_^ Congratulations David! (18 years ago, 10-Apr-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) Hi, halfduplex is not the problem when connecting the NXT to an external MCU. My problem is the bitrate of 921,6 kbits/s. Simple cheap MCU like ATMega didn't support this bitrate (as far as I know). To add an external devices (e.g MCU+SD-Card (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: Using NXT Port 4 EIA-485
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(...) Hi John. I must have misunderstood something I was told a while back which went along the lines of "there isn't enough time to implement support for this feature". Perhaps there was some time after all ;) Do you know how large the OutBuf and (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: EggArt - a 4-colour Easter egg painting robot
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(...) Congratulations on getting your egg painting robot done! Looks like you got your pen mechanism working exactly as you planned. Very nice! (...) What do you mean; I think the eggs are beautiful! But I think you should write "Happy Easter" on (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | RE: NXT external storage
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(...) Yes. RobotC already supports an optional "fast" mode that is five times faster transmission when reading a single byte. For reading multiple bytes from an I2C device, RobotC is about 15 times faster than the NXT-G firmware. There are a couple (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) Do you think it is possible to read/write binary and ascii data to this device or is there a special protocol neccessary ? What about bitrate of EIA-485 device ? Is it possible to adjust bitrate to anything more usable (9600, 38400, 115200) ? (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: NXT external storage
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(...) Yes, 9600 bits/s is really slow for storage access. Is there a known way to increase the clock and transferrate of I2C ? Christian (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: EggArt - a 4-colour Easter egg painting robot
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(...) The promised videos (1-2Mb each): (URL) at 11Mb: (URL) David Schilling (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) What is not supported about this port in the standard NXT firmware? You can read from it and write to it using the IOMapRead and IOMapWrite syscall functions. Looking at the firmware source code it certainly looks like everything is setup to (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
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| | EggArt - a 4-colour Easter egg painting robot
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Just in the nick of time, the day before Easter, I completed building a 4-colour NXT Easter egg painting robot. I started building it several months ago, when I thought I'd have plenty of time before Easter. Of course, at about the 85% complete (...) (18 years ago, 9-Apr-07, to lugnet.robotics.nxt, lugnet.org.us.smart) !
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| | RE: Using NXT Port 4 EIA-485
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I've looked at implementing an interface for RobotC, but I've always struggled with why bother since there are no applications that connect to it. I wish LEGO had implemented an option to provide a logic level "RS-232" UART on port four. Yes, I (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: Using NXT Port 4 EIA-485
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(...) As far as I know, there isn't any support for this interface in either the standard firmware or any of the other third party firmware implementations. The interface runs at 921,600 bps so it will be fast enough to be really useful. I am hoping (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt)
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| | Re: NXT external storage
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(...) It may work, but it will be very slow. The NXT runs the i2c ports at only 9600kb/s, so the data will trickle to the NXT very slowly. (...) I think that the answer is yes. (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt)
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| | Re: NXT BrickSorter - Sorting bricks with a HiTechnic colour sensor.
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(...) Thx for the comments. The design as it stands right now would not allow the sorter unit to rotate all the way around - not a bad idea though. I wanted to challenge myself with the angle idea on the sorter itself (2 rows of cups). With larger (...) (18 years ago, 8-Apr-07, to lugnet.robotics.nxt, FTX)
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