 | | Re: Using NXT Port 4 EIA-485
|
|
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)
|
| |
| | Re: EggArt - a 4-colour Easter egg painting robot
|
|
(...) Wonderful. This is not the typical Mindstorms Printer, of course ^_^ Congratulations David! (18 years ago, 10-Apr-07, to lugnet.robotics.nxt)
|
| |
| | Re: Using NXT Port 4 EIA-485
|
|
(...) 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)
|
| |
| | Re: Using NXT Port 4 EIA-485
|
|
(...) 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)
|
| |
| | Re: EggArt - a 4-colour Easter egg painting robot
|
|
(...) 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)
|
| |
| | RE: NXT external storage
|
|
(...) 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)
|
| |
| | Re: Using NXT Port 4 EIA-485
|
|
(...) 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)
|
| |
| | Re: NXT external storage
|
|
(...) 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)
|
| |
| | Re: EggArt - a 4-colour Easter egg painting robot
|
|
(...) The promised videos (1-2Mb each): (URL) at 11Mb: (URL) David Schilling (18 years ago, 9-Apr-07, to lugnet.robotics.nxt)
|
| |
| | Re: Using NXT Port 4 EIA-485
|
|
(...) 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)
|
