 | | Building and downloading NXT firmware
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Hello Hackers, That's my first post to this group so I would like to introduce myself shortly: I'm a 34 year old german who has studied computer science some years ago. Being on the job for a few years I decided to go back to the university to get a (...) (17 years ago, 11-May-07, to lugnet.robotics.nxt.nxthacking)
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| | Deriving power from NXT® motor port A
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This (URL) special cable> allows you to power external devices such as a a motor multiplexer or a wireless camera from your NXT. No need for external bulky battery box! (if your current consumption is low enough, 800mA max). Though plugged into NXT (...) (17 years ago, 25-Apr-07, to lugnet.robotics.nxt.nxthacking, FTX)
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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 (...) (17 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 (...) (17 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, 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 (...) (17 years ago, 9-Apr-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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