 | | Re: Psion 5mx firmware downloader
|
|
(...) (snip account of fast download - thanks) (...) An electronics manufacturer. Specifically, in this case, manufacturer of a pda with a half-vga screen, a keyboard, built-in spreadsheet, word processing, email, databases etc.which is technically (...) (24 years ago, 29-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Psion 5mx firmware downloader
|
|
(...) As far as I know, the fast downloader is not documented except as C code. There may also have been some posts to this newsgroup or the legos one back when that code was written. I forget whether Marcus and I discussed this more by e-mail or by (...) (24 years ago, 29-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Psion 5mx firmware downloader
|
|
I've written a firmware downloader that runs on a Psion 5mx (and probably an older 5, but I haven't tested it). I should note this uses the IR tower connected to teh cable serial port (via lego's cable, psion's cable and a null modem adaptor, (...) (24 years ago, 29-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: RCX sensor interfaces - diodes
|
|
I think the real point here is that it is usually necessary to incorporate a bridge network of six diodes to interface to the RCX sensor inputs. The signalling current must pass through at least two series diodes to get to the RCX terminals - a (...) (24 years ago, 28-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: RCX sensor interfaces - diodes
|
|
The main advantage of the BAT85 is the lower voltage drop (about 0.3 Volt against 0.7 Volt for the 1N4148). (...) (24 years ago, 28-Sep-01, to lugnet.robotics.rcx)
|
