 | | RFC: Mux schematic viability
|
|
If anyone with electronics experience has a moment or two, I would be very grateful if they could take a look at (URL) This is a design based on the 4017/4066 multiplexer on Michael Gasperi's website except that I want to use BAT85 diodes rather (...) (24 years ago, 1-Oct-01, to lugnet.robotics.rcx)
|
| |
| | Re: Sending ir packets
|
|
(...) Here ya go: Remember start bit (sometimes called 2 stop bit mode) 55 00 D1 ~D1...Dn ~Dn C ~C Add all the normal D parts in a single Byte for Chksum. Code chunk for example ... unsigned char MuxStr[] ={0x55,0xf7,0x08,0x0...xf8,0x07}; count = 7; (...) (24 years ago, 29-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Test
|
|
Hi Paul, (...) Seen from my side: nothing! I just tried, and it went through as it should! Regards, Martin (24 years ago, 29-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Sending ir packets
|
|
Check the source code for NQC (in rcx/RCX_Link.cpp), or even use it as your underlying comms library. You may spot something Dave does that you don't.. Phil. (...) (24 years ago, 29-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Test
|
|
I can't post anything to the Java news group. What's going on? (24 years ago, 29-Sep-01, to lugnet.robotics.rcx)
|
| |
| | 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)
|
| |
| | Gyro Sensor for RCX?
|
|
Hi there, I just came across a micro gyroscopic sensor Development Kit on: (URL) device would make a very nice turn and spin sensor for the RCX. Unfortuantely I don't own a Mindstorms box yet (My kids are still too small) and I just thought you guys (...) (24 years ago, 28-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Web site up
|
|
"JP Brown" <envcons@ameritech.net> ha scritto nel messaggio news:GK2xHw.9DJ@lugnet.com... (...) and (...) I like them. Very much. Great robots, Jonathan, and very well documented! Mario (24 years ago, 28-Sep-01, to lugnet.robotics.rcx)
|
| |
| | RCX sensor interfaces - diodes
|
|
I'm in the middle or working out the circuit for my gray encoder sensor and looking at the various interface schemes. I notice that most examples use 1N4148 diodes, but one site I have visited (but I can't for the life of me remember which :/) (...) (24 years ago, 28-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Mass and other spec's for RCX components
|
|
(...) 115g (...) 260g (...) 45g (...) 30g all +/- 5g (...) (URL) Doucette. DoucetteNet LEGO® on Brickbay (URL) (24 years ago, 28-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Mass and other spec's for RCX components
|
|
Do I detect a challenge here for someone to build a Technic/RCX based weighing machine :) JB (...) (24 years ago, 27-Sep-01, to lugnet.robotics.rcx)
|
| |
| | RE: Mass and other spec's for RCX components
|
|
(...) Depending on the relationship you have with your local grocery or butcher shop, they have very accurate scales that will measure to 1 gram = usually for free! You can also find scales at candy stores in malls... Hope this helps, Ralph (...) (24 years ago, 27-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Mass and other spec's for RCX components
|
|
Does anyone has measurements for the mass of Mindstorms components (in grams)? I am particularly interested in the mass of the RCX brick (with batteries), the gearmotors, and the motorcycle-style wheels/tires. I am having a remarkably hard time (...) (24 years ago, 27-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Does anyone have an extra usb IR tower for sale?
|
|
Both of you should take a look at (URL) a list of Pitsco ditributors in the UK. By the way, just because it says "school" doesnt necessarily mean that they only sell to schools. (...) /"\ \ / ASCII Ribbon Campaign - Say NO to HTML in email and news (...) (24 years ago, 24-Sep-01, to lugnet.robotics.rcx)
|
| |
| | Re: Does anyone have an extra usb IR tower for sale?
|
|
I'm working on a kernel mode driver for Linux for the IR Tower. Overall from everything I've figured out, this is just a USB Serial device; porting code in win32 from COM1 (Serial interface from old serial one) -> LEGOTOWER1 (The USB Tower device (...) (24 years ago, 24-Sep-01, to lugnet.robotics.rcx)
|
| |
| | IEEE Mindstorms article is now online
|
|
All -- While back ( (URL) ) I reported the September 2001 issue of 'IEEE Spectrum' Magazine had an article on adult Mindstorms builders and coders, but that the text was not online. The text *is* now online at (URL) LEGO: (URL) (24 years ago, 24-Sep-01, to lugnet.robotics, lugnet.robotics.rcx) !!
|
