Hot answers tagged

11 votes
Accepted

Old RCX Wires Have Become Grey and Brittle

This is a common issue with the older Lego 9V cables. Lots of sources, including myself, have experienced the same thing - this particular chemistry of insulation ages poorly, no matter how well it's ...
MindS1's user avatar
  • 1,362
8 votes
Accepted

How to load an RCX from a modern system?

Buy a USB to Serial adapter. There are USB IR Towers, but the drivers are only for older version of Windows. A new USB/Serial adapter, on the other hand, should be compatible with Windows 10 (Windows ...
David Lechner's user avatar
5 votes

How to load an RCX from a modern system?

Honestly... it was WAY easier for us to find a computer on eBay! We bought an IBM ThinkPad with Windows 2000 installed on it. We won the auction with a bid of $28 and with shipping it was the best $...
Christina Graves's user avatar
5 votes
Accepted

Lego RCX to NXT converter cables not working properly with EV3

These cable don't have anything connected to pins 5 or 6. This causes the software running on the EV3 that detects which type of motor is connected to think that there is nothing connected. Since it ...
David Lechner's user avatar
4 votes

Where can I download the software for old RCX-era Mindstorms sets?

There are a lot of ISO files with the Robotics Invention System (RIS) software on them. Here's one link: http://www.brickfactory.info/iso/ These will only work on Windows.
Henry's user avatar
  • 41
4 votes
Accepted

Use legacy RCX sensors with EV3

Unfortunately, you cannot use the LEGO 8528 (NXT to RCX adapter) cable with sensors on the EV3. You can use it with motors though. This is because the adapter cable only connects to pins 1 and 2 on ...
David Lechner's user avatar
4 votes

Can Power Functions components work with the RCX?

The RCX uses "electric system 9V" style connectors. These are not compatible with power functions connectors. The "electric system 9V" connectors have the connections built into regular lego studs (...
Peter Green's user avatar
3 votes
Accepted

Can Power Functions components work with the RCX?

RCX is compatible with the older 9-V system that came before Power Functions. However, since PF motors are also 9V and still unregulated as the RCX motors, a simple conversion cable suffices. The ...
Michael Verschaeve's user avatar
3 votes
Accepted

What do I need to connect an old RCX 2.0 to a computer and is it worth compared to just buying a new one?

Modern hardware/driver support for the RIS is limited, but it's definitely possible to get it working again. The main obstacle is transmitting programs to the Lego RCX brick. The RIS 2.0 came with ...
MindS1's user avatar
  • 1,362
3 votes

How to load an RCX from a modern system?

There are a few hurdles to jump through. For the IR tower, you need one of the following: Infrared Transmitter with USB Cable (cheaper BrickLink listings on the part page) (uses USB instead of 9-pin)...
Alexander O'Mara's user avatar
3 votes

Could not open serial port or USB device, RCX on Linux

Just as an aside you can also do the following: sudo ln -s /dev/usb/legousbtower1 /dev/usb/legousbtower0 That worked for me, and my challenge now is that there is no firmware :-)
Paul Duncan's user avatar
3 votes

Where can I download the software for old RCX-era Mindstorms sets?

RIS 2.0 ISO now up on archive.org https://archive.org/details/ris20
user13982's user avatar
3 votes

Lego Mindstorms RCX RIS 2.0 IR tower Windows 7 / XP driver

Please note as of 2022 the accepted answer NO LONGER WORKS (RobotC.net no longer hosts this file). An equivalent tower driver can still be found from here: https://www.philohome.com/sdk25/sdk25.htm As ...
MindS1's user avatar
  • 1,362
3 votes

How to control a RCX from a Mindstorms NXT

I know this is 3 and a half years late, but I figured I'd throw in my two cents. Attach an NXT light sensor and an RCX light sensor facing into each other. You can communicate bi-directionally by ...
MindS1's user avatar
  • 1,362
2 votes

Where can I download the software for old RCX-era Mindstorms sets?

there is also coach 5 & 6 software special for education. from CMA / amstel Institute ( University from Amsterdam). 1999 for the RCX1.0 and the RCX 2.0 https://adoc.pub/handleiding-coach-5-...
aap noot's user avatar
2 votes

Where can I download the software for old RCX-era Mindstorms sets?

I have RIS 2.0 in GERMAN Language, which I backed up for myself and all other old LEGO Fans and uploaded it. I run it on Virtual WinXP, which is set up with Oracle Virtualbox. For the old RCX Tower I ...
Paddy's user avatar
  • 21
2 votes

RCX firmware download problem

How about running Windows 98 on a Raspberry Pi device and using the Lego IR USB tower that way? Here is a tutorial on running Windows 98 on a Raspberry Pi. https://magpi.raspberrypi.org/articles/run-...
Patrick Wood's user avatar
2 votes

RCX firmware download problem

Just went through this exercise on a Windows 10 64 BIT PC. RCX 1.0 w/ serial IR transmitter. I am able to get the RIS software running w/o issue on Windows 10 via compatibility mode (256 color, Win ...
Matthew Dalton's user avatar
2 votes

Lego Mindstorms RCX RIS 2.0 IR tower Windows 7 / XP driver

If you’re attempting to use the USB RCX 2.0 on Windows 7, 64 bit OS, I used the free version of Oracle VM VirtualBox. I installed Windows XP. In the settings section of the VM software for the XP ...
dvelozjr's user avatar
2 votes

Lego RCX 1.0 brick relationship to Robotics Invention System (RIS) & RCX firmware versions

The main differences between the versions were: Firmware - although later versions of the firmware were backwards compatible with the earlier bricks Power Adaptors: RIS/RCX 1.0 had a power socket on ...
Zhaph - Ben Duguid's user avatar
2 votes

Lego RCX 1.0 brick relationship to Robotics Invention System (RIS) & RCX firmware versions

There is no significant hardware difference (*) affecting software between the RCX bricks, so 1.0 brick is compatible with all firmware and RIS versions. (*) Known hardware differences: RCX 1.0 ...
Philo's user avatar
  • 2,713
2 votes

RCX Windows 10?

I have successfully used RCX with a USB to Serial converter (hardware) to connect to the tower, and Bricxcc software with Windows 7. The Bricxcc is free software. I found that I had to start by ...
Fenn's user avatar
  • 71
2 votes
Accepted

Could not open serial port or USB device, RCX on Linux

New here but I just had the exact same problem you did, I can't be 100% sure this solution will work for you, but given that I also used the ubuntu repo version of the software I imagine it will. ...
Drountian's user avatar
2 votes

How to load an RCX from a modern system?

The USB RCX Tower only has 32-bit support, which doesn't work on modern Windows versions. It has been reported to work on Linux though (I didn't try that myself). I own a serial USB RCX Tower which I ...
Rijk's user avatar
  • 39
2 votes

Lego Mindstorms RCX RIS 2.0 IR tower Windows 10 64-bit driver

Robotic Invention System 2.0 Hello. I found this blog as I just upgraded my Mac with an Intel processor to one with an M1 processor. I was running RIS 2.0 and Mindstorms NXT on Windows XP through ...
Alberto Rodriguez Baez's user avatar
2 votes

Serial tower RCX 1.0 works with NQC but flakey with RIS 2.0

What a strange issue. I'm not sure the exact cause, but I have a few troubleshooting tips for you to try: Make sure the serial tower is set to "Long Range" mode (the little switch on the front). ...
MindS1's user avatar
  • 1,362
2 votes

Old RCX Wires Have Become Grey and Brittle

At a guess the plasticizer used to make the cable sleeving flexible seems to be evaporating. Perhaps this is common with natural rubber (latex) and vinyl based wires. You could try the plastic ...
Dan1138's user avatar
  • 1,103
2 votes

Old RCX Wires Have Become Grey and Brittle

While the answer by MindS1 is the standard solution that comes up with internet searches, I've found it is possible to use the wires usually used for Arduino jumper wires. These are slightly smaller ...
Holmez's user avatar
  • 147
2 votes

RCX only accepts short programs

Summarizing our discussion from the comments: System is running Windows XP SP3 (not a VM) with an (unknown) USB to Serial converter connected to the Serial IR Tower. Problem is that most interactions ...
MindS1's user avatar
  • 1,362

Only top scored, non community-wiki answers of a minimum length are eligible