My RCX will not turn on.
Cause: The batteries are dead. Solution: The batteries should be replaced one at a time so that the Firmware software on the RCX is not lost. However, if lost, the firmware can be downloaded again, so it is not a terrible problem if loss of firmware occurs during battery replacement. Cause: ...
When I press run, nothing happens. Why?
If nothing happens when you press 'run', possible explanations include: - It could be a bad download. Try redownloading your program. - If you're using the RCX, you could be on the wrong program slot. Check to make sure you're running the correct program. If not, press the gray button on the RCX ...
Why do I lose firmware every time I change the RCX batteries?
Every time the RCX is without 9V of power (usually supplied by the batteries), the firmware might be lost or corrupted. To prevent this from happening, try these ideas: - While changing batteries, first make sure to have new batteries nearby and ready to be inserted into the RCX. Next, take out ...
Can I use the LEGO USB Camera on a Mac?
Yes! A group of open-source developers created a program called macam (http://webcam-osx.sourceforge.net/), which provides support for USB web cameras in Mac OS X - hence, the LEGO USB camera can now be used in ROBOLAB 2.5 and higher on the Mac platform (OS 10 and higher) The workaround for this ...
My car won't move when I push Run on the RCX.
If the wheels do not spin and car does not move: 1) Pick the car up and now see if the wheels move. If the wheels now move, it could mean that there was not enough power coming from the motors. One way to fix this is to use smaller wheels that do not require as much power to get going. If progr ...
Can I use legacy RCX sensors with the NXT?
Yes. Legacy RCX sensors can be used with the NXT. The Educational Version of the NXT kit comes with a special cable just for connecting legacy sensors to the NXT. One\nend of the cable is the regular telephone cable style NXT connector and the other end of the cable is a legacy RCX style 2 x 2 ...
What kind of batteries should I use in the RCX or NXT?
- First of all, note that there are AC adapters available for both the RCX and NXT, so if you are building creations that can handle an electrical cord attachment, they can be powered by wall-unit electricity. - Recommended AA batteries are non-rechargeable alkaline batteries. Heavy duty carbon ...
When I select “run” on my RCX or NXT, the incorrect program runs.
On the RCX, make sure you are running the correct program number (1-5). On the NXT, make sure you are running the program with the correct name. To change the program you are running on an RCX press the gray “PRGM” button to scroll through program numbers. To change the program you ...
I built a car and can’t get it to turn even though I have programmed it to do that.
If you have four wide wheels on the car, it is very hard for the car to turn. If there is only one wheel in the front, turning is easier, and if you have one wheel that swivels, turning is even easier. The capacity of a car to turn is largely due to its design structure, so work on changing this ...
How can I gradually increase the power level sent to the motors?
Increase the power level setting to motors A and C in certain time intervals, set to 0s as an example (program in inventor). (Note: you may alternatively use the "wait for 1s" block instead of the "wait for time" assigned to 1s with the constant attached.) Set the time between power-level incre ...
My camera image is too bright / dark / red / etc. How do I change the camera settings?
The camera settings probably are not set up well. 1. Open Vision Center (Project -> Vision Center). 2. Click on the Select Camera icon (a camera with a green arrow pointing to it). 3. Click on the small white box at the bottom right of the window. 4. Click on the icon that comes up at the r ...
What is a container?
Containers are like variables, and are used to store values. They can keep count of how many times something has occurred and be referenced as a value. For instance, if you want to change the motor speed as a function of the amount of light in the room, you can use a container to convert the lig ...
I've plugged in my IR tower, but ROBOLAB doesn't sense it. What can I do?
First, go to Administrator and see if USB #1 is listed as one of the COM ports. If it is listed, select it. If USB #1 is not listed, this means that the IR tower driver was not installed properly. The solution is to go to the Tower folder, which is within the ROBOLAB folder on your hard drive, a ...
My USB tower driver won't work.
On some PC computers, the USB tower driver does not install properly during the ROBOLAB setup. 1. Rerun the tower installer from your ROBOLAB CD 2. Download the tower drivers (attached below: tower164.zip) and then run Setup.exe
I seem to lose firmware all the time - what's going on?
Cause: Low battery level Solution: Replace batteries. Cause: Smaller batteries - Sometimes batteries (often cheaper brands) are too small and they can fall out from in-between the terminals when the RCX is moved. Solution: Replace with new, higher quality batteries. Load all the batteries int ...
Can I use rechargeable batteries in the RCX?
The short answer is yes. Alkalines are preferred, but you can use rechargeables. However, there are several disadvantages of which you should be aware. Disadvantages of Rechargeables: Most rechargeables, when fully charged, are only 1.2V instead of 1.5V. Thus, six batteries provide the RCX with ...
