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5 votes

Can you change the sensitivity of an EV3 Touch Sensor?

It is not possible to increase the sensitivity of the touch sensor in-programming. Generally, you can use a lever to decrease the amount of force required. Here the "load" is the touch sensor ...
MindS1's user avatar
  • 1,362
5 votes
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How to make Lego Mindstorms EV3 robot go in reverse when move steering input comes from proximity sensor

Multiply the output of the proximity sensor by -1.
David Lechner's user avatar
5 votes

Two Mindstorms touch sensors: how to determine which sensor was pressed?

I found an answer. I read in a book that I can't fork in a loop. But I can do up to 4 separate threads. So I did 3 threads: Running/changing motors speed based on a variable "i" which is changed in ...
Jacek U's user avatar
  • 101
4 votes
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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
3 votes

Can I use the EV3 IR Sensor with a power functions remote?

The EV3 IR Sensor is compatible with Power Functions 8885 remote the but not the 8879 remote.
David Lechner's user avatar
3 votes
Accepted

How can I use the LEGO distance and color sensor from Power Up with the LEGO Mindstorms EV3?

They are somewhat compatible. The EV3 has 5V on pin 4 of the input ports while Powered Up has 3.3V on pin 4. So there is a potential that the sensor cannot handle 5V and could be damaged. Other than ...
David Lechner's user avatar
3 votes
Accepted

Are there LEGO Hygrometer sensors?

There is not one made by LEGO. However, there are a number of 3rd-party options: Fatcatlab makes a Humidity Sensor (EV3 only). Vernier makes a relative humidity sensor that can be used with the ...
David Lechner's user avatar
3 votes
Accepted

Why is the EV3 Ultrasonic Sensor (45504) out of stock?

Balanc3r is a good alternative for gyro-boy: http://robotsquare.com/2014/06/23/tutorial-building-balanc3r/ However, why do you conclude that the 45504 sensor is out of stock? In my region (Belgium) ...
Michael Verschaeve's user avatar
2 votes

Sensor usage during manual control

The EV3-G programming language has mailbox blocks where it can receive bluetooth messages. You could write a program that until the touch sensor is pressed keeps processing the messages to control the ...
Michael Verschaeve's user avatar
2 votes

How To Plug Detected Light Values into Variables and Still be Usable in Programs in EV3-G

Your example doesn't read a RLI value. It reads and stores a color index value (0 through 8). This wouldn't stop you using the variable, but the value may not be what you expect. Variables are ...
Dean Hystad's user avatar
2 votes

How To Plug Detected Light Values into Variables and Still be Usable in Programs in EV3-G

First guess: the wait for button command is bad practice. Well, not the whole thing, just the use of the middle button. The reason is that that button is also used to start the program. The program ...
dfrevert's user avatar
  • 1,331
2 votes
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Are there any sensors that are capable of measuring audio pitch for EV3?

You may be able to rig something up with a Vernier Sensor Adapter, the Vernier EV3 Sensor Block, and a Vernier microphone. Although the NXT sound sensor can be made compatible with EV3, it would seem ...
Lepidolite Mica's user avatar
2 votes
Accepted

NXT - Mirror motor rotation

A good way to do this is to use a control algorithm with feedback to control the position of the second motor. You can research "PID" to learn how to make your own. Or if you want an out-of-...
David Lechner's user avatar
1 vote
Accepted

Lego Boost distance sensor, what range does it have?

The sensor reports two UInt8 bytes, one in inches (i.e. 0 ... 255, but capped at the maximum range of 10") and one in "inverse fractional inches" (i.e. 1/255 ... 1/1). The actual code ...
Grimxn's user avatar
  • 126
1 vote

NXT Sensors not working

Check for 5V on the two middle pins of the motor connectors (plug a cable into the brick, no motor on the other end, and measure volatege on the contacts of the open other end). NXT/EV3 have separate ...
Marek Lewandowski's user avatar

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