Lok24

The motor speed is in a variable. You can change the value of that variable either via poweredUpApp Controller or via remote control. I know some who use this or asked for.

But you showed some python code here? Anyway: In the menu bar you have the home-symbol, an open scratch project and a "+" sign Click on "+", choose python, then you have a python project and the book symbol.

Hi all, the original post reflects the costs and the power supply. But in fact the systems have very different properties beside that. So a recommendation always depends on the personal requirements. To me an argument against 9V is that the cables are too old an the insulation is often demaged.

Ah, i missed that in the LEGO Documentation ;-) I only have two "Vernies". Thanks for the hint.

I still wonder what is the idea behind connecting the remote to the Move Hub? You only can run the two internal motors with full speed. That's not that useful?

Hi, here are some hints: Concerning Hub: one should not look for "88009" but for "Catalog: Pats: Electric, Battery Box: bb0892c01 LegoElectric 9V Battery Box Powered Up Bluetooth HUB with Light Bluish Gray Bottom" This is about 30$, new, but as you say quite rare in US. (one is the "set", the other the "part") Battery based systems you can also use for cars etc. (the other eleven months...) And with pybricks you do not need any Smart Device to run a train in circles. But, for example, it could run 3 three rounds and then pause for a while and then continue. And so on. You would need additional parts for the other system to archive this. But that all depends on your needs.

You can use them ;-) Look here: https://www.eurobricks.com/forum/index.php?/forums/topic/79312-narrow-gauge-lego-train-including-points-etc/&tab=comments#comment-1515112

Thanks for your response. Well, the problem is: The bootloader is seperated from the firmware, which is fine as you can never destroy it. But when the hub was released there was no L-Motor yet.... And know you can't correct this error, because the FW does not include the bootloader. About the information from LEGO: I agree to all your points.

Hi, yes, I think that's normal (but not ok, of course). The Bootloader doesn't expect a L-Motor..... Do the following: remove batteries (the hub is still on, LED is dark)! disconnect all motors or sensors put in batteries hub should be turned "off" then press green button 10 sec till led is blinking pink(bootloader), hold button pressed start App, process is starting, approx. 1,5 min, LED on Hub changes red, green, blue (you can now release the green button) reconnect motor try app

Hi, my two move hubs work as described. Press hub + remote button (better simultaneously, but perhaps not necessary) shortly -> both blinking white And while blinking white Press hub + remote button simultaneously again shortly > both blinking white -> connected This is just as Jetro described. "You need to press the start button on both devices simultaneously after starting them to establish the connection" I reloaded FW, it's still 2.0.00.0017 Do you have different FW?

Hi I 'm not sure what youe are looking for But yout find lots of descriptions and examples (also transscription from Scratch into python) within the mindstorms software? You click on the "book"-symbol on the most right of the screen.

Very nice! Perhaps you may want to have a look at me soloution: https://www.eurobricks.com/forum/index.php?/forums/topic/79312-narrow-gauge-lego-train-including-points-etc/&tab=comments#comment-1515112 Scrolling a little bit down you find a picture of the engine

Yes, indeed. USB isn'really unsable. It's much too big, too long and so on. And the connector is placed wrong, as your picture shows you have to remove the complete box to use the plug.

Yes, you could check the legoino-library

it's hidden very well, under "device-guide" here's the link to the german page https://www.lego.com/de-de/service/device-guide/mindstorms-robot-inventor/ or for netherlands https://www.lego.com/nl-nl/service/device-guide/mindstorms-robot-inventor/

yes, it has.

True. But where is the problem with that? Therefore the RI Software offers an area to show variable values and sensor values togethet with your program, which is much more useful. I know what breakpoints are, but don't know why this discussion comes up with EV3 and RI. Did you ever set up breakpoints with a python-program running in different threads? As far as I remember you have to start pbc instead of your program. It's not that simple. As you say: it's not common with EV3. There are some workarounds, like inserting a loop to expose values etc while looping. But setting breakpoints isn't simple in general, because they often stop your program at a certain point, but don't infect other threads running. Yes, it has to be connected. As with the EV3, because it's nearly impossible to read debugging values on the screen of an EV3 on a moving(!) robot . And you never see your values and the sensors on one screen, you have to switch the display, while machine is moving around.... For huge projects you should program a dashboard or something like that, cause picking Infos for 2-4 small screens isn't funny. Anyway: there are no "breakpoints" in the meaning , that this is functionality of the IDE, neither with EV3 nor with RI. The only thing that's missing with RI is to write "messages" to a screen, cause there is none.

I see. You can add stop or loop/wait everywhere you want to to examine what happens here and in which state the machine is . Like with the EV3. Or what do your mean with "breakpoints" with EV3? But obviosly you're looking for something different, so it would be good if someone else could give a precice answer. And why this in conjunction with the BT, I didn't catch yet. I'm still thinking about RI instead of my 4 EV3, perhaps that would give me a hint.

No, I'm asking why this has something to do with bluetooth. As far as I know you can see the values of motors and sensors, check status of variables and so on. Am I wrong?

Yes, in both EV3 sets the cables are included. But they differ in what's included: the 31313 has a infrared sensor instead of the ultrasonic, but comes with a remote control(IR)

Very nice!

That's the problem. If you cant't describe what it should do nobody can tell what you need. As an example: if you want to build a car your need two motors, one for steering, on for drive. How many motors do you need? I have no Idea. In Summary: you can use EV3, RobotInventor or PoweredUp. But they differ in how to program and what you need besides them.

I don't have the RI, but looking at the software this is wrong. Why don't you install the SW to check out? But you don't have any onld huge programs? Why? The day when the Robot Inventor was realeased....

yes, because you have the \n in "write" and and automatic \n in "print" Just found that to remove the \n while "read" https://stackoverflow.com/questions/15233340/getting-rid-of-n-when-using-readlines Or just read the complete file without loop....... HTH