TechnicAddict

Very thoughtful and beautiful build, Lox Lego - well done and kudos! Nice cockpit details and the chromed inline-6. Love those BMW M cars! Made me want to convert my GT3 RSR (42096) that's been sitting on a shelf collecting dust into an RC! I suppose any motor will do for the drivetrain (1-speed without transmission will do for me), but steering might be a bit more challenging as it needs to be very precise and auto-center. What did you end up choosing for the steering and are there good resources that list all the choices for steering servos and how to compare them when choosing? Are there genuine Lego parts that will do the job given the limited room for this particular model? Thanks much! - TA

Yeah Lok24, I noticed that. I think someone made an analog joystick out of that, pretty nifty feature!

Appreciate the note Lok24! With some unexpected inspiration I managed to use a color wheel with a color sensor to replace several touch sensors so I can build with exactly 4 sensors now. This means I can use a single brick and not worry about cross-brick communications. This will allow me to focus on the build and core functional coding. I’m going to give it a try with a stock EV3 and the standard Mindstorms EV3 drag-and-drop programming software. It should do the job. I also looked into PyBricks, pretty cool and will switch to that if the current plan does not pan out. I’ll keep the folks here posted if anyone is interested! Cheers, - TA

Hello all, this is my first post to this forum so apologies in advance for any poor etiquette. I am getting back into Lego after decades of absence and I am learning NXT from scratch and essentially a newbie. I am doing a MOC build that requires coordinated action and bi-directional communication between two NXT bricks, via Bluetooth I suppose. However, I am having quite a bit of trouble when I am testing out these capabilities. I have a few basic questions I wanted to see if anyone can help: Let's say I manually connect the primary NXT to the secondary. When I run a program right after that I could send messages (Numbers, not text) from the primary to the secondary. However, I can't get the secondary to successfully send a message back to the primary. Are BT messages inherently uni-directional (i.e. from primary to secondary, when primary is the device that initiated the BT connection). Do I have to disconnect and reconnect BT after I download a new program to the NXT? I find that the uni-directional messages don't even work after a new program download to either the primary or secondary. Do text messages work over BT? I'm using the Mindstorms NXT GUI to program the brick, and I'm having trouble sending text messages across BT - can't quite figure out how to make it work! Are there better programming tools other than the Mindsotrms NXT GUI? I find the drag-and-drop logic extremely convenient, but it's really slow when dealing with complex logic or calculations. I tried Java with LeJOS but I don't quite seem to find any support for NXT-to-NXT communications via BT. I also can't seem to figure out how to do precision motor controls with LeJOS. Their forum is closed to new users and their admins don't seem to be replying to requests to join their forum. Would I have better luck with EV3? Seems like there is both BT and WiFi support. Does brick-to-brick communication work better when EV3 devices are connected to each other via WiFi? For additional context, both NXTs are running 1.31 Firmware, AVR/BC4 version 1.01 and Build 1903121214. Any help will be appreciated! Thanks, - TA