Let's Make Robots!

$1 dollar touch panel?

Sorry, this is all writen in Chinese but I guess you guys still get the idea.




32 servo controller / arduino sample code

I wonder if any LMRtians use this servo board before. Got this one long time ago but haven't use it since SSC-32 works pretty good and I thought this board probably works the same way. Unfortunately, it's not. I have connect RX/TX to Arduino but the code doesn't work at all. The manual doesn't provide any sample code for Arduino but someting like:

He modified this ground unit with machine gun. Ok, first of all this is not my robot. It's from one of my buddy ShaoPing @Taiwan who doesn't speak English and shy … Read more


One of my friend who made this back home Taiwan. Thought this is kinda fun so I post it up.

Is there a device convert webcam USB to A/V adapter??

I know there's something to convert A/V signal to USB like this:


But is there any device convert up sit way from USB to A/V? What I want to do is plug any webcam to TV via A/V cable.

Home made tracks + brushless motor

This 40A brushless motor kinda surprise me that they really works. Well, for now at least. I don't know if they works with 2 belt in different directions. Gotta go get 9 teeth sprocket for another motor.

The reason why I use brushless motor is because the controller is way cheaper than those high power brushed motor speed controller(50A+). Could anyone tell me why they are so fxxking expensive? like $400~$800 USD??

Multiple bend sensors for Arduino

I am trying to build robot control by finger movement so I choose flex band sensor. Anyone has suggestion how to wire it up?

I tried 2 sensors, the A0 sensor works but A1 doesn't. I think the way to wire them up is tricky and confused me. Single sensor was easy, but up to 2 I have no idea how it works.

Here is the code I use:


Anyone using Thing-O-Matic 3D printer in LMR??

Yeah, you can LOL at this crap. This is what I got for first print "20MM cube".

Before I got the whole thing working there are so many detail I have to adjust. It has too many versions on parts and instruction is every where. However, I got it to print out SOMETHING finally.

I2C on Arduino Duemilanove / Mega


It's been while having this strange problem and it seems only myself having this issue. All my Arduinos atmega328 (either offical or mutants) couldn't work with LCD correctly but MEGA works perfectly fine. Recently my project are using WIRE library a lot and they seems not function well. Especially after execute the Wire.endTransmission(); in the line everythign stopped until hit RESET on Arduino.

Program freezed after Wire.endTransmission();

Has anyone ever seen this problem when using WIRE library? Recently I am trying MP3 player, RTC and other device with strange issue and it all points to when I use wire library the process halt right after the line "Wire.endTransmission();"

For example: