Let's Make Robots!
This platform was built for segway years ago but not working very well, so I decide to remake this into a go-cart type of toy for kids. However, These 2 motors are … Read more

Order cancelled?

I placed the order from marketplace and was charged from paypal but I chack back next day it shows "cancelled".

How does that work now? Maybe you want to shut it off and re-direct back to RobotShop instead of confusing people?

Built few light saber before but this is my first multi color Lightsaber. LED string was finished years ago but never really finish this project and I think it's … Read more

Controlling lot of LEDs in parallel with Arduino & transistor

Hi all,

Got some questions about using trnasistor and resistor with lots of LED all together. I am not good in electronic planning but only drawing sketch out as image below.

Try to using as less resistor as possible so I only plan to use one and I know Arduino couldn't handle that many LEDs so transistor will be used as I know. However, I am not sure how to connect these points as identify in image below from A~G. Can anyone help me or sugeestion how this should be connected and what type of transistors, resistor should be used?

Another walking robot printed from 3D printer and using Arduino UNO with expansion board and BT. This gorilla type of walker should concider as quadraped but also … Read more
Nothing really special for this design. The leg is pertty much the same concept from last quadruped. Still trying to use all pins on Arduino without making own … Read more

Very clean designed DELTA 3D printer

How does it look? Not only the design but the printouts are pretty neat as well.

As I know it start from about USD $1000+

Quadruped, yes, four legs again. I think I am nore enjoy in building robots than programming bots. It just too much fun to see the idea in your brain comes out … Read more
Another BOB in LMR... This smalll guy become next idol for simple robotic and 3D printing practice. Thanks for model … Read more

MP3 shield for Arduino NANO

I got this MP3 shield recently and tried it for 2 days. Things are a little bit funny and strange. When I upload the sample program follow by few instructions, most of time they are not working. But if I keep clicking RESET button on NANO once in few seconds it works after 3~5 clicks.