Let's Make Robots!

Is my new robot a patent infringement?

I am new to LMR and have posted a couple of projects. I just finished a new robot based on John W Jamesons Walking Gryo, which he patented in 1981 and sold rights to some company. Mine is based on his idea of using a gyroscope (flywheel) precession to generate foward robot motion. I just finished my video and draft of my crude working version of his idea and realized it is infringement. So, it would not be wise to post my draft, right?

I will carefully consider all responses.


I am posting a video if you are interested in seeing it work.

Arduino UNO R3 SMD or IC

Hi All, I am very new to this hobby, I am looking to buy the UNO R3 board but have noticed there are 2 types, one with Microproccesor as an smd , the other with a plug in chip version of the proccesor,

Which one of the 2 is preferable please.



Solar outlet Power

Hey friends! Work is still slowly going on my robot project but something else came up that I could really use some ideas on...


What I'd like to build is a solar powered AC outlet (110v US standard). Ideally it would take in power from the sun, store in a battery, and go out to an outlet. A friend of mine is doing some major go-green efforts and I wanted to help out, however Im a bit rusty on my electrical engineering lol.


Electronics question: LEDs on a slightly unpredictable power supply

Hi guys, Way off topic, but you guys have been so helpful in the past, and i KNOW you know the answers, so one cant but ask!

We are doing a camper van conversion, and i have found some sweet "decking lights" for internal lighting.

They are sealed, "3LEDs and a resistor", units, designed to run at 12V (off a transformer, the junction box is a simple parrallel arrangement)

Problem is, the vehicle battery will produced between 11 and 14V depending on charge condition and if the alternator is running.

Dagu Trex Controller Issue [SOLVED]


I create a new forum to talk about a trex controller issue I encountered after one hour of use of this controller. I mounted the dagu trex controller on the dagu wild thumper chassis with the 30+6mm given spacers . For testing purposes, I connected the trex controller in LV and no external switch mode (2 jumpers on) with Zippy LIPO 2S batteries and a D8RII FrSky receiver. The batteries are in series on the batteries input. The channel 1 and 2 of the receiver (which I programmed to be throttle and direction on the 9XR TX) are connected on the TX/RX pins of the controller.

Advice on servo motors

Hello everyone! my and a friend are working on a project for making a replice of the sentry turret from a game called Team Fortress 2, although the specific details of that dont matter xD we are currently having trouble in locating servo motors for different purposes of the build, so i was wondering if anyone had any advice or links on where i could find servers with the following specifications:

secondary level arduino electronics kit?

i'm wondering if anyone sells a kit of components for like a secondary level of hobbyist... like a next step up from an arduino inventors kit.  Something that includes a bunch of components such as:

Move robot along curved path (with differential steering)

I am building a robot that looks roughly like this:

(Image taken from this site and modified by myself.)

LPC dev tools first release

Some of you are aware of my ongoing project to develop a good toolchain for the NXP LPC1114 and related processors.  I have finally posted an initial release of what I have so far.  It is really rough, but mostly works.  If you are interested in getting a head start or if you just want to take a look at what I'm doing, the files are here:


Feedback is welcome.  Please don't tell me "your documentation sucks," I already know that :-)


Dagu Micro Magician Robot Controller V2

Hi All, my Name is Peter, this will be my first post.

I have this controller, Micro Magician,  and was woundering, to run an I spy tank or similar, do I need to add a Motor controller or can I just use the motor out terminals on the Dagu Micro Magician Robot Controller V2