Let's Make Robots!

Control arm for mobile pickle bucket

I had this 3D printed for my robot, before I realized it didn't include the arm itself:

Does anyone have an idea or source for creating something I can tie this into to control my robot? The body for the bot is 26cm in diameter and the part that attatches to the arm has a little screw hole for where it connects, though I obviously don't have to use that piece. The motors/wheels I'm using are those yellow motors, with the thick yellow wheels and black tires you can get cheap, so they have to obviously clear to move.

Servos for this chassis



which servos I can use with this chassis? Other than the mg996r and MG995.



Hello LMR.

I am looking for help to find a good hobbyist CNC to make some face plate or back plate for electronic enclosure, menaning engraving will be the most ue of this machine.

A full ready to use CNC, or a kit, or eventually to build one.

This is what I am looking for :

- CNC with reasonable dimension, something like 20" x20", but not definitive diemsion.

3D Design work in exchange for parts - PopPet

Hello all,

Just thought I'd let you all know things are going well with PopPet. They are going to be shipped out by the end of this month and all is working out after this long time!

Because I have been so busy cutting and packing them up, I haven't had much time to just muck around and design bits and pieces as add-ons. I wasn't feeling so good today so I sat down and designed this little breadboard holder.

Rc car with arduino

Hi guys, I'm planning to make an obstacle detection rc car where the rc car will have its power being cut-off/reverse when the sensor detects an obstacle.

If I were to use an Arduino to make this project happen, how should I link the Arduino with the rc car?

Idea for robot navigation


I want to make a robot which should play a game. It should detect and grab balls of a certain color in a ground (small play area table made of wood). So it has to move in the play area, find the ball of a specific color and grab it, then find the next ball of the same color and so on..

Join the *LMR 3D Print Club*

Do you have a 3D printer?


Interested in getting prints done, but have no printer?

Let's help each other printing more stuff :)

There may be a 3D printer or someone who'd like to pay for a print close to you..

Affordable stater robot kits

Hi everybody!


I just started looking for a starter robot kit or custom collection of parts to get on robotics.

I will add my findings to this topic and everybody is welcome to do so. Please comment if you have good or bad experiences of the kits mentioned. I'll upgrade this post after reading about these.


The Cheapest:


+ a microcontorller (arduino pro mini?) + motor driver (l293D?)




Nanosecond timing-too fine for the hobbyist?

I recently got involved with an idea that requires timing down to nanoseconds registered across serial Rx. That's a little smaller resolution than an Arduino pumping at 16Mhz can provide. The thing is, I'm having trouble turning up any resources on line that would let me design and build a peripheral device short of a caesium fountain-maybe a little beyond what I could rig on the bench, but maybe I'm just not searching right.