Let's Make Robots!

Review: The Service Droid kit from Dagu

I have received my Service Droid kit along with the Rover 5 robot chassis on a Monday evening. Excited, I opened up the package to reveal 2 big boxes, one with the Rover 5 and the other with the actual SD kit. The base comes assembled, with a battery box, a screwdriver (with a magnetized Phillips end), an Allen key (hex wrench) and a little bag with silicone lubricant. The droid kit comes with lots of parts grouped in separate labeled bags for easier assembly. To do the assembly, I used a cutter, a plier and the screwdriver from the Rover 5 box.

radio controlled hexapod walking robo duck
Using a
This is a cool little project I'm doing as a gift to a guy who loves robots and rubber ducks. It just makes sense that the robot technology would take over the … Read more
Just completed the Tamiya "Remote Control Robot Construction Set (Crawler Type)" kit, which you can find … Read more
Price: $0.99 USD

 Collected by one member
This piezo sounder is an inexpensive way to add sound to your project. The wide operating voltage of 1 – 30 V and low current draw (5 mA at … Read more
Plug in up to 4 servos - the servo wires will be extended through a single CAT6 cable
Now there is a clean and simple way to extend servo wires using a CAT6 cable. These CAT6 extension boards allow the user to plug up to four servos into the row pins … Read more

Propeller Boards to use in Robots

As many of you are aware, I'm a big fan of the Propeller. I frequently get asked various Propeller related questions in the Shout Box which I'm all too happy to answer. However, I thought it might be a good idea if I made a more permanent record of my Propeller board related suggestions.

 Sorry if I hurt posted. this is my first post, and I'm not very good in English :)    My very first robot.... I know it's… a just toy, it's a real stupid, to … Read more
  Penta-Bot is a special robot circuit that can be used for five different robots including; line follower robot, sumo robot, obstacle avoider robot, light … Read more
Surface-mount vibrating pager motor from Sanyo. 1.3V, 90MA, 9000RPM Read more
W.A.L.T.E.R. is my experimental and learning robot platform and will never be complete.  This is the first robot I built, back in 2006 - W.A.L.T.E.R.. It was named … Read more

Picaxe PWM and servos

I have tried using picaxes PWM outputs on 2 robots now with limitted success. The biggest problem I have is that the PWM frequency although adjustable is very high (typically 16KHz with a 16MHz resonator). This causes the windings of the motor to have a much higher impedance resulting in poor torque. When I use the setfreq command to drop the clock speed very low (500KHz) then I get good torque even with a low dutycyle but the processor is so slow it is almost asleep.

Jinnarin's First Robot

Hi everyone. After weeks and weeks of tracking down parts and waiting for them to arrive I have finally started construction on my first robot today, i'm so excited! I am following Fritsl's tutorial "How to make your first robot". I would like to thank Fritsl for inspiring me to make a robot!! This is something I have wanted to do for a long time but never knew how.

 Now on to the pics!! (sorry for the low quality pics, I am hoping to get a new camera next week.)

YDM for sale Make me an offer!

Hello Everyone,

I have a version of the YDM for sale.  It was first built by an engineer in Toronto and then shipped to Fritz to Denmark for completion. I originally wanted this YDM for my school robotic shows but it is too small for the student audience to see.

It works perfectly.  Although it does have one of its front drumming sticks bent due to shipping.

I will probably put on eBay if I don't receive any offers here.

Email me with any questions.


Back in 2011, I upgraded a standard Parallax BOE-Bot with my RoboProp propeller based robot controller.. I wrote a two part article for Servo magazine about the … Read more

IR phototransistor

Hey LMR:

Has anyone used these?


Calculon picked up a bunch for cheap, but hasna figured out how to work it. His is an l7819, though. He's wired it up like so:


Which doesn't show any kind of result. Any ideas?

Before you ask: yes, calculon is a friend of the Google :>