Let's Make Robots!


Update 1:   Its been almost a year since I post v1 of my robot. Wow! After being lost in RC world of airplanes, quadcopters and helis for a year I … Read more

Rc car re-interfacing with a home pc

Hello,i am quite new to the world of robots and so to get started i bought an rc car from a local store.The key thing i want to do is to change my rf remote so that i can use it from my pc.Now is there a way to change its board or rf remote configuration or the second thing i may think is to buy a new board and interfacing it to the pc via provided interface.The chip used is in the rf remote is TX-2B .Plz guide me i really wanna complete this project.............:(:(:(

Robotic Arm Control

I have built a robotic arm. You can see it in the robot section. It is called IPTUPED.

Now that it is built i can only prgram it to pick up something that is in the same time. I need a new control method.

Due to the fact that i am pretty new to this i need some ideas. Basically i am asking you guys if you can help me find a good method. I have seen wii and arduino, nd rc. I need a good tutorial online somewhere that can help me control it. So far i have only been able to find a method that can control 2 servos. I am using 4 and maybe 5 in the future. Thanks for any help.

Balances on 2 wheels, Remote Controlled
Using a
  HI guys, This is Balance1, my balancing robot, I built balance1 to demonstrate that a digital controller I had designed in MatLab actually worked in the real … Read more
Holonomic move, remote controlled with a RC transmitter.
Using a
This is a hexapod robot based on OpenSCB, an open source servo controller. All code and schematics will be provided under an open source license. It's still a work … Read more

Question about batteries

Hi again,

I have a RC Apache helicopter from JayCar (Australia) and 'I think' the battery is dead, seeing it won't turn on. I know its has 7.4 volts and is 850Ah, but to replace the battery would cost $50.

Would it be possible to replace the battery with 5 1.5v AA or AAA bateries instead?


rc plane electronics - as cheap as possible


im thinking about making a rc plane workshop for them local kids in the neighboorhood in copenhagen.

i have an ok understanding of the plane design but i miss general info of the electronics.

i would like to use as many salvaged, recycled or second hand materials as possible.

i have found the following kit for the electronics which is kinda cheap:


but its only the receiver and not the controller.


RC receiver question

Hey LMR!

I need your help on this one: Above is the RC setup I'm planning to use in my next project. I extracted it from a wrecked RC plane I got my hands on. As you can see it's quite basic: a 4-channel receiver, speed controller + motor and servos. I know that each controller function corresponds to one of the four designated outputs on my receiver. You'll notice there's also another output port, labelled 6/B:

Break a leg, Wild Thumper!

I experimented a bit with video. The weather was perfect for it, as reported earlier.

One laptop with webcam streaming live from my balcony to ustream.tv. And my little 10fps camera on board. Then fool around until the batteries run dry.

Afterwards I found a problem in one of thumper's "legs". It limped. Exploratory surgery confirmed the great fear: a gear is missing some teeth. Oh well, we'll always have the photos.

Controls a small RC car via PC with image processing
Small project to control an RC car via pc. I've placed a small RF pinhole camera in the car so I could be used for manual driving and for image processing. Here are … Read more

RC robots

I was wondering if there is a section here on RC robots?

I have a 'my first robot' type robot and eventually want to be able to RC it as well as make other RC robots. 

pull things with intelligent traction control
Using a
What will it do? - Try to pull a heavy object for a given time or distance - RC with driving aid (Hybrid) Read more

The perfect recipe

Some say I know all about computers... Some say I love my hardware more than my girlfriend... All i know is that my desk is always filled with laptops with different OSes, wires, bare PCB's, components and an arduino. That sounds like the perfect recipe for a robot!

giving life to dead rc vehicles

I’ve found this two rc vehicles on a junk, they are in a very bad condition. The big one has the DC motor burned out, I will try to replace it.. brushless motor maybe.


They both have two different gear mode (hi and low speed), I am wishing to try it out.


This is the dead motor..

drive around normal RC , but takes over control incase of an obstacle !
Using a
this RC car traverses around normally but takes over control in the case of an obstacle in front of it , that action drives a custom built polarity reverser to move … Read more
Moves faster than Trata, on snow and ice
Update: Thank you for asking me to make a jump with this, jip. Now both Trata and my camera are broke. (Last video) - But hey - Snow is melting, who needs Trata any … Read more
Update: Arh! I wanted to shoot a new video in sunshine and everything. So I found a time where I could film it, and I started by having a little fun.. and then it … Read more

How Should I Make My Robot Remote Controlled?

Hey all!

So I'm working on a robot that I will enter in to a state wide competetion and it has to be remote controlled.  I have no experience with making a remote controlled robot so I was wondering if ayone could suggest a good receiver and sender for a robot with 4 outputs.  Also I would like some tips on how to hook it up.  Thanks!


Main character in my GBxxLMR "universe"
Using a
Update: Same video, but now also streaming from a different provider, as some complained that they could not see the first one. I had 2 weekends to complete … Read more

RC car controlled by PC or PDA using wireless communication

Hallo Everybody !

This is my very first post ! ))

I am doing the robo-project in the university. The main task is to build a robot using wireless technology that can be able to perform number of tasks that are sent from the PC.

RC power for my picaxe

I'm using RC ESC's to drive the motors in my current robot project. These speed controllers has a built in power regulator (called a BEC) that is meant to power your RC receiver. I've measured and the voltage produced is a steady 5.03 Volts.

Can any of you think of a reason why I couldn't or shouldn't use this as power source for my Picaxe 28x1 ? 


Can't seem to insert hyperlinks with Opera browser on my old iMac, so here are a link if you wanna read more about RC ESCs or BECs


Marry RC-Car and autonomous control

Has anyone been combining radio control car technology and autonomous controls?  I found the contribution by fritsl http://letsmakerobots.com/node/928.  It is over a year old now.  What has been happening since then?

finding cheap RC ESC (speed controller)

I love RC ESCs. They are electronic speed controllers that you connect to a servo output on a RC receiver or a micro controller, and they give you full step free control over a big motor in both direction. Most of the ones made for RC cars work in the voltage range 6-8.4Volts, but there are several alternatives for people who plan to run up to 24 volt motors in almost constant stall at a gazzilion amps (read robot war contenders).

But I'm the eternal cheapskate, and wants the cheapest there is.. So far I've found this 

This was basically just a test to see if the rubber track set from Tamyia would fit on a Mr. Basic frame. It took about an 30 minutes while watching TV, to test out … Read more
run fast
My unsuccessful Mr. basic competitor. I was very unlucky with the Dagu kit I got and still haven't managed to get the chassis running normal. With the normal amount … Read more

'Axe as RC speed controller

Would it be possible to connect the output from a RC reciever to the digital input of a pcaxe 28x1 board and controll the motor outputs?

Of course it's doable, that's not really the question. But does anybody have any thought regarding it? Has anybody done it? I presume the signal out from the RC reciever is a standard Servo-signal. I know CtCpassed a signal from a RC reciever through his 28x1, but I don't wanna controll servos,I wanna controll a couple of DC motors.


06, March, 2009 first test                     Read more


This is my first attempt to make a custom remote controller, and also my first customized Arduino.
After seeing this post made by ObbBot I wanted to try to make one myself.

I figured that if I purchase one remote controller it would be cheaper than buying two of these and paying shipment to Portugal.

So, ripping the guts from a game remote controller I get two joysticks, a couple of buttons, two nice motors and one small lcd.

Since I started messing with robotics that I wanted to build a tank, and finally that moment arrived when two Tamiya thread kits and a Twin Motor Gearbox arrived. … Read more

RC RF directional beacon

I am still wondering if it is possible to create a simple, cheap, fairly accurate, directional beacon for outdoor use. And I keep thinking I should try to re-purpose an RC transmitter. So here it goes:

Would you deem it possible to create a directional antenna for an RC transmitter?

Would this antenna be able to rotate? Fully continous, or just 360 CW followed by 360 CCW?

Which RC system would you consider? There are so many frequencies in use. And modulation types.