Let's Make Robots!

radio

T'REX robot controller

 

The T'REX robot controller makes controlling robots easy!

The Arduino compatible controller comes pre-programmed with sample code that lets you control it with a supplied Android app, Radio Control or with an external controller via I²C.

Specifications:

Interfacing from PC to Arduino via PWM radio

Greetings fellow LMRians,

I am in the planning stage of building a quadcopter, which will be my first ever flying robot. So excited!!!! I have a question for you all: how would I interface some sort of PC control to the machine?

DIY RC, Moving to Arduino, RasPi, and other questions

I have added more questions to the end of this, so please have a look.

Hi

I sort of started this question on another page, but I thought I'd move it here so I'm not hijacking someone else's page.

2 questions here;

1: I'm looking to move from using picaxe to Arduino. Can anyone give me any pointers on where to start? (I know this question's probably been asked elsewhere on LMR)

uses data radios to transmit and receive joystick and button info
This will get used for a small boat project (not the big boat project I work on; something to help with testing things for it).  Out in the street this is testing … Read more

Cluster Bots

Hi this is just a forum for any beginners who want to build Cluster Bots

Radio mast navigator - idea :)

Hi, just got this idea, and thought perhaps it would interest one of the clever guys out there. Hope is that a vendor will take this up, after a couple of clever LMRians have talked more about the details that I am too stupid to get into :)

 

Super Capacitor in solar power supply - a few queries

I intend to build a remote 'weather station'

The station will:

  • Be completley independant of any external power, ie, it will produce its own power via solar cell(s)
  • Measure temperature only
  • Transmit its finding over an RF link to an indoors reciever

Instead of using a rechargeable battery supply with charger circuit, i have decided to use a 35F, 2.7V super capacitor to smooth and store power.

Building a Universal RF Remote - Questions

More Recent UPDATE: the competed remote can be found here. Thanks to fritsl and rik for their respective helpfulness.

UPDATE: Attached (and blurrily pictured below) is my schematic that i think will work for this remote. Yes I drew it in paint, Yes it took too long:

*The "To Breadboard" leads are included so that the remote may also serve as a portable power supply.

 

 

 

Radio Controlled Servo?

I am completely new to robot building, and electronics in general.  I am currently working on a homemade airsoft claymore.  It is designed to be toggled via a wireless remote control. The issue is that I don't know much about wiring remote controlled systems. I've built a few remote controlled cars, but they were from kits, so I really didn't understand the electronic aspects: I just assembled them by following the instructions. Here is my problem with my current project:

High-End Radio Gear

My remote control car met the end of its life last week. (smashed into a wall...) So, i salvaged everything i could, and found some interesting stuff:

A Motor Controller

Transmitter/Reciever (can control 2 servos)

5 batteries, ranging from 1500 to 2000 mAh

I also had lying around:

2 radio transmitters

a second switch for the motor controller

 

I need:

-arduino proto shield

-lots and lots and lots of polymorph. like a shoebox full. a shoebox from someone with canoes for feet.

DIY wireless, possible or not?

Hi guys!

Sometime ago i had an idea in my mind about a DIY wireless link between, say, two MCUs. But the point is that i never tested it. I just wanted to know what you thought about it and if you think it could work (you are the electronic gurus after all :) )

It should work like this.

-Receiver has the antenna attached to the base of a darlington, and the signal received goes to the MCU (if not enough maybe i could make a bigger darlington, maybe three NPNs)

     (In the video,you can see ARB walking.  Watch it, its pretty neat!) Read more

wanted: fm stereo receiver

This is an electronics question that has little to do with robots. But this forum seems a good place to ask it anyway.

For an upcoming diy project, I am in need of some advice on integrated radio circuits. For my 93 yr old grandmother I hope to build a radio that can do this:

Radio video emmiter

I've posted something similar to this, but the previous question was how to convert a USB connector to a normal video connector, the question now is how to transmit video through radio.

What I want to build is a radio emmiter and a radio reciver for this purpose, sending ONLY video to transmit from a camera to a TV.

Does someone know how to build this and what I need to do so?

 

Video transmission

Hi everyone,

I'm quite new in all of this, but i want to build a robot able to transmit video, and possibly sound. I've got a common webcam and I want to make it wire less, but I don't know how to do it.

I would apreciate any help from you lot.

Thanks.