RC – Page 2 – Guilherme Martins

Ratazana drifting

I´ve been quite busy with the motor of this robot and I already started to have some of the results I wanted, but I still couldn´t find a stable setup, after a couple of drifts it starts to lose power as you can see by the end of the movie.

Besides this, I like the way it moves, and I can have some control when it´s drifting, it is now my anti-stress toy!!! :)

I have also made some major updates to the arduino circuit board. As you can see in the photo below, I finally have figured out how to upload code to a custom arduino board, (this post describes everything related to this), added capacitors to the L293D, added pins for the ladyada xbee adapter and also added pins for the sonar sensor.
To upload code, I have to add a switch button, to change the rx / tx wires from the xbee to the ftdi cable :)

Continue reading Ratazana drifting

Ratazana update

This post is a full description of all the building process, the main idea started with the ratbot, and then I found out that I could follow the same concept with a different approach :)

Click the button to read more:

Continue reading Ratazana update

Ratazana

This is a ratbot derivated, faster, cooler, and with more fun! :)

I like pretty much the way it is going until now, but there are still things I want to do. Beside that, I can´t make it move straight in a line, it seems that it is not well balanced.
When finished, I will post details about the building process.

G’Remote – Arduino based remote controller

27-August-2009 UPDATE:
My friend Gerhard from Germany asked me to build a walkthrough regarding the G-Remote, with part list, schematics and code. And here it is. Enjoy :D

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

I figured out that if I purchased 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.

Each joystick have one button inside, that is cool :-)

Now I have more control over my bots, specially the ones with two motors.. will post videos later.

no comments on this one :-)

Tankah – remote controlled tank

Since I’ve 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.

Continue reading Tankah – remote controlled tank

bigbro

After completing the new motor driver board, now I feel ready to continue with the development of this bot..

For now it´s just remote controlled, but it will have some intelligence soon.
I will try to add microphones and use them as sound sensors. If I add for example 4 microphones, one on each side of the bot I could detect where does the sound come from and make it move in that direction, then add a couple of distance sensors to avoid obstacles..

My living room seems to be too small to drive this bot..

see it on MAKE :]

Farrusco RC

I wanted to keep working with the XBee modules, and I thought it would be cool to control Farrusco.

So, first I used 2 potenciometers and assigned one to each motor.. and then I used a nunchuck controller.
Both require a learning curve and it’s only after a while that you start to feel the touch :]

This is the code I´m using to control the robot with the Nunchuck

Serial Comunication between Arduinos – With Wire & Wireless

— please check an updated code sample on the following post —
http://lab.guilhermemartins.net/2013/08/01/new-basic-arduino-serial-communication/

I´ve created this example to make two Arduinos talk in a simple and clear fashion.
You will see below an example with wires, and another one without wires.

Continue reading Serial Comunication between Arduinos – With Wire & Wireless