Let's Make Robots!


Navigates via 3 IR Switches, Plays "hide and go seek", makes semi-intelligent course corrections, gives audio and visual feedback via buzzer and lcd display, remote controlable
Using a
I built this robot as an all-around robot to jump start my way into Arduino. I self taught myself everything about this robot from code to hardware and have taken … Read more
IR control of Deskpets Tankbot
Using a
Last year I bought a Deskpets Tankbot on sale at Radio Shack for hacking. It came with an ir transmitter dongle for a smart phone. I tried it with an Android phone … Read more
       Hello LMR, this is Penny the 3 servo hexapod. Penny is not just a very cheap way to build a hexapod but a very cheap way to build a robot, period. I … Read more

IR Laser Sensing

Would one of these pickup a 38khz signal pulsed from a 650 nm laser?


Sweeps the floor using ultrasound, IR, and an encoder for obstacle detection/avoidance
Using a
this is a follow-on to an earlier proof-of-concept robot found here: http://letsmakerobots.com/node/36052 The brush part of this sweeper is from a Shark hand held … Read more

arduino infrared help

Anyone out there successfully used the IR libraries with arduino? Calculon is trying to use it with some bots, but not in the way the libraries are written. Calculon is trying to get one duino to talk to another using a byte, the way that a Picaxe can.

All the code and tutorials he has googled seem to be for emulating or talking to a remote control and figuring out the protocol of that remote.


So i did everything as on this guide


But it's not working, I think the code is wrong? Can you help me ^^

I use picaxe 28x1

Thank you <3

Juice Box Robot Plan, Needs review

***UPDATE MARCH 11: After reading the comments here I have made a couple of changes to my plans. I have replaced the PICAXE 18 with the PICAXE 28 and appropriate board. I have switched to 3 AAA cells as a power source and I have changed to servos to power the "arms". When I wrote the original post used the word "arms" as a placeholder, but while I always intended to have actuation it was never actually going to be a set of arms.

Connecting TSOP38238 IR Receiver to AXE020 + 28x1

Hello LMRians,

I am using a Picaxe 28x1, and AXE020 project board and a TSOP38238 IR Receiver

Navigate around via IR proximity sensors
Using a
This is the second version of B.bro. I changed from the boost regulator to a linear regulator for the power supply, and changed the dual H-bridge to a chip that's … Read more
Navigates via Infrared, and uses basic obstacle avoidance.
Using a
The video shows the robot in operation, notice that if it hits an obstacle that's just out of view and falls over onto it's back it actually turns itself off! This … Read more

IR sensors

So, I bought from an online shop an IR LED and an IR receiver, like this:

and I want to connect it to a Picaxe chip, but I don't know how. I found plenty of tutorials about this one

like this:

but no information about mine.

Could anyone help, please?

Line robot sensor

Hey guys, i want to build a line following robot and I was scouring ebay for some sensors


I found these but I wasn't sure if they would work, as I haven't done this before. They're pretty cheap.

Swarm Robots - Brainstorming (Football robots)

This will be a note for my just started team project "Swarm Robots".

This project will take place in our hackerspace Shanghai "Xinchejian". it will be a team project where every member can join and contribute his/her skills, ideas etc.

In this blog I will ask questions and write down solutions, ideas, goals and everything else what is related to that project.

So far that's the initial idea:

Navigates via IR. Hopefully it will do that and much much more in the near future!
Using a
20:45 GMT, 2nd May 2012: Hello everyone! Today I got my first package, containing everything I need for my PICAXE (including the actual PICAXE board) and a servo. I … Read more

IR sensor-Again

I have again problems with my IR-sensors. 

I have two of these http://www.dfrobot.com/index.php?route=product/product&path=36_55&product_id=114 connected to input pin 6 and 7 on my 28x1 picaxe projectboard. And even when there's no program on the microcontroller the sensors think that there's something infront of them, but there isn't.

infrared sensors

I've got two sets of phototransistors and infrared emitters put together to make two IR distance sensors. They are both connected in the same way, both powered by my Arduino Uno, both with the same resistor, etc. But when I check the values I'm getting from them, one of them ranges from about 980 - 1010, with the higher value closest to the sensor. The other, however, goes from about 350 - 570, with the higher value the furthest from the sensor.

This is my first robot project. I've had an interest in electronics for as long as I can remember and began playing with PICAXE about 5 years ago, but never really … Read more
Remote Control robot controlled with InfraRed Remote.
Using a
*Note: Fritzing Schematic, and Arduino Sketch attached as Zip.*  This is a 2 motor robot controlled with an Infrared remote control. Arduino needs the IR Library … Read more
Drives autonomous, avoids obstacles by using IR sensors, an measuring the wheels rpm. Could also be remote controlled through XBee.
Using a
This is my first robot project. Primary goal of the project was to build a small robot which is able to drive autonomous as well as remote controlled by a human. … Read more

IR LEDs and transistors voltage

Anyone knows the voltage and currents for these devices? There seems to be ABSOLUTELY no information. I bought them from yourduino.com because I told myself I could figure it out but I now highly doubt this. *facepalm*



Making a fire sensor (question)

With a bit of circuitry can this IR phototransistor replace the following sensor? 

IR phototransistor:http://arduino-direct.com/sunshop/index.php?l=product_detail&p=209


I plan to interface it with an Arduino

Move and Obstacle avoidance
Using a
So, I have been kind of dabbling with this thing for maybe 6 months (idea to conception) and well I don’t know what I’m doing wrong but it just doesn’t work … Read more

IR RC code problems...



#include <IRremote.h>

#define m1F 6

#define m1R 7

#define m2F 5

#define m2R 8


long F = 1979994096;

long L = 1979994056;

long R = 1979994048;

long B = 1979994076;

long S = 1979994080;

int RECV_PIN = 4;


IRrecv irrecv(RECV_PIN);


decode_results results;


void setup()


  pinMode(13, OUTPUT);

  pinMode(m1F, OUTPUT);

  pinMode(m1R, OUTPUT);

  pinMode(m2F, OUTPUT);