Let's Make Robots!

Infra Red

Multiple similar distance sensor use for Obstacle Avoidance and Approach

Related to my post this weekend about Robot Size and Methods of Obstacle Avoidance but not limited to larger robots, does anyone's experience with use of multiple distance sensors (either US or IR) support concurrent use or alternatively suggest that the complications caused by their installation, interference with eachother and programming are not worth their addition?

As seen in the picture there is an Arduino Uno with a protoshield on top with an IR receiver and IR LED. I undertook this project to learn how we used infra red … Read more

Building a line following robot Need help with programming

 

#define INA_2   10   //This is the left forward control of the robot, I defined each pwm pin that is connected to the arduino

#define INB_2   11   //This is the left backward control of the motor, e.g set this high and INB_1 high and others low you will do a reverse

#define INA_1  5    //This is the right forward control of the motor

#define INB_1  6   //This is the right backward control of the motor

 

 

 

 

Update: Added new video. What if your robot is stucked and can't free itself?    Take back the control and steer your robot out of trouble. What if some danger … Read more

i dont know what this LED is ... any ideas ?

ok i have a few of these LEDs and i dont know what they are for i think they might be IR LED, i have tried putting a power source through them from 3-9V and it does nothing. any ideas at all i have about 500 of these my friend gave me and not a clue what they do... 

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.

 

 

 

Looking at an IR-transmitter, but have no clue weather it is on or off? Turn on your camera, video or still, as long as it is digital. This blue spot does not show … Read more