Let's Make Robots!

Sharp IR

Sheldon is currently in its third frame on his second microcontroller.  He started in an altoid can using picaxe and worked his way up to his current body using … Read more
Navigate around via SHARP IR
Using a
This is my second robot. It's inspired by Chopstick Junior, http://letsmakerobots.com/node/29708. Few months ago I found where to buy cheap 8g servos and decided to … Read more
Uses GPS, Compass, Gyro and Object Avoidence to Navigate
Using a
Hi, My names Alex McClung I'm 15 from Newcastle, Australia and this is My Robot. Read more

Axe - the sumobot

Hello hello!

As you can guess, I am making a new robot, and it is a small sumo!
- Picaxe 14M
- 2 modified micro servos
- 1 LDR to see the line of the ring
- Sharp IR sensor
- Bottle cap wheels until I make up a better solution (Yes, lol :D)

And when I will receive parts, or get something done, I am going to update this until it is time to post a robot!
Tomorrow (I think) I'm going to post schematics and maybe printed layout ready to make it pcb!

navigate in various ways, teach me about robotics
Using a
Hi! MAEP 2.0 is the second version of MAEP (please check it out if you haven't already). I won't go into all the details about things that are the same as the … Read more
This is the improved version of the Edwardo V2.0 posted by Grimjack1973. We are working in colaboration and had to change the chasis design due to a few flaws. We … Read more

inverted sharp ir

i have been using a sharp ir sensor on my first project but it seems to me that when a distance is smaller it is bigger?

i made a short program to test it:


readadc 0, b0

if b0 < 20 then

high 5

low 4

high 7

low 6

pause 500 

low 4

low 5

low 6

low 7


goto main

when i put my hand infront of it it stopped and when i removed my hande it move. shouldn't it be the other way?

i got round this by putting > istead of < and < instead of >

Hi, This is second version of my robot Primo. It is Lighter, Faster, Smaller and nicer (I think :D ). It is controlled by Picaxe-08M. I used one IR sensor connected … Read more

ir rangefinder

i am trying to do something a bit like the start here robot well a lot like but i dont know how to hook up the dherp ir sensor i know how to connect it to the board but how do i connect wires to the sharp ir it is way to small to solder as it just connects the pins and female headers wont fit in the gaps what do i do  thanks

Lots of strange Sharp IR Noise…?

Hey everyone. So, I just finished my first robot in a few years, my first being 2 1/2 years ago. This one is a lot more complicated in terms of hardware since I made my own boards and all, and have 5 ICs in one circuit. I'm done with programming and everything runs well but there's one ongoing problem with my Sharp IR GP2D120 sensor.

Drives around using feedback from the Sharp IR sensor to avoid objects
Using a
Well...this is my first attempt at building a robot. Right now it does basic object avoidance and drives around...woohoo! I'm going to continue to tweak the code … Read more
walk around and avoid obsticles with 8 servos and a sharp IR (impress friends!)
Using a
this is the very begining of my quadruped it uses a picaxe 28x1 and will sponser up to two servos per leg (2dof) so far the black box is just the "control station" … Read more
run around, avoid obstacles after bashing into them
Using a
This is Mr Shark Fin Soup. Hes a Frits Basic Robot but with a deadly twist. I used the Morphibians Land Shark RC car as the base for this bot. These are great … Read more
Navigate around, beep, talk, and look cute
Using a
New, Update2: Added a voice and sound module to make Henry talk. This is my second robot so I wanted to build one with a track drive.  I got some nice tracks from … Read more
Navigates by IR - avoids obstacles.
Using a
Presented here is my rendition of the Start Here robot using a PIC16F690 and programmed in Assembly with the MPASM Assembler.  In addition to the micro, parts … Read more

Sharp IR Sensor with PICAXE-40x1 Oddity

I am using both a PICAXE-40x1 and a Sharp IR proximity sensor.

My issue is: when I download my code to the PICAXE chip the program editor throws an error saying "cable unplugged, floating pin, etc." When I pull the ground wire on the sensor, the code will download. Clearly an issue with the sensor or how I have it wired. Per the sensor schematic, I have power, ground and signla all wired in.

Has anyone run into anything similar?


hacking the digital Sharp IR sensor

Check out this link, Ladyada bought a digital IR sensor by accident, and found a way to turn it into a analog one. Clever!

And an interesting aspect is that the D version is often cheaper than the A versions.



Interface Arduino w/ Sharp IR sensor

I have a Sharp GP2Y0A700K0F IR sensor that I want to connect to an Arduino decimilia. The data sheet says to use (3) wires for connection (pin 1 to ground, pin 2 to voltage, and pin 4 to analog pin) but the sensor has a 5-pin housing. Should I find a 5-pin female to connect with? or is there a better way to make the connection. Please help! I have been searching for how do this interface for a while with no success....my first robot. Thank you.