Let's Make Robots!

Recently Collected Posts

Indoor navigation system?

So I'm working on a delivery bot for my office, the hardest part of which is the navagation system becuase I want it to be autonomous. 

I have Wifi Access points I could use, maybe or gps repeaters. 

Have any of you tackled this challenge or have some advice?

 

Thanks 

New beginner with Robotics.

Hello,

I'm an absolute beginner with robotics, and would like to make a serious start, but I'm not sure where to start, should I read books first? I want to buy the tools and parts I need, but I don't want to spend a lot of money, and then I can't use it.. 

Maybe someone can help me! :)

 

Thanks in advance!

Making a PING sensor control a DC motor

Hi, guys. I'm kinda new to this robot-scene. I've been doing it for about 3 days i bought a arduino uno r3 and a few other odds and ends to make a simple robot. ive got 2 DC motors(3v), A PING sensor, and everything else to make a robot(don't feel like going into detail lol). I know how to run the motor and the sensor by themselves but i need some help making the sensor and the motor cooperate. Any ideas

 

P.S. i have programming knowledge so i dont need it (dumbed) down lol

Controlling a 16 x 1 Character LCD with a Propeller

I have some 16x1 LCDs I was hoping to control with a Propeller. I know there are several other LMRians with these LCDs who also have Propellers. I thought I'd share what I've learned in my attempt to control the LCD with the Propeller.

I found the datasheet here. As someone in the Shout Box noticed it treats the character starting in column 9 differently than the previous eight characters.

Info About Propeller Proto Board USB

Parallax used to sell a USB version of their Propeller Proto Board.

I had a few extra of the USB Propeller Proto Boards which I gave to a couple of LMRians. I wanted to explain some of the quirks these boards have. I thought other LMRian might also find the information useful.

Adjusts colors for camouflage in accordance with vision
Using a
Today my daughter and me continued to study our animal encyclopedia. We found the chameleon. I tried to explain her that some species adjust their colors for … Read more

Service Droid V3.0

I was talking to a friend last night and he pointed out the Service Droid would be better on the Rover 5 Chassis. This is what I have so far.

The Service Droid is a cheap robot body with a reasonable amount of functionality. The idea is that you can fit it with whatever sensors and processor you want.

LIDAR Lite Development

Sparkfun had a link to an interesting article about supporting the development of LIDAR-Lite:  http://www.dragoninnovation.com/projects/32-lidar-lite-by-pulsedlight

Rather pricey but if it can provide better scanning capability over the ultrasonic sensors it might be fun to use. Any one heard about this?

 3/14/14 Pi Day Update

This tutorial is an extension of my original tutorial on using motor encoders here: http://letsmakerobots.com/node/38636. This tutorial looks at some code I have … Read more

San Francisco Circuits - Custom PCB Manufacturing & Assembly

Hello Robot-Humans,

It's a pleasure to have joined your very fun community.

I hope we can help with some of you that may have needs for custom circuit boards, either for your personal or professional needs.

We're located in San Mateo, California and have been providing PCB manufacturing and PCB assembly services to our customers since 2005.

I first saw Frits’ Yellow Drum Machine featured in Make magazine a while back, and felt compelled to make one myself, starting with the how-to. So, here it is! … Read more

Propeller Boards to use in Robots

As many of you are aware, I'm a big fan of the Propeller. I frequently get asked various Propeller related questions in the Shout Box which I'm all too happy to answer. However, I thought it might be a good idea if I made a more permanent record of my Propeller board related suggestions.

Navigate Around via ultrasonic Sensors , Has built in inverse kinematics for the Arm
Using a
Inspired from the DAGU wild thumper . I went down the road to make one myself .. a more powerful one .Respect to the creator OddBot. I am using 6 Pololu - 50:1 … Read more

HMC6352 Compass Module in Continuous Read Mode

I have a need (desire?) to use compass heading as part of my PID loop to keep my rover heading true.  Using my well established trial and error coding technique, I was unable to get a sufficient sample rate from the HMC6352 Compass module using code I pilfered.. er... borrowed (I plan to give it back!) from the Interwebs.

I have been working on my most recent robot project build. His name is BIGFOOT. The mechanical aspects are pretty much done now I am stepping into the electrical … Read more

How small can I make my robot tree? ...stepper motor vs regular servo

Hi All,

I came up with an idea to make a 40 servo robot tree (or seaweed) that can flail its trunk and branches, lol! The trunk will consist of 8 servos (red), and there will be various other servos scatterd around to provide branch and twig movement (blue)

 

This site and others have been very helpful just by looking at guides etc.  It seems as if all i need to make this robot is servos, a frame, some type of board with the motion program, and power.

I bought a parallax BOE-bot(the arduino robot shield) but had trouble with the 5v outputs when it went through the board. I modified it with some plates I bought … Read more
Hello everybody, Here is my last robot. The first one I post on LMR. I've been on LMR for quite a long time but never really posted anything. So it's time to … Read more
BoB arounds... increases the ranks of the BoB Army
Tentatively Called Grey BoB The Bringer Of Caos, Destruction, Bleakness And Sesame Seed Ice Cream or just TCGBTBOCDBASSIC is a BoB. BoB's need no introduction, this … Read more
Introduction SPURT is an acronym used by the University of Rostock in Germany. It stands for 'School Projects Using Robot Technology". I borrowed the concept for my … Read more
Alternative way to get diagnostic data while minimizing timing impact generated by the Serial.print function.
While developing routines for my rover, especially diagnostic routines to identify sensor errors or conflicts, I have been using the Serial.print() function.   … Read more
STILL WIP! Goal: Drive a Hexbug Spider using either an Attiny 85 or Attiny 2313 as a brain - also try to make it look cool. Read more
Bluetooth Low Energy Breakout
Using a
Here are some random notes on working with the HM-10.   Working RX/TX LEDsHow upgrade the HM-10Pseudo Star-Networking HM-10s   Working RX/TX LEDs Read more

Li-ion 7.4v and servos

Hello,
At this time, I make a humanoid robot. This one: http://letsmakerobots.com/node/27414 and now it's time to use battery power.

Navigate around via IR, drive upside down
Using a
I had an idea to build a tracked rover, capable of driving even upside down. I came up with a design for each side to have a drive gear and two idlers in a … Read more
UPDATE: Now with UART(ish)! (3/2/2014)Robot Metallurgy 101: PWMRobot Metallurgy 101: UARTI thought I would journal my work as I begin to venture from the … Read more
Drives around controlled by a remote.
I have a rover 5 chassis (4 motors, 4 encoders). My goal to use this chasis to create a robot that drives around and is controlled by a remote.  I am new to … Read more
Knocks Objects Around the House
Using a
Hello All,   The world is full of obstacles, and Fightron 1.0 here, is ready to knock out some, in his own robotic journey.   After recently building an obstacle … Read more
Find its way around my room and clean it
Using a
Hello everybody! I have been working on a robot vacuumcleaner for a while now and i would like to share it with you. This project is my experience with robots but … Read more