Let's Make Robots!

Recently Collected Posts

Price: $10.95 USD

 Collected by one member
The VNH2SP30 is an improved version of the VNH3SP30 motor driver, featuring current sensing, increased drive capability, and a higher maximum PWM frequency of 20 … Read more
Price: $10.95 USD

 Collected by one member
The VNH3SP30 is a great H-bridge motor driver for motors running from 6-16 V and drawing up to about 15 A. The chip is able to withstand 40-V transients, … Read more
Price: $10.95 USD

 Collected by one member
These premium jumper wires are stranded 26 awg wires with female terminations on both ends, for use with 0.1" (2.54 mm) male headers. The assortment of … Read more
Price: $49.95 USD

 Collected by one member
The jrk 21v3 motor controller is a highly configurable brushed DC motor controller that supports four interface modes: USB, logic-level serial, analog voltage, and … Read more

Starting with .NET Micro Framework

My current project is a start here robot with .NET Micro Framework using a FEZ Domino board from GHI Electronics. The FEZ Domino is pin compatible to Arduino, but has more processing power (ARM7 core with 72MHz clock), 3 UART, 2SPI USB host and micro SD-Card support.

After building some Arduino based robots I think it's time for a change. Before I start build the robot itself some testings were needed to find out if the FEZ Domino is a worthy successor for the Arduino and can I use my existing Arduino shields.

This Delta Robot is made from ply wood and aluminium. Cheap servo motors for the positioning. Atmel Attiny2313 for controlling the servos over RS232 with MATLAB. … Read more

Docking, Beacons and Triangulation (Open Discussion)

I just wanted to open a discussion on getting a robot from A to B using triangulation. Really, I might just be looking for a math class here...

This is a project for a competition called "robogame" held by studuents in USTC.It's a five-member team and I'm one of the team .We want to make a robot which … 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
Price: $19.95 USD

 Collected by 2 members
This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 670 mA at 4.5 V, allowing for a holding torque … Read more
Price: $249.95 USD

 Collected by 3 members
This rugged, 6-wheel-drive chassis from Dagu Electronics has independent suspension for each of its spiked 120mm-diameter wheels, allowing exceptional traction over … Read more
Avoid obstacles... look cute... lots of programming to be done.
Using a
update: added code (older version 1.1) as attachment update: Frontplate is mounted. Turned the IR sensors. Lost the abiity to detect cliffs :(    This is my … Read more
The 28-pin project board is fully-assembled development board which has been designed to allow rapid prototyping with the 28-pin PICAXE microcontrollers. Read more
 I cant think of a good name, but im sure theres a good one somewhere, if any of you think of anything let me know.    Laser Cat   The idea of this project is … Read more
Hai guys, This is my new look 5 axis robotic arm. If you have read my previous post, in LMR at ----->http://letsmakerobots.com/node/10708 .This new version use … Read more
Drags weights across the floor
Using a
This is my entry to the Mighty Bot Challenge. It's 6 x 12V motors are driven by two FET servo drivers. These drivers are the same circuitry that drives a RC servo … Read more
Radio controlled with some assist sensors in case connection breaks
Using a
AATV stands for, Autonomous All Terrain Vehicle. Fully custom metal chassis, and "tank" like tracks. Electronics go inside scooter charger box Motors and drive … Read more
Bender is a medium sized robot based on the Crustcrawler Nomad HD platform. It uses the Parallax Motor Kit with Position Controllers, a pair of Parallax HB-25 Motor … Read more
My first robotics project and introduction into the world of electronics in general. I was going to grab the Parallax BOE Bot but while doing my research I ran … Read more
Hello, I'm looking for a device that records my walking motions digitally, and can control servos to imitate my walking forces, balance etc.. You see, I've got … Read more
Reads the latest status from Twitter.com and then verbally speaks it with a couple different mood options.
Using a
UPDATED: I've added the video of Steve's reaction to the robot.  Also, here are more details about the robot, construction and … Read more
this is a Bluetooth printer using lego mindstorms nxt , java program to image processing and Lejos Parts: 1 nxt brain 3 motors 2 touch sensors some of … Read more
As a total moron, I've deleted the previous robot page while trying to clean some attachments   So, let's start again.. Steve the disembodied robotic arm as been a … Read more
The original plan was to build two battle blimps that used sonic to ovoid objects and infra- red to find each other, a direct hit from the nose would count as a hit … Read more
This is the result of a couple of tests with recently arrived microservos + programming + polymorph shaping technics + recently build G'Remote :-) Read more
Update: (this was all done a few months ago) Removed the servo that moved the eyes. Eyes are now fixed. Added an infrared receiver. Still toying with the program, … Read more

Simple electronics videos

Hope these videos might be of help to somebody beginning electronics, schematics(electronic diagrams) will be coming soon for each video.

For the Turnigy TG9e servo used within the video below I used the following code to test it, using pulses with a picaxe 8M.

 

symbol i=b0

pause 100

main:

 

for i=0 to 100

pulsout 2,75

pause 2

Senses position of joint, no moving parts
I needed some positional sensors for an arm on a new robot I'm building but pots were too big and would have been difficult to mount since you want the axis of the … Read more
Price: $14.21 USD

 Collected by 3 members
Looking for tiny proximity sensors? The BittyBot Proxdots are very small, and complete with IR modulated transmitter /receivers! Read more