Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

High amperage motor controller

There has been many developments of Arduino based motor controller boards and shields. They work great with most low power motors but when you need to do more serious motor driven project, then you find that most of those shields aren’t capable to drive bigger motors. Arc Robotics decided to change situation by offering affordable 43Amp Arduino motor shield. They are running kickstarter campaign. They designed controller to be flexible, powerful and easy to use. Arc-Controller can run as standalone motor driver because there is an Atmega328 Arduino compatible microcontroller. Controller can also be attached to another Arduino or other board as slave device and accept commands. It is able to drive single stepper motor up to 43Amps or couple DC motors. Controller has all necessary fail-safes installed like reverse polarity, over temperature and over current protection. Seems to be great choice if you seriously thing diving in to robotics. Continue reading

Demo tests with Arduino motor shield

arduino motor shield

The best way to drive motors with Arduino is to use motor shield. And there are many variations of motor shields you can get. But they use pretty same way of driving motors – H-Bridges. In many cases you will find different h-bridge chips that vary in power range and number of channels. Probably simplest motor shield is ladyada’s mshield. It is based on cheap and common L293D chip. Actually there are two of then so shield is capable of driving 4 DC motors either direction or 2 unipolar or bipolar stepper motors. Additionally there are two servo motor connectors. Scienceprog wrote several short posts to refresh on how easy it is to interface motors and drive them with Arduino by writing few lines of code. First one is simple servo drive. You can write programs using built int Servo library. Another part is driving DC motors. Here you will need to download AFMotor library to make things easy. And final part takes to stepper motor driving. As example there is unipolar stepper motor connected as unipolar. A a special… Continue reading

This time linear clock

Probably you noticed several digitally controlled analog meter clock. These are cool stuff. Anyway analog meters are close to real mechanical clocks in their appearance. What if make clock linear where hour and minute numbers are aligned as in ruler? Euphy has built one that looks very similar as ruler, but if you look closer you’ll find two markers sliding along indicating hours and minutes. He put some work on it especially on mechanical side. The clock is controlled by Arduino and Adafruit motor shield, that takes care of two DC motors moving hours and minutes markers. Thumbs up for great idea! Continue reading

TB-007 Metal Detector – The Mighty Treasure Detector!

You’re having a relaxing vacation with your family at the beach and having a nice sunbathe. Suddenly, a strange robot is approaching you. You’re curious and think, “Hmm…, it’s impossible to see a robot in the beach, unless there’s something important mission or secret is going on here!” So, you quickly bounce up from the beach and follows the robot… Isn’t the above incident sounds like a little bit adventurous for you? Well, guess what! You can make the above fictional story becomes reality, by simply getting yourself into this amazing project, “TB-007 Metal Detector”! The TB-007 is a smart robot that equipped with a metal detector. You can use it to locate those hidden treasures on the beach, forests or deserts. There’s a wireless camera attached at the front top of the TB-007, which is allowing the user to monitor the bots treasure-hunting progress from the comfort of his deck. Furthermore, the camera is mounted to a servo, and has a Laser pointer attached at the front of the robot for detecting purpose! By the way, TB-007 is an… Continue reading