Monthly Archives: March 2015

The eBay Treasure Hunt

via Nuts and Volts

Online sourcing from China is a real boon to electronics experimenters on a budget. Akin to flying on standby, if you're willing to wait anywhere from a week to a month for delivery, components and circuit modules can be had for less than the cost of shipping alone of similar items from domestic sources.

The eBay Treasure Hunt

via Nuts and Volts

Online sourcing from China is a real boon to electronics experimenters on a budget. Akin to flying on standby, if you're willing to wait anywhere from a week to a month for delivery, components and circuit modules can be had for less than the cost of shipping alone of similar items from domestic sources.

Arduino Day 2015 Sale

via Pololu Blog

Tomorrow is Arduino Day, and we are joining in on the fun by offering big discounts on many of our Arduino-related products, including our A-Star programmable controllers and Arduino shields. The sale has already started, and it will run through the end of Sunday (I know, Arduino Day is a one-day event, but this makes sure the sale lasts all Arduino Day in every time zone). You can find all of the sale items on our Arduino Day 2015 sale page.

Free magazines: March 2015 Circuit Cellar and March/April 2015 Elektor

via Pololu Blog

Get FREE copies of Circuit Cellar magazine’s March issue and Elektor magazine’s March/April issue with your order, while supplies last. To get your free issues, enter the coupon codes CIRCUIT0315 and ELEKTOR0315 into your shopping cart. The Circuit Cellar magazine will add 6 ounces and the Elektor magazine will add 9 ounces to the package weight when calculating your shipping options.

For back issues and more information, see our free Circuit Cellar magazine offers and free Elektor magazine offers.

New products: Stepper motors with lead screws, traveling nut, and mounting bracket for NEMA 23 stepper motors

via Pololu Blog

NEMA 17-size stepper motors with 18, 28, and 38cm lead screws.

Since we started carrying the stepper motor with 28cm lead screw, we have routinely received requests for shorter and longer versions of it, so we are happy to announce that we are now carrying two additional versions: one with an 18 cm lead screw and one with a 38 cm lead screw. All three of the stepper motors with lead screw use the same NEMA 17-size stepper motor, which is also available without a lead screw.

All of the stepper motors with lead screw come with a traveling nut, also known as a carriage nut. This copper alloy nut features a mounting flange with four holes threaded for M3 screws to make it easy to integrate into your project. From time to time, we also get requests to make the traveling nut available for purchase separately, so we did! If you are interested in picking up some spare traveling nuts, more information can be found on the traveling nut’s product page.

We also have a new NEMA 23 stepper motor bracket as pictured above. Around eight months ago, we started carrying our stamped aluminum mounting bracket for NEMA-17 size stepper motors, and since then, we added a stamped aluminum NEMA 14 stepper motor bracket to our selection. We looked into getting similar aluminum bracket for NEMA 23-size stepper motors but ultimately decided to go with a more rigid 3mm-thick steel mounting bracket for NEMA 23 stepper motors. On this bracket, two steel supports are welded in the corner along the bend of the bracket to provide extra reinforcement.

Smartphone-controlled Zumo Robot for Arduino Tank

via Pololu Blog

Smartphone-controlled Zumo Robot for Arduino Tank

This Instructable by Annikken shows how to turn a Zumo Robot for Arduino into a smartphone-controlled tank. It uses the Annikken Andee for Android (they have one for iOS too), which is an Arduino shield that is connected between the Arduino and the Zumo.

Here is a video with the tank driving around:

More details are available on the Instructable page.