Pololu Blog (Page 10)

Welcome to the Pololu Blog, where we provide updates about what we and our customers are doing and thinking about. This blog used to be Pololu president Jan Malášek’s Engage Your Brain blog; you can view just those posts here.

Robotic arm using Mini Maestro at the Nashville Mini Maker Faire

Posted by Grant on 4 December 2014

Inspired by this robotic arm tutorial, Andrew Hoover recently posted on our forum about a robotic arm he made for the Nashville Mini Maker Faire. The arm is constructed from laser-cut acrylic and actuated by hobby RC servos. The servos are controlled by a 12-Channel Mini Maestro, which reads the signals from joysticks and converts them to target positions using a Maestro script. You can see the arm in action in this video:

For more information on the project, you can check out Andy’s blog post for his robotic arm project, which includes a parts list, instructions, and code.

Automated ball path contraption for the holiday season

Posted by Brandon on 3 December 2014

Bruno Schneider posted the above video on our forum that showcases an automated ball path machine he made for last year’s advent season with his brother and father. The contraption uses a 24-channel Mini Maestro and is displayed in the window of his mother’s sewing shop. The machine is fun and impressive by itself, but the video (with accompanying sound effects) makes the project even more entertaining.

If you make or have made any festive projects using the Maestro or any of our other products, we would love to see them! You can post them in the comments below or in the Share Your Projects section of our forum, which is also a great place to browse for inspiration or ideas for a new project.

Last Call: Black Friday/Cyber Monday Sale

Posted by Ryan on 1 December 2014

Last Call: Black Friday/Cyber Monday Sale

Less than 12 hours to go for our Black Friday/Cyber Monday sale! Manufacturing and shipping are working hard to make your robot parts and ship them out. If you already placed an order, thank you! Customers who ordered earlier in the sale have already started to receive their packages Continued…

New products: D24V10Fx 1 A step-down voltage regulators

Posted by Kevin on 28 November 2014
Tags: new products
New products:  D24V10Fx 1 A step-down voltage regulators

We’ve just released a new family of D24V10Fx step-down voltage regulators. These buck regulators are very similar to the D24V5Fx regulator family we introduced in March, but they use the Intersil ISL85410 regulator IC – a higher-current relative of the ISL85415 on the D24V5x – that allows them to output twice as much current (up to 1 A). The D24V10Fx family is available in five different versions with fixed output voltages of 3.3V, 5V, 6V, 9V, and 12V.

Like their 500 mA counterparts, the D24V10Fx regulators operate with input voltages as high as 36 V at typical efficiencies of 80% to 95%. They feature the same power-save mode to improve efficiency at light loads, along with low dropout voltages and integrated protection against over-temperature and over-current conditions. All this makes them a good choice for powering applications where input voltage and operating current might vary over a wide range.

The slightly larger size of these new regulator boards (0.5″ × 0.7″ × 0.14″; 18 mm × 13 mm × 3.5 mm) makes room for a fifth pin that provides a “power good” indication (PG), but they are still not much bigger than standard through-hole linear regulators. The picture below shows a D24V10Fx, a D24V5Fx, and a 7805 voltage regulator in a TO-220 package:

For other regulator options, you can take a look at our full selection of step-up voltage regulators, step-down voltage regulators, and step-up/step-down voltage regulators.

Khan Academy interactive continuous rotation servo demo

Posted by Jon on 28 November 2014
Khan Academy interactive continuous rotation servo demo

Khan Academy user mbbackus created a demo that allows users to visualize the effects of sending different pulse widths to the SM-S4303R and Parallax continuous rotation servos. (You can use the up and down arrow keys to change the pulse width, and more instructions can be found as comments in the code.)

For those who are interested, you can learn more about standard RC servo pulses in this series of blog posts about hobby servos.

You can see the demo on its Khan Academy page.

Black Friday Sale at Adafruit

Posted by Paul on 28 November 2014

Our friends at Adafruit are holding a Black Friday sale today, offering 15% off everything in stock plus extra free items for orders above certain amounts.

You can find the details on the Adafruit blog.

Black Friday/Cyber Monday Sale: check out all the deals!

Posted by Ben on 25 November 2014

You can now find all of our sale details, including a full list of the sale items, on our Black Friday/Cyber Monday sale page. The first doorbuster deals go live in less than 12 hours!

Coming soon: Pololu Black Friday/Cyber Monday Sale

Posted by Ben on 21 November 2014

Our annual Black Friday/Cyber Monday sale is less than a week away! We have put up some of the special offers on the Black Friday/Cyber Monday sale page. Stay tuned for more details!

New products: Pololu T-shirts

Posted by Jon on 21 November 2014
Tags: new products

We have a new batch of T-shirts available, just in time for winter! These shirts are very similar to the ones we released in 2012, featuring a printed circuit board (PCB) design in the shape of the Pololu logo on the front and the Pololu slogan “Engage Your Brain” on the back.

The shirts are available in a variety of youth and adult sizes, and this time we have two new colors available in addition to our standard royal blue: cardinal red and charcoal gray.

You can find our full selection in our T-shirts category.

New products: Stackable headers for the Raspberry Pi

Posted by Ben on 19 November 2014
New products: Stackable headers for the Raspberry Pi

Stackable 0.100″ Female Header: 2×20-pin, Straight.

We now have special extended, stackable female headers for the Raspberry Pi:

The 2×20 versions work with the Raspberry Pi Model B+ (and the just-released A+), while the 2×13 versions match the I/O header on the older Raspberry Pi Models A and B.

See our Raspberry Pi category for our full selection of Raspberry Pi accessories.

New Products

Pololu Ball Caster with 1″ Plastic Ball and Ball Bearings
VL6180X Time-of-Flight Distance Sensor Carrier with Voltage Regulator
Mini MOSFET Slide Switch with Reverse Voltage Protection, SV
Pololu Wheel for FEETECH FS90R Micro Servo, 60×8mm Pair - Black
Mini Pushbutton Power Switch with Reverse Voltage Protection, SV
9mm Electromagnetic Buzzer: 40Ω, 4-6V, Top Opening
Mini MOSFET Slide Switch with Reverse Voltage Protection, LV
Zumo 32U4 Robot (Assembled with 50:1 HP Motors)
Zumo 32U4 Robot (Assembled with 75:1 HP Motors)
Zumo 32U4 Robot (Assembled with 100:1 HP Motors)
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