Pololu Blog (Page 70)
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.
Featured link: http://forum.pololu.com/viewtopic.php?f=2&t=7250
Shahmir Javaid tweeted about a tutorial he wrote that describes how he used a Raspberry Pi to control a Maestro servo controller in C. His tutorial documents the steps he took, including setting up the Raspberry Pi for UART, wiring, and programming. The setup is simple, and the code is provided.
A customer sent us a link to this instructable that shows how to make an automated XY table that can be controlled through the internet. It is constructed from T-slotted aluminum extrusions and uses an Arduino and jrk 21v3 motor controllers to drive the axes using a pulley system.
You can interact with this XY table by going to TeleToyland, which has a browser based interface that allows you to draw an image and watch the XY table reproduce your image in a sandbox.
We just added bulk stranded hook-up wire in six gauges (20, 22, 24, 26, 28, and 30 AWG) and six colors to our selection of cables and wire. With all the combinations, that’s 36 new options for wiring up your next project! The convenient mini spools are all filled, so the wire lengths range from 40 to 100 feet (12 to 30 meters), depending on thickness.
We have released two new step-up regulators that can boost input voltages as low as 0.5 V. Like the very similar U1V11x line of step-up regulators, these modules automatically switch to a linear down-regulator mode when the input voltage exceeds the output, making them great for powering electronics projects from 1 to 3 NiMH, NiCd, or alkaline cells or from a single lithium-ion cell. These modules do not offer the U1V11x shutdown functionality, which allows them to be much smaller (just 0.35″×0.45″) and a little less expensive ($4.49 each).
These regulators are available with a 3.3 V or 5 V fixed output voltage. For other options, you can take a look at our full selection of step-up voltage regulators, step-down voltage regulators, and step-up/step-down regulators.
Swap_File posted a write-up of this Tron-inspired costume on the Adafruit forums. A pair of Wixels — one in the disc and another in the jacket — helps to enable wireless control of the suit’s lights and displays.
The costume was featured in a Wearable Wednesday blog post on the Adafruit blog.
Featured link: http://www.forums.adafruit.com/viewtopic.php?f=47&t=41560
Forum user Christian, writing from Germany, posted this video of an automated system he built that pushes buttons on a car radio (Becker Mexico CD 876) as a brute-force method to determine its radio code. In his system, he uses our Mini Maestro 12-Channel USB Servo Controller and 10 servos to extend rods of wood to press the numbered buttons on the radio console. You can read more about his system in this forum post.
The setup had already run for 3 days straight, but Christian expects it to take another 30 days to finish entering all 10,000 codes. We look forward to hearing back from Christian once it finishes.
Featured link: http://forum.pololu.com/viewtopic.php?f=2&t=7280
Pololu Forum user VolAnd, writing from St. Petersburg, Russia, posted about an app that turns a Wixel into a USB SD card reader. The Wixel identifies itself as a mass storage device, and basic read/write operations are working. His goal is to create files with the Wixel that he can then read from a PC. You can read more or get the app from his forum post.
This Wixel app and many others are available in our listing of community-contributed apps on the forum.
Featured link: http://forum.pololu.com/viewtopic.php?f=2&t=7143
We are now selling the motor and encoder portion of three of our metal gearmotors, without a gearbox. The pinion gear on the output shaft works with the gearboxes on the corresponding products, so these can be used as replacement motors or encoders.