Pololu Blog (Page 85)

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.

Popular tags: community projects new products raspberry pi arduino more…

Three and a half months to plug in our machines legally

Posted by Jan on 29 March 2012
Three and a half months to plug in our machines legally

This post is an account of the difficulties I have had for the past four months in getting permits to run our equipment at our new location, which we moved to in December of 2011. I am writing this partly as notes for myself and others at Pololu, but the main point of sharing this is to warn and commiserate with other businesses having to deal with such problems and to give other readers some awareness of the real-world ramifications of the regulations much of the public seems all too eager to embrace. I still have a hard time believing we really had to go through all of the hassle and expense, so I am also hoping that some readers might point me to some resources so that I can avoid this in the future. I realize there is speculation and hearsay in my report, but I want to emphasize that my impressions are based on many vendors, contractors, public employees, and manufacturers: in all, I spoke to dozens of people about our experience. I will try to be as specific as practical without unnecessarily exposing individuals who were trying to be helpful to undue scrutiny. Continued…

The GardenBot - using computer vision to help out in the garden

Posted by Ryan on 14 March 2012

“The GardenBot” uses a Maestro Servo Controller to help it track an orange bucket. The plan is for it to help its creator’s wife do her gardening by following her around with a large wagon full of supplies. See this forum post for more information.

Trackduino P1213 Arduino shield

Posted by Paul on 2 March 2012

This custom Arduino by Craig Hollabaugh shield mounts a Pololu dual MC33926 motor driver carrier for easy control with an Arduino. For details, see his project video and build log: page 1, page 2, page 3.

DIY fully-automatic book scanner

Posted by Ben on 13 February 2012

This do-it-yourself fully-automatic book scanner uses a Maestro servo controller to control the page-turning, and picture-taking servos. It was able to scan 468-page book in about 12 minutes with zero page-turning errors. For more information, see the DIY Book Scanner forum thread.

Featured link: http://www.youtube.com/watch?v=

Popular Mechanics Build Your First Robot

Posted by Ryan on 3 February 2012

Gordon McComb has published a project in Popular Mechanics called Build Your First Robot. The parts that Pololu offers are in this wish list, and more details are available on Gordon’s site.

Display for compass and accelerometer readings

Posted by Ryan on 3 February 2012

This forum post shows how to use a Baby Orangutan to read the accelerometer and compass values from an LSM303DLH and display them nicely on a 1.8" TFT LCD display. January 2012.

Controlling the Pololu 3pi Robot using a Joystick

Posted by Ben on 3 February 2012

This project by Pololu forum user Wilfredo shows how to control a 3pi robot by directly connecting two joystick outputs to two of its analog inputs. Here is a schematic of his setup:

Schematic for controlling a Pololu 3pi robot using a joystick.

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CT432-HSWF70DR TMR Current Sensor Large Carrier 0A to 70A, 5V
ACS71240KEXBLT-050U5 Current Sensor Carrier 0A to 50A, 5V
ACS37220LEZATR-150B5 Current Sensor Compact Carrier -150A to +150A, 5V
A5984 Stepper Motor Driver Carrier, Fixed 750mA@5V / 500mA@3.3V (Soldered Header Pins)
Dobot Vision Kit
ACS37220LEZATR-200B5 Current Sensor Compact Carrier -200A to +200A, 5V
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CT433-HSWF70MR TMR Current Sensor Compact Carrier -70A to +70A, 3.3V
A5984 Stepper Motor Driver Carrier, Adjustable Current, Blue Edition
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