Category Archives: Components

Comments on an LDROBOT LD-Air Lidar

Posted on December 31, 2021 by Skye Sweeney

I purchased an LD-AIR LIDAR from LDROBOT as part of a Kickstarter campaign. I received it some time ago but did not have any time to play with it then. I just got some time this week and these are … Continue reading →

Posted in AVC, LD-AIR, Personal, Teensy, Uncategorized | Comments Off on Comments on an LDROBOT LD-Air Lidar

XBee radios

Posted on June 12, 2016 by Skye Sweeney

I had gotten a pair of 1 mW XBee radios a while ago. I had wanted to use them to communicate with my robot while it was running. Normally I use an RS-232 cable in the lab, but in the … Continue reading →

Posted in AVC, XBee | Comments Off on XBee radios

IMU heater

Posted on June 11, 2016 by Skye Sweeney

I am using a Pololu 9-DOF module as the IMU for my robot. Its a very small device (1.0*0.8″) using MEMS bases gyro, accelerometer, and magnetometers. The trouble is these sensors have some drawbacks. The first is that MEMS sensors … Continue reading →

Posted in AVC, Pololu 9DOF IMU | Comments Off on IMU heater

LSM303 bug fixed!

Posted on July 5, 2014 by Skye Sweeney

After several very frustrating days, I have found the root cause of my bad readings. It was not in the sensor or in its setup. It was in fact the the TWI/I2C driver code that I took from the ATMEL … Continue reading →

Posted in ARM, AVC, Pololu 9DOF IMU | Comments Off on LSM303 bug fixed!

Woes with a LSM303DLHC

Posted on July 4, 2014 by Skye Sweeney

I have a Pololu 9 DOF IMU (version 2) that uses an LSM303DLLC for the magnetometer and accelerometer. With these two sensors you can create a tilt compensated compass. It was my plan to do exactly that to get heading … Continue reading →

Posted in ARM, AVC, Pololu 9DOF IMU | Comments Off on Woes with a LSM303DLHC

Found the nasty bug.

Posted on April 15, 2014 by Skye Sweeney

I was unable to allow the dog to sleep. Had to find the bug or I was not going to be able to sleep.  After a few more occurances, I had enough data to give me reason to suspect I was … Continue reading →

Posted in AVC, uBlock LEA-6H | 2 Comments

uBlock LEA-6H GPS arrived!

Posted on September 21, 2013 by Skye Sweeney

I placed an order for a uBlock LEA-6H GPS from Hobby King some time ago only to find out it was back ordered. I got my email on a list to let me know when they came in. A few … Continue reading →

Posted in AVC, uBlock LEA-6H | 2 Comments

AS3935 “Striker” software update

Posted on July 27, 2013 by Skye Sweeney

I was notified my Striker code on GitHub had a defect (bug). The contributor posted a patch that I have implemented.  You can find the updated code at www.github.com/skyesweeney/striker

Posted in AS3935, Lightning detector | Comments Off on AS3935 “Striker” software update

SUNDAR update

Posted on July 18, 2013 by Skye Sweeney

Been working on my SUNDAR in what little free time I have these days. Last night my Digikey order came in and I was able to get the dual channel digital potentiometer working. This will be used for a software … Continue reading →

Posted in AVC, Lightning detector, MCP42010, SUNDAR | Comments Off on SUNDAR update

Lightning detector update (AS3935)

Posted on July 8, 2013 by Skye Sweeney

In a previous comment, I was informed that I had a bug in the software I posted on GitHub. Seems that I forgot to implement the 2 millisecond delay before reading the interrupt service register. Not sure what happened as … Continue reading →

Posted in AS3935, Lightning detector | 5 Comments