Category Archives: Components

XBee radios

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 | Leave a comment

IMU heater

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 | Leave a comment

LSM303 bug fixed!

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 | Leave a comment

Woes with a LSM303DLHC

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 | Leave a comment

Found the nasty bug.

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!

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

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 | Leave a comment

SUNDAR update

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 | Leave a comment

Lightning detector update (AS3935)

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

Not feeling the love

It is 12:30 at night and I was woken up by a thunderstorm raging outside. Heard the rain, saw the flashes, and heard the thunder. Went downstairs to look at the output of the AS3935 based lighting detector.  Dang thing … Continue reading

Posted in Arduino, AS3935, Components, Lightning detector, Processors, Projects | 4 Comments