I have been using the PIC microcontroller to read the codes sent out from handheld remotes. I was even inspired to construct a maching that woulkd print out the various codes when I pressed one of the buttons on the remote. Here it is!
HANDHELD INFRARED REMOTES AND THE BINARY CODES
May 20th, 2005CREATING BELL SOUNDS
April 30th, 2005Just yesterday I determined to find a way of producingelectronic bell sounds.
There are some challenges here. A bell sound is a damped oscillation, that is, the frequency remains the same but the amplitude diminishes to zero. Also, can I use simple square wave for frequency or do I have to produce a sine wave?
There is also the question of attack. I believe this is the high amplitude of the beginning of the bell sound.
LATEST NEWS IN LARRY KEEGAN’S WORLD OF EXPERIMENTS !!!!!!
April 17th, 2005IN BRIEF:
1. Gave a talk to the QRA radio club on PIC Microcontrollers
2. Wired up a MING xmtr & rcvr & got it working
but want to package it more nicely and affix some PICs to it
3. Stripped apart som RC cars & trucks and set up an
RC system with a small relay attached to rcvr
4. Writing a PGM to read the infrared sigs from a handheld REMOTE.
Interesting article in SERVO mag outlines methodollogies.
PWM seems to be the most popular I think zero pulses are about 400 usecs
wide & ONE pulses are about 1200 usecs wide. There are about 34 pulses
& about 12 of them unique and determine the individual code
5. I’m in the process of firing up some of my other old laptops
The hell with batteries – they are expensive . I plan to solder conect
wires to the contact points where batteries would connect. They operate on
a whole range of voltages.
AMAZING BREAK-THROUGHS !!!
February 6th, 2005HERE ARE THE BREAKTHROUGHS
(1) MY SPEAKING COUNTER WILL NOW COUNT CONTINUOUSLY TO 999
(2) MY PIC PROGRAMMER SOFTWARE NOW OPERATES A HUNDRED
TIMES FASTER!!
(3) MY DOS BATCH FILE NOW RUNS WITHOUT ANY INTERVENTION FROM
ASSEMBING THE PROGRAM THROUGH PRE-ERASING THE PIC, WRITING THE CONFIGURATION WORD, CREATING THE INTERMEDIATE FILE, TO LOADING THE PROGRAM ONTO THE PIC. IT ALL HAPPENS IN 15 TO 20 SECONDS.
A VOICE RECORDING CHIP
January 17th, 2005Well here it is! My setup for experimenting and building a project for the ISD2560 voice recorder chip.
You can see the cleaned up counter-top where I have assembled modules for the ISD2560 voice recorder chip itself, a PICmicrocontroller which talks to it, a
microphone card and an assembly for the loudspeaker output.
I’ve Cleaned Up My Shop
January 17th, 2005Take a look! For a while I couldn’t find my way around my shop!
My white counter-top was covered with resistors, batteries, capacitors, IC’s , wire, connectors, breadboards, PC boards, relays potentiometers,screwdrivers, pliers, wire strippers, scissors, electric tape, stands of solder, machine screws and nuts, pieces of metal of all shapes, relays and switches. Well, look what has happened!
A ROBOT THAT AVOIDS OBSTACLES!
August 1st, 2004Well here it is!
THE SENSBOT – a robot the senses obstacles
and navigates to avoid them.
PROXIMITY DETECTION FOR ROBOTS
July 11th, 2004Here is an e-mail I just sent to my friend George Gallant
all about a new area for me:
OBJECT DETECTION AND AVOIDANCE FOR ROBOTS
LIGHT-SEEKER WORKS!!
May 17th, 2004It works! The robot LIGHT-SEEKER was completed
and here ii is.
Here is how it works. It rotates around little by little
and checks for a light source ahead of it.
When it finds a light source it beeps and proceeds
in that direction. After a short distance it checks
if the light source is still there. If so it continues ahead,
otherwise it rotates again and seeks a light source.
A NEW ROBOT
May 10th, 2004This new robot is pictured on the right. It is called
STEPBOT and is powered by stepper motors.
