Search found 37 matches

by brianuno
Thu Mar 30, 2017 9:14 am
Forum: General Chit Chat
Topic: Vote circuit
Replies: 0
Views: 2671

Vote circuit

I finished the SparkFun tutorial series. That was cool. They are all very simple, at least superficially, but each one made me think. The example with far-reaching significance is a sketch and circuit for blinking one light with two buttons. Wow, I thought, when I first got it working. The only thin...
by brianuno
Wed Mar 29, 2017 12:23 pm
Forum: SparkFun Product Questions
Topic: Blink LED until input stops
Replies: 0
Views: 397

Blink LED until input stops

I need help modifying a sketch for my own purposes. I am trying to blink a LED which is now a steady glow. This is the tutorial I am using for a guide: https://learn.sparkfun.com/tutorials/pir-motion-sensor-hookup-guide , including the stock sensor. Up to now, by copying blink code from various sket...
by brianuno
Fri Mar 17, 2017 12:13 pm
Forum: General Chit Chat
Topic: Mooguino
Replies: 2
Views: 2755

Re: Mooguino

Thank you. I mean that because writing code, compared to cut-and-paste, is trying. I like your transcription of the notes better than the alternative provided. That pitch change to NOTE_A5, can't be intentional. I mean, try singing that. My friends would look at me.
by brianuno
Thu Mar 16, 2017 3:22 pm
Forum: General Chit Chat
Topic: Mooguino
Replies: 2
Views: 2755

Mooguino

Any musician-programmers in the house? I need help with choosing tones. I have been following the SparkFun beginner tutorials. I'm as far as sounding a buzzer. The circuit is simple. Find a little Piezo device and plug the black wire into the Arduino board's ground pin hole. Plug the red wire into p...
by brianuno
Fri Mar 10, 2017 2:40 pm
Forum: General Chit Chat
Topic: Serial Plotter
Replies: 0
Views: 2342

Serial Plotter

I am posting in this forum because my question is still undefined. For background, it concerns a question I asked about a tutorial for dimming a LED with a photoresistor, a week ago. The experiment worked, but in my opinion the effect was not robust, because judging the dimming or the opposite of a ...
by brianuno
Wed Mar 08, 2017 5:17 pm
Forum: Arduino
Topic: Data Types in Arduino
Replies: 0
Views: 285

Data Types in Arduino

At the end of the beginner's tutorial series is a postscript "Going Further" introduction to data types, link below. With only an Arduino board, the sketch written for the topic, and the serial monitor, you can do arithmetic, in other words, a calculator. Once uploaded, you can change values for x a...
by brianuno
Tue Mar 07, 2017 5:02 pm
Forum: General Chit Chat
Topic: Experiment Kit Tutorials 8, 9, 10
Replies: 0
Views: 2190

Experiment Kit Tutorials 8, 9, 10

After completing these tutorials it's hard not to notice automated mechanical devices usually taken for granted, printers, for instance. The servo element used in #8, followed by the motor used in #9 and #10 demonstrates an important difference between them. A servo is for simple repeat motions like...
by brianuno
Tue Mar 07, 2017 4:53 pm
Forum: General Chit Chat
Topic: Vibration sensors help
Replies: 3
Views: 2748

Re: Vibration sensors help

Why don't you start with an accelerometer? They are inexpensive. I picked one up at an electronic hobby store for about $12.00 plus sales tax. The unit is more complex than most sensors. It has 8 pins. Mine is the 3-axis type. I only want to detect motion, not direction of motion, therefore, the cir...
by brianuno
Thu Mar 02, 2017 2:04 pm
Forum: General Chit Chat
Topic: Read code on a micro circuit
Replies: 8
Views: 2635

Re: Read code on a micro circuit

This is getting mind-boggling, again. I am also getting side-tracked from what I intended to do, but the topic is fascinating. It reminds me of using command prompt on a PC. Theoretically, the IDE might be installed on a PC computer. Then you need a display to view the serial monitor, larger memory,...
by brianuno
Thu Mar 02, 2017 1:56 pm
Forum: General Chit Chat
Topic: Salvaged part project
Replies: 13
Views: 3239

Re: Salvaged part project

Yes, I tried the other baudrates. The characters got larger and larger, but still gibberish. I am having second thoughts about this experiment. The author says he had to try several fans to find one that printed to the serial monitor. Any casual reader of this thread might not have even one to play ...
by brianuno
Thu Mar 02, 2017 12:50 pm
Forum: General Chit Chat
Topic: Read code on a micro circuit
Replies: 8
Views: 2635

Re: Read code on a micro circuit

I was searching old posts for another project, and I came across the term EEPROM, or electrically erasable programmable read-only memory. The key idea being read-only. I suppose that is why any code existing on a board can't be discovered. I searched EEPROM and near the top of the results is this li...
by brianuno
Thu Mar 02, 2017 11:45 am
Forum: General Chit Chat
Topic: Salvaged part project
Replies: 13
Views: 3239

Re: Salvaged part project

There's a page about voltage dividers, which I expect to return to again and again, includiing potentiometers: https://learn.sparkfun.com/tutorials/voltage-dividers . Thanks for keeping the thread alive. I set up the experiment for reading a fan. The fan spins when the button is pushed, but the seri...
by brianuno
Thu Mar 02, 2017 11:29 am
Forum: General Chit Chat
Topic: Read code on a micro circuit
Replies: 8
Views: 2635

Re: Read code on a micro circuit

I did not think it possible -unless by the author of the bootloader, in this instance Arduino. And, that's not open source, amirite?
by brianuno
Wed Mar 01, 2017 4:06 pm
Forum: General Chit Chat
Topic: Salvaged part project
Replies: 13
Views: 3239

Re: Salvaged part project

This is an example of a library file:

Code: Select all

#include <Servo.h>
by brianuno
Wed Mar 01, 2017 3:48 pm
Forum: General Chit Chat
Topic: Salvaged part project
Replies: 13
Views: 3239

Re: Salvaged part project

I think I see the difference between pulse and divider. I just tried the circuit again. The potentiometer could be replaced by two push button switches, turn right and turn left. The servo doesn't actually turn the same degrees as the knob. A turn of any degree either way rotates the servo full 90 i...