Pearl Chen pearlchen
pearlchen
/ bash_functions
Created
January 3, 2017 20:50
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| function serve() { | |
| local host=`hostname` | |
| local port="${1:-8888}" | |
| (sleep 1 && open "http://${host}:${port}/")& | |
| python -m SimpleHTTPServer "$port" | |
| } |
pearlchen
/ blinkTest.cpp
Last active
August 29, 2015 14:25
2 different versions of the bare minimum code required to blink an LED on pin 13 (aka J17-14) using an Intel Edison and C++.
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| #include "mraa.hpp" | |
| int main() | |
| { | |
| // set GPIO digital pin "13" to be an output | |
| mraa_gpio_context d_pin = mraa_gpio_init_raw(128); | |
| mraa_gpio_dir(d_pin, MRAA_GPIO_OUT_HIGH); | |
| // loop forever toggling the on board LED every second | |
| for (;;) { |
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| // example code of touch numbers (replaces getTouchNumber) | |
| #include <Wire.h> | |
| #include "Seeed_QTouch.h" | |
| #include <SeeedOLED.h> | |
| void setup() | |
| { | |
| Serial.begin(9600); |
pearlchen
/ lcd_text_helper.js
Last active
November 8, 2015 04:37
Scroll text across your Grove LCD screen using JavaScript on the Intel Edison or Intel Galileo. Video: https://twitter.com/PearlChen/status/588890387260903424. And check it out within a larger project: https://github.com/pearlchen/iot-smart-desk-clock
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| /* global setInterval: false, setTimeout: false, clearInterval: false, clearTimeout:false, module: false, console: false */ | |
| /** | |
| * Module exports. | |
| */ | |
| module.exports = LcdTextHelper; | |
| /** | |
| * LcdTextHelper constructor. |
pearlchen
/ intel-edison-grove-lcd-Jhd1313m1-example
Created
April 14, 2015 02:23
Make a little * dance across your Grove LCD screen using JavaScript on the Intel Edison or Intel Galileo. Video: https://twitter.com/PearlChen/status/587808490405625856
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| var mraa = require ('mraa'); | |
| /* | |
| If you get any mraa missing errors, run this on your board: | |
| $ echo "src mraa-upm http://iotdk.intel.com/repos/1.1/intelgalactic" > /etc/opkg/mraa-upm.conf | |
| $ opkg update | |
| $ opkg install libmraa0 | |
| */ | |
| var LCD = require ('jsupm_i2clcd'); | |
| /* |
pearlchen
/ convertDecToHex.html
Last active
December 27, 2015 01:19
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| <script> | |
| /** Convert a decimal number to a hex number. */ | |
| function convertDecToHex(dec) { | |
| var BASE = 16, | |
| result = ''; | |
| return getHex( dec ); | |
pearlchen
/ Lighthouse.ino
Created
October 19, 2013 19:43
Use analogWrite() to fade an LED up and down.
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| int ledPin = 6; // Note that pin 13 on the Uno doesn't support PWM! | |
| int brightness = 0; | |
| int stepValue = 1; | |
| void setup() { | |
| pinMode(ledPin, OUTPUT); // sets the pin as output | |
| } | |
| void loop() { | |
pearlchen
/ multiple_angular_services.js
Created
December 19, 2012 23:15
Need to create an AngularJS service that can implement multiple API URL paths, while also post "clean" data? This is my version for a solution. See the bottom of the gist for some more detail.
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| // YOUR ANGULAR SERVICE | |
| clientApp.factory('Mongo', function($resource) { | |
| // $resource(url[, paramDefaults][, actions]); | |
| return $resource('http://localhost\\:8000/api/:action/:huddleId', | |
| { | |
| action: '@action', | |
| huddleId: '@huddleId' | |
| }, | |
| { |
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| #include <Servo.h> | |
| //Servo | |
| Servo armServo; | |
| Servo baseServo; | |
| const int ARM_SERVO = 9; | |
| const int BASE_SERVO = 10; | |
| // motor constants & limitations | |
| const int minArmServoPos = 30; //don't go lower, will hit the base |
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| #include <Servo.h> | |
| //Servo | |
| Servo armServo; | |
| const int ARM_SERVO = 9; | |
| Servo baseServo; | |
| const int BASE_SERVO = 10; | |
| // drawing variables |
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