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Jay Wiggins funkfinger

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funkfinger / sine.c
Created May 11, 2011 04:00
8-bit sine wave table
/* ripped from http://aquaticus.info/pwm-sine-wave */
uint8_t sine_wave[256] = {
0x80, 0x83, 0x86, 0x89, 0x8C, 0x90, 0x93, 0x96,
0x99, 0x9C, 0x9F, 0xA2, 0xA5, 0xA8, 0xAB, 0xAE,
0xB1, 0xB3, 0xB6, 0xB9, 0xBC, 0xBF, 0xC1, 0xC4,
0xC7, 0xC9, 0xCC, 0xCE, 0xD1, 0xD3, 0xD5, 0xD8,
0xDA, 0xDC, 0xDE, 0xE0, 0xE2, 0xE4, 0xE6, 0xE8,
0xEA, 0xEB, 0xED, 0xEF, 0xF0, 0xF1, 0xF3, 0xF4,
0xF5, 0xF6, 0xF8, 0xF9, 0xFA, 0xFA, 0xFB, 0xFC,
@funkfinger
funkfinger / Makefile
Created April 27, 2011 02:13
My AVR ATTiny85 Makefile
DEVICE = attiny85
CLOCK = 1000000
PROGRAMMER = -c usbtiny
OBJECTS = main.o
FUSES = -U lfuse:w:0x62:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
# generated by http://www.engbedded.com/fusecalc/
AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE)
@funkfinger
funkfinger / main.c
Created May 4, 2011 07:23
ATTiny85 3 channel software PWM to drive RGB LED
// based largely on Atmel's AVR136: Low-Jitter Multi-Channel Software PWM Application Note:
// http://www.atmel.com/dyn/resources/prod_documents/doc8020.pdf
#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#define CHMAX 3 // maximum number of PWM channels
#define PWMDEFAULT 0x00 // default PWM value at start up for all channels
@funkfinger
funkfinger / amazon_echo_ha_bridge_rest_command
Last active January 10, 2018 04:50
REST post to configure amazon-echo-ha-bridge Java app
{
"name": "master bedroom",
"deviceType": "switch",
"onUrl": "http://<<VERA IP ADDRESS>>:3480/data_request?id=action&output_format=json&serviceId=urn:micasaverde-com:serviceId:HomeAutomationGateway1&action=RunScene&SceneNum=<<VERA ON SCENE ID>>",
"offUrl": "http://<<VERA IP ADDRESS>>/data_request?id=action&output_format=json&serviceId=urn:micasaverde-com:serviceId:HomeAutomationGateway1&action=RunScene&SceneNum=<<VERA OFF SCENE ID>>"
}
@funkfinger
funkfinger / sinatra_before_filter.rb
Created April 1, 2010 12:23
before do
# remove and grab the file extension
request.path_info.sub! %r{\.([^\./]+)$}, ''
@format=$1 || 'html'
@charset=mime_type($1) || 'text/html'
content_type @charset, :charset => 'utf-8'
end
@funkfinger
funkfinger / Makefile
Created February 27, 2016 05:32
a Makefile for ATTiny2313 and AVR Dragon
# ----------------------------------------------------------------------------
# Makefile for lcd library
# Author: Peter Fleury
# File: $Id: Makefile.lcd,v 1.5 2015/01/31 19:59:32 peter Exp $
#
# Adjust MCU and F_CPU below to your AVR target
# Optionally define -D_LCD_DEFINITIONS_FILE in the CDEFS section below
# if you want to use a separate file for display and target specific defines
#----------------------------------------------------------------------------
# usage:
@funkfinger
funkfinger / neopixel_brightness_test_not_working.ino
Created October 7, 2015 13:55
Demo of NeoPixel library not working as expected
// example sketch to demonstrate percieved neopixel library error.
// expect green > off(-ish) > blue > off > red > off > green > off(-ish) > blue > off > red
// get green > off(-ish) > blue > off > red > off > off > off > blue > off > red
#include <Adafruit_NeoPixel.h>
#define PIN 0
Adafruit_NeoPixel strip = Adafruit_NeoPixel(1, PIN, NEO_RGB + NEO_KHZ800);
@funkfinger
funkfinger / my_remote_temp_server.ino
Created October 5, 2015 05:00
Huzzah 8266 / DHT22 example mashup
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
//////////////////////////
// DHT sensor stuff....
//////////////////////////
#include "DHT.h"
@funkfinger
funkfinger / gist:c2ce3087475e6feeaa60
Last active September 27, 2015 21:09
WS2801 screw style connector pinout from China (kutop.com)
female end of strand is start and is pin-ed like so...
/-----------\
| v |
| vcc | gnd |
| led | clk |
\-----------/
@funkfinger
funkfinger / gist:1028804
Created June 16, 2011 06:55
AVR Makefile
DEVICE = attiny2313
#DEVICE = attiny85
CLOCK = 1000000
PROGRAMMER = -c usbtiny
#PROGRAMMER = -c dragon_hvsp -P usb
# attiny2313 doesn't like dragon_hvsp setting...
#PROGRAMMER = -c dragon_pp -P usb
OBJECTS = main.o