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//
//! Arduino thermostat to control a beer fridge to use it as an environmental chamber.
//
// GNU GPL v2
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// Top level model
//
$pp1_colour = "grey";

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points = [[-0.0133416, -2.50818, 0.25], [-0.012326, -2.52659, 0.157319], [-0.00943391, -2.57901, 0.0787476], [-0.0051056, -2.65746, 0.0262479], [0, -2.75, 0.0078125], [0.0051056, -2.84254, 0.0262479], [0.00943391, -2.92099, 0.0787476], [0.012326, -2.97341, 0.157319], [0.0133416, -2.99182, 0.25], [0.012326, -2.97341, 0.342681], [0.00943391, -2.92099, 0.421252], [0.0051056, -2.84254, 0.473752], [0, -2.75, 0.492188], [-0.0051056, -2.65746, 0.473752], [-0.00943391, -2.57901, 0.421252], [-0.012326, -2.52659, 0.342681], [0.27588, -2.49259, 0.25], [0.277908, -2.51092, 0.157319], [0.283683, -2.5631, 0.0787476], [0.292327, -2.64119, 0.0262479], [0.302523, -2.73331, 0.0078125], [0.312718, -2.82543, 0.0262479], [0.321362, -2.90352, 0.0787476], [0.327137, -2.9557, 0.157319], [0.329165, -2.97403, 0.25], [0.327137, -2.9557, 0.342681], [0.321362, -2.90352, 0.421252], [0.312718, -2.82543, 0.473752], [0.302523, -2.73331, 0.492188], [0.292327, -2.64119, 0.473752], [0.283683, -2.5631, 0.421252], [0.277908, -2.51092, 0.342681], 

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// ESP8266 Arduino sketch to control a variac with a stepper motor
// GNU GPL
// NopHead
// hydraraptor.blogspot.com
//
#include <ESP8266WiFi.h>          //ESP8266 Core WiFi Library (you most likely already have this in your sketch)
#include <ArduinoOTA.h>
#include <DNSServer.h>            //Local DNS Server used for redirecting all requests to the configuration portal
#include <ESP8266WebServer.h>     //Local WebServer used to serve the configuration portal
#include "WiFiManager.h"

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#!/usr/bin/env python

import pycurl
from StringIO import StringIO
from time import *
import re

def curl(url):
    buffer = StringIO()
    c = pycurl.Curl()

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float voltfloat = 0, currentfloat = 0, wattfloat = 0; // real unit values

float voltscalefactor = 0.0307162746 / 256;           // calibration constants vary from device to device
float currentscalefactor = 1.553 / 256000;   
float wattscalefactor = 15.49521794871 / 2560;  

// the loop function runs over and over again forever
void loop() {
  digitalWrite ( GREEN_LED, !!(millis() & 512) );           // flash the green LED
  server.handleClient();                                    // run web server

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int   voltint = 0, currentint = 0, wattint = 0;       // raw values

void ICACHE_RAM_ATTR sync_isr() {                           // Sync pin interrupt on falling edge
  SPI1S |= SPISSRES;                                        // Reset HSPI slave
  SPI1S &= ~SPISSRES;
  SPI1CMD = SPICMDUSR;                                      // Start HSPI slave
  static bool glitch = false;
  if(data_ready) {                                          // If a data has been received by the HSPI
    data_ready = false;
    int volts = (data[0] << 16) + (data[1] << 8) + data[2]; // assemble 24 bits

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const int length = 12;              // length of packet minus the first byte
uint8_t data[length];               // raw data received
volatile bool data_ready = false;   // set by HSPI interrupt handler when data is received

void ICACHE_RAM_ATTR hspi_slave_isr_handler(void *) {
    uint32_t istatus = SPIIR;
    if(istatus & (1 << SPII1)) {    //SPI1 ISR
        uint32_t status = SPI1S;
        SPI1S &= ~(0x3E0);          //disable interrupts
        SPI1S |= SPISSRES;          //reset

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void hspi_slave_begin() {
    pinMode(SCK, SPECIAL);                  // Both inputs in slave mode
    pinMode(MOSI, SPECIAL);
    SPI1C = 0;                              // SPI_CTRL_REG MSB first, single bit data mode.
    SPI1S = SPISE | SPISBE | SPISCD | 0x3E0;// SPI_SLAVE_REG, set slave mode, WR/RD BUF enable, CMD define, enable interrupts
    SPI1U = SPIUSSE;                        // SPI_USER_REG.  SPI_CK_I_EDGE
    SPI1CLK = 0;                            // SPI_CLOCK_REG
    SPI1U1 = 7 << SPILADDR;                 // SPI_USER1_REG, set address length to 8 bits
    SPI1U2 = 7 << SPILCOMMAND;              // SPI_USER2_REG, set command length to 8 bits
    SPI1S1 = (length * 8 - 1) << SPIS1LBUF; // SPI_SLAVE1_REG, SPI_SLV_BUF_BITLEN = 12 bytes

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layer_height = 0.25;    // slicer layer height
extrusion_width = 0.5;  // slicer extrusion width
nozzle = 0.45;          // extruder nozzle aperture
squeezed_wall = extrusion_width - layer_height / 2 + nozzle / 2 + extrusion_width / 2;

wall = 2 * extrusion_width;
w = 20;
h = 10;
base = 1;
difference() {

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//
// GNU GPL v2
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// Adapts ESP12 module to 0.1" grid.
//
eps = 1/128;            // small fudge factor to stop CSG barfing on coincident faces.
layer_height = 0.25;    // slicer layer height
extrusion_width = 0.5;  // slicer extrusion width