christianhent

<script>
// ... existing map code
// ...
// set {zoomControl: false} to disable the default zoom control
var map  = new L.Map('map',{
  fullscreenControl: true,
  zoomControl: false,
  fullscreenControlOptions: {
    position: 'topleft'
  },

christianhent

<script>
// ... existing map code
// ...
map.fitBounds(geoJson.getBounds());
// create the zoomhome-control and add it to the map
var zoomHome = L.Control.zoomHome();
zoomHome.addTo(map);
</script>

christianhent

<?php
// includes Font-Awesome, goes directly above leaflet.css
$doc->addStyleSheet('https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css');
?>

christianhent

<script>
//
var tile = new L.TileLayer('http://a.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png', {
maxZoom: 18,
  attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> ' +
  'contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">' +
  'CC-BY-SA</a>. Tiles &copy; <a href="http://carto.com/">' +
  'CARTO</a>'
});
</script>

christianhent

Ganache & Truffle Console cheat sheet

ERC20 Token contract

YourToken.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

import "@openzeppelin/contracts/access/Ownable.sol";

christianhent

ESP32.LINKSTATION 2

linkstation.mp4

What it is and how it works

An ESP32 WiFi cryptomonitor to display cryptocurrency prices based on quotes obtained via cryptocompare.com API. The code built on top of the Arduino framework is even for beginners easy to customize.

christianhent

#include <Thread.h>

int pwmPins[] = {3, 5, 6, 9, 10, 11};  
int pwmCount = 6;     
int brightness = 0;    // how bright the LED is
int fadeAmount = 5;    // how many points to fade the LED by

int ioPins[] = {1, 0, A5, A4, A3, A2, A1, A0, 2, 4, 7, 8, 12, 13};
int ioCount = 14;
int chaseDirection = 1;