ESP32 WiFi Camera
In this post, I’ll show you how to program the ESP32 Camera board to live stream the video feed to your browser.
Lattice iCE40 FPGA IceStorm Tutorial
This tutorial will cover the hardware and software setup for the icestick development board that uses an iCE40 FPGA. The IceStorm open source toolchain will be used for programming the board instead of the vendor tools. For the demonstration, we’ll make a simple binary counter that will display its value with the onboard LEDs. The logic design will be defined/coded with Verilog.
DIY Portable 100W LED Torch
In this post, I’ll show the portable 100W LED torch floodlight I made. I originally bought the 100W LED and lens kit many years ago but have just recently decided I would finally make an LED flashlight out of it. A lot of the flashlights online usually don’t have a very large battery capacity and need to be recharged quite often if you use them for an extended period. The problem is a lot of those flashlights also use 16850 batteries that have to be taken out of the flashlight to be recharged with a charger. This prompted me to create my own flashlight with a large battery capacity that is also easily rechargeable without having to take out the batteries every time.
Docker Cheatsheet
This post is a cheatsheet for Docker. I wrote this for myself so if I ever have trouble remembering some of the more common commands I can just look them up on my own site. And maybe someone out there on the internet will find this useful for themselves as well.
DIY Raspberry Pi Microscope
In this post, I’ll show you a Raspberry Pi microscope I made for soldering and inspecting PCBs. The great thing about it is that it has a long working distance. This enables the microscope to be mounted on the shelf above my workbench so it doesn’t get in the way. An additional benefit is that the image doesn’t shake if you bump the table when working.
T-SQL Cheatsheet
This short post is a cheat sheet for transact SQL or T-SQL for Microsoft Server. I wrote this for myself so if I ever have trouble remembering some of the more common queries(as I don’t work with databases on a daily basis) I can just look them up on my own site. And maybe someone out there on the internet will find this useful for themselves as well.
Serial Port Communication With Powershell
In this short post, I’ll show you how to read and write to/from the serial port using Powershell.
Measure The Length Of Coax With An Oscilloscope
In this post, I’ll show you how to measure the length or find a break in a coaxial cable with the help of your oscilloscope and waveform generator. We can do this using signal reflection that occurs when a transmission line is not terminated correctly.
Measuring Capacitors And Inductors With Your Oscilloscope
In this post, I’ll show you how to measure the value of capacitors and inductors with your oscilloscope and waveform generator. To measure the capacitor we’ll simply which will charge(periodically with a square wave) it through a resistor and measure how much time it takes the capacitor to charge to 63% we can then calculate its value according to the RC time constant formula which is t = RC. We’ll rearrange it to C = t/R to get out the capacitance.
Potential Phishing Attack Vector Through Google Analytics
Some tome ago(few years) I was using Google Analytics to check the traffic to this very site. I was looking at the “pages report” where it shows your most visited pages. I discovered that I was getting an error(This site can’t be reached) when I click the hyperlink which was supposed to take you to that particular page on your website.