Programming The Attiny45 With An Arduino As ISP Programmer
In this post, I’ll show you how to program the Attiny microcontrollers via the Arduino IDE using an Arduino board as an ISP programmer.
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.
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.
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.
Random Projects
In this post I will document some of my smaller projects that don’t deserve a whole blog post of their own.
Cheap DIY Spectrum Analyzer
In this post, I’ll show you how to make a cheap portable spectrum analyzer from a TV receiver dongle. The dongle gets sold as a TV (DVB-T) however its an SDR(software defined radio) which means that it can be used to receive pretty much any RF signal(depending on the chip used up to 1-2 GHz) and turn it into a digital one to be later processed by software.
IR Distance And Motion Sensor
Usually, you would just buy the whole IR module which contains the transmitter, receiver, and amplifier. However, in this post, I’ll show you how you can make your own IR distance sensor/motion detector module.