I've started by laying out the five boards in Eagle 9.52. Boards are now being ordered through JLC. All parts have been ordered through Mouser and Digikey - however sourcing a small meter and solar panel that will match have been a bit of...
Well, initial testing was more difficult than expected - took about five hours just to get a couple of basic circuits working. Made a number of incorrect assumptions / mistakes including:Assuming it might be differences between components (germanium...
As the title says, this is a preliminary test of the first version of the multimeter. Before the test, I basically calibrated it using my Fluke 101 as a reference. The results of the test are as follows: 2.5V Error: 0.569, Coeff of Var: 0.0102 5V Error:...
There's not much to this build: Mount the monitor arms to your bench. Follow the manufacturer's instructions, or wing it like I did. I figured out where I wanted the scope to end up when in use and marked the location on my bench. Used a 1.5" hole...
Sometimes, when making your own devices on microcontrollers, there is a need to display huge amounts of information on a display and to use a bigger screen for ease of perception. Unfortunately, there are no ready-made and budget-friendly solutions for...
First of all, you should pay attention to the ROM used. The flash-ROM chip from an old computer motherboard has a finicky parallel interface where the address is written in two runs. This complicates the operating logic and increases access time. Additionally,...
At first, we need to prepare the environment for ESP32 development board programming in arduino, and you can cheak this guide.This is a library for our Monochrome OLEDs based on SSD1306 drivers. #include This library allows you to communicate with...
It's have simple schematic, for save pins I used Charlieplexing(35 components in total): https://en.wikipedia.org/wiki/CharlieplexingIn this project i use for charging 12 light sensor BPW34S, on clear sun one cell make 0.5-0.6 V and ~2 mA, connect its...
Starting project by learning more about eggs.. I'd like to figure out how to create a nice 3D printed egg shape that can hold a circuit board, battery, and motor assembly. I'll start by printing off some free variants from thingiverse. Ultimately I want...
Obligatory title. This project has already been underway for months and will likely continue to evolve for as long as I can. Since my workshop is in my basement with no windows, I wanted a way to keep an eye on the outside world. I don't...
ThingSpeak Is The Open IoT Platform With MATLAB Analytics. Register and log in to your account Define the parameter you want on the Channel page and save it. On the API keys page, you can find the API key used to write the data, and you can see...
First, we need to prepare the environment for ESP32 development board programming in Arduino, and you can check this guide.RadioLib library is a wireless communication library. It supports a variety of wireless communication modules, including LoRa,...