In today’s video we look at how to extend the range of an existing WiFi network by repeating the signal. This extension will be done using an ESP32 NodeMCU. This process also works for ESP32 only.
ESP32 as WiFi NAT router. It can be used as — Simple range extender for an existing WiFi network — Setting up an additional WiFi network with different SSID/password for guests or IOT devices.
Electronics
DIY Miliohmmeter for Measure Low Value Resistances
Measuring low resistances with a standard multimeter is difficult and very inaccurate. This device solves this problem and serves for accurate measurement of small resistances in the range of 0.1 ohm up to 50 ohms.
C64 Bass Guitar – Cool to be Square Wave?
Jeri shows a bass guitar she build from an old C64. It uses the original sound chip (SID 6581) for keytar and string sounds.
iPhone 12 Anti Repair Design – Teardown and Repair Assessment
Apple says they are aiming for zero climate impact by 2030. So to me that says a device should be able to be repaired when the time comes to, preventing it from becoming e-waste. But is that true?
NEW Raspberry Pi 400 Unboxing & Teardown! $70 retro emulator?
Let’s explore the NEW Raspberry Pi 400 “Complete Computer Kit”! We’ll unbox, teardown, test RetroPie, the keyboard, & more! Could this be the ultimate retrocomputing emulator?
How to use millis() function to multitask in arduino code.
In this video I am looking at using millis function in the code. Describing the advantages it has over using delay function. This video is also introducing the concept of multitasking in Arduino code.
Minimal metal detector made with an Arduino and a coil of wire
For an easy DIY metal detector setup, look no further than this project by creator “rgco.”
The handheld device uses a 20-60 turn coil of 26AWG enameled wire, connected across an Arduino Uno or Nano’s pins 8 and 10. A series of pulses is continuously sent out by pin 10, which are delayed in reaching pin 8 according to the inductance across the coil. As this coil approaches other metallic objects, the effective inductance changes, thus varying the delay in the signal reaching pin 10.
This effect is sensed by the Arduino, outputting chirps on a buzzer as audio feedback when metal is nearby. To convert it into a practical device, the Nano configuration is stuffed into a Tic Tac container, with the coil held at a distance with two skewer sticks.
AM/FM/SW Radio Receiver – Si4730 / Si4735
This Arduino radio receiver has an attractive look and nice features using an inexpensive color TFT / Arduino and fell componets.
It includes the indication of the frequency in large numbers in the style of vintage seven segments, two bargraphs for indicating the signal strength, selection of 7 BW filters for AM, indication of the wavelength of the band, 2 color themes, Stereo/Mono indication and 14 bands for coverage of LW / MW / SW / CB, ranging from 100kHz to 30MHz and the commercial 64-108MHz FM band.
Control DMX Lights with Arduino
DMX-512 is the standard for stage and special effects lighting. The Tinkerkit DMX shield for Arduino opens up a whole new world for creating simple and complex lighting effects with a simple Arduino.
RFID Smart Door Lock With ESP8266
In this tutorial I am going to show you how to build your own access control system with RFID and Arduino + Cloud logging of attendance.
It is a very good project for IoT beginners and enthusiasts, hope you like it.
