5V to 400V DC-DC converter
https://www.electronics-lab.com/5v-to-400v-dc-dc-converter/
Bob has tipped us with his latest project. It’s a 5V to 400V DC-DC Converter based on MC34063 IC and can be used in various projects such as Geiger–Müller counters. A small and cheap 5V/400V DC/DC converter can be useful in many DIY projects, e.g Geiger–Müller counters. I will present here one of such DC/DC converter based […]
Large 8×8 LED Matrix Display
https://www.electronics-lab.com/large-8x8-led-matrix-display/
jollifactory @ instructables.com has published a large 8×8 LED Matrix Display which is driven by a MAX7219 and Arduino. For this project, we will be building a single color large LED matrix display which is made up of a few large 8×8 LED matrix modules daisy-chained together. Each of these 8×8 LED matrix modules is around […]
8×8 RGB Led Matrix with WS2812 driver with Arduino Uno
https://www.electronics-lab.com/8x8-rgb-led-matrix-with-ws2812-driver-with-arduino-uno/
In this video we learn how to use this 8×8 RGB LED matrix. This matrix is using the WS2812 driver and it is great, because each LED is individually addressable. Only one microcontroller pin is required to control all the LEDs, and you get 24 bit color for each LED. 8×8 RGB Led Matrix with […]
Arduino Network Analyzer
https://www.electronics-lab.com/arduino-network-analyzer/
Brett Killion has published his Arduino shield a Network Analyzer on an Arduino Shield which covers from 0-72MHz. The network analyzer shield uses an Analog Devices AD9851 DDS chip clocked at 180MHz which will output a sine wave at any frequency from 0Hz and 72MHz. The DDS output is filtered with a Butterworth LPF and […]
DIY FPGA Programming
https://www.electronics-lab.com/47653-2/
TC-Engineering has documented their efforts to program a Spartan 6 FPGA using a DIY PCB. The hardware part and software are discussed on the link below. I’ve been thinking about building stuff with FPGA’s for a while, and usually get turned away because FPGA’s are considerably harder to implement than microcontrollers since they have no on-chip […]
Power-on Reminder with LED Lamp
https://www.electronics-lab.com/power-on-reminder-with-led-lamp/
Many a times equipment at workstations remains switched on unnoticed. In this situation, these may get damaged due to overheating. Here is an add-on device for the workbench power supply that reminds you of the power-on status of the connected devices every hour or so by sounding a buzzer for around 20 seconds. It also […]
5A Adjustable Regulated Power Supply
https://www.electronics-lab.com/5a-adjustable-regulated-power-supply/
This project provides a variable output voltage ranging from 1.2 to 32 V @ 5 A. Project based on LM338K IC, LM338K is adjustable 3 terminal positive voltage regulator capable of supply in excess of 5A over a 1.2V to 32V output range, simple circuit consist few components. Features Input Supply : 24 VAC or […]
5A Adjustable Regulated Power Supply
https://www.electronics-lab.com/project/5a-adjustable-regulated-power-supply/
This project provides a variable output voltage ranging from 1.2 to 32 V @ 5 A. The project based on LM338K IC. LM338K is an adjustable 3 terminal positive voltage regulator capable of supplying a maximum of 5A over a 1.2V to 32V output range. The circuit is simple and consists of a few components. […]
Connecting HC-05 Bluetooth Module to Arduino
https://www.electronics-lab.com/connecting-hc-05-bluetooth-module-to-arduino/
TechDepot Egypt @ instructables.com has published a tutorial on how to connect a HC-05 Bluetooth module to Arduino. Turorial shows how to connect the module with Arduino and example code is included. It is worth noting that the HC-05 power in (Vcc) uses 5V, while the transmit and receive (TXD and RXD) logic signal uses […]
Isolated Circuit Digitally Indicates 120-/220-V Line Voltage
https://www.electronics-lab.com/isolated-circuit-digitally-indicates-120-220-v-line-voltage/
Edward K. Miguel @ electronicdesign.com has published a circuit that has output high when the votlage in input is 220V and output low when the voltage is 110V. This is often useful on motor control and power supply systems. The circuit illustrated in the figure monitors the ac line and provides a basic output indicating whether […]