Use Alexa to tell your door sign what message to display. Things used in this project Hardware components Arduino MKR1000 × 1 Waveshare 200×200, 1.54inch E-Ink display module × 1 18650-Type Lithium Ion Battery (generic) × 1 18650-Type Battery Holder (generic) × 1 Breadboard (generic) × 1 Software apps and online services Arduino IDE Amazon
Alexa Controlled Door Sign Demo Continue Reading
Being electronics engineers, we consistently rely on meters and instruments to gauge and study the functionality of a circuit. From basic multimeters to advanced power quality analyzers or DSOs, each device serves specific purposes. Many of these gauges are easily accessible and can be bought depending on the measurements needed and their precision. However, there
Arduino Wattmeter: Measure Voltage, Current and Power Consumption Continue Reading
Position control using wifi from a smartphone sounds too good to be true? Do it with MKR1000. Things used in this project Hardware components Arduino MKR1000 × 1 Hand tools and fabrication machines 3D Printer (generic) Story Many position control use steppers because they are easy to deal with and are cheap. RC servos are
Control the Position of a Continuous Rotation Servo via WiFi Continue Reading
Programming has always been fun and it just got a lot better with development platforms like Arduino. Almost every programmer out here would have tried to develop some kind of game using the language that they learning/practising. This helps them to tune their programming skills in a fun yet productive way. I have been a
Space Race Game using Arduino and Nokia 5110 Graphical Display Continue Reading
This guide describes the pinout of the ESP32 development board and concentrates on ESP32 devkit, in particular. Actually, the ESP32 devkit comprises of the ESP-WROOM-32 which actual implementation we shall be implementing throughout the two main modules. It is worth admitting that there are several different chip models of the ESP32 family in the market.
ESP32-WROOM-32 (ESP-WROOM-32) Continue Reading
GPIO pins of ESP32 DEVKIT As previously stated, the chip on this board contains 48 GPIO pins, although not all pins are reachable via dev boards. The ESP32 devkit features a total of 36 pins, with 18 pins located on each side of the board, as illustrated in the image provided. There are 34 GPIO
esp32 devkit v1 pinout Continue Reading
The circuit presented here can automatically charge a 12V, 7Ah battery, or above. Special features of the charger are as follows. It automatically controls the charging current as per the status of the battery. Battery voltage level as well as charging status are indicated on the LCD display. The charger maintains float voltage, if battery
Arduino-Controlled 12V Battery Charger Continue Reading
The presence of 12-Multi-National Digital clocks is very common at the lobby / front desk of star hotels, showing time & dates of several countries where from most of the guests to arrive to stay at the hotel. One common feature of these clocks is that they are majestically looking elegant dial clocks! I tried
12-Multi National Digital Clock on Arduino UNO Continue Reading
Monitoring the temperature of a transformer or electric motor winding involves data acquisition. This project is developed to monitor the temperature of an electric motor and a transformer with high accuracy, incorporating display and alarm facility. This circuit can be installed near a transformer winding or a motor’s location, or it can be attached to
Arduino-Based Coil Winding Temperature Recorder and Alarm Generator Continue Reading
Metal oxide semiconductor field effect transistor (MOSFET) is a semiconductor device widely used for switching applications and amplifying electronic signals. While the facility to determine the type and pin configuration of bipolar junction transistors (BJTs) are available in digital multimeters (DMMs) used in the laboratory, most DMMs do not provide such features for MOSFETs. This
Arduino-Based MOSFET Terminal Identification System Continue Reading
