Blog

WeakSignalTransmitter - part 3 - signal generation and testing

2021-04-25T14:14:32Z

It has been a long time since my last blog post (WeakSignalTransmitter - part 2 - filter design ) but the Si5351 is still not available and I had other things to do. But I managed to get a breakout board for the Si5351 and attached it to my filt...(read more)

Color Detector

2021-03-17T18:35:12Z

Things Required:Components1. Arduino Uno2. Arduino Nano3. Breadboard4. Jumpers5. Potentiometer6 LCD 16 * 27. I2C Module8. LDR Module9. RGB LED10. Resistors if needed. Software:Arduino IDE Analog to Digital Converter Module:ATMega328P ...(read more)

Drone Motor Thrust Tester

2021-03-16T11:44:00Z

Drone Motor Thrust Tester 1. Introduction 2. Idea 3. Plan 4. Design Mechanical design Main construction - wooden planks Main Plank Leg Plank Vertical Plank Bracing Plank Offcut Load cell and motor mount Motor Adapter Motor Plate 3D printed...(read more)

WeakSignalTransmitter - part 2 - filter design

2021-03-16T02:50:15Z

To get a fully (mostly) analog signal out of the Si5351 the signal needs to be filtered. regulatory limits and calculations I plan to use my transmitter mostly in the 50 MHz, 70 MHz and 144 MHz ham radio bands.Radio regulations say (at leas...(read more)

Final Countdown - ADC from scratch demo video

2021-03-15T21:20:23Z

www.youtube.com/watch In this video, I demonstrate how the visualized ADC (vADC) works. For the final version of the project, I put all of the analog electronics onto perma-protoboards. I really like working with these because they make converti...(read more)

HEART RATE MONITORING WRIST BAND

2021-03-15T16:08:23Z

Data ConversionEnter Your Electronics & Design Project for a chance to win a $200 shopping cart!Submit an Entry Submit an Entry Back to homepage Project14 Home Monthly Themes Monthly Theme Poll Heart rate, body temperature and blood press...(read more)

Micro Servo Tester #3 : Now With Pulse Generator! (Video now working)

2021-03-15T13:51:29Z

I have now written the code to produce pulses to implement the pulse generator mode of the Micro Servo Tester, see the listing below. I have only included the pulse generatong function as that is the only part that has changed. void pulseg...(read more)

Digital Voltmeter

2021-03-15T06:19:36Z

Hello Everyone, My name is Harji Nagi. I am currently a third-year student studying electronics and communication engineering from Pranveer Singh Institute Of Technology (PSIT), Kanpur(Uttar Pradesh).I have a keen interest in robotics, Arduino, Artif...(read more)

Binary Search - The SAR ADC's best kept secret

2021-03-15T01:33:00Z

Inside of every successive-approximation-register-analog-to-digital converter (SAR ADC) is a digital-to-analog converter (DAC!) This DAC generates an analog voltage that gets compared to the input signal. By changing the DAC, it is possible to find...(read more)

WeakSignalTransmitter - part 1

2021-03-08T23:56:52Z

Foreword This project is built around the clock generator Si5351 from Silicon Labs ( https://www.silabs.com/timing/clock-generators/cmos/device.si5351a-b-gm#specs ). Unfortunately this device seems to have a very bad availability and I don...(read more)

DrawBo-A complete artist in itself

2021-03-08T20:20:47Z

The initial idea was to make a robot named “DrawBo” which can draw and teach drawing. But now this idea has been broadened to drawing on the glass, or on the fabrics .Apart from this, the robot can make a sketches and drawing of anything and everythi...(read more)

Rough vADC demo, ADCing

2021-03-07T22:24:00Z

players.brightcove.net/.../index.html Short update. During my live stream today, we played with a small TFT LCD module. I shot this short video after the stream. It demonstrates the ADC digitizing an input voltage of 4.23 volts. Notice the 4-...(read more)

SERVO MOTOR CONTROL WITH ARDUINO AND SERVO ULTRASONIC SENSOR

2021-03-06T14:42:24Z

COMPONENTS REQUIRED: 1. ULTRASONIC SENSOR(HC-SR04) 2. SERVO MOTOR 3. ARDUINO UNO BOARD CONNECTIONS: CONNECTIONS copy code from here #include <Servo.h> Servo servo1; int trigPin = 9; int echoPin = 8; long distan...(read more)

WIRELESS ELECTRICITY TRANSMISSION

2021-03-06T14:35:51Z

INTRODUCTION this project is based on the principle of electromagnetic introduction, this phenomenon was discovered by an English scientist Michael Faraday in 1831 , according to this principle if a conductor is placed in a varia...(read more)

Micro Servo Tester #2 : Now With OLED Display and Button

2021-03-06T14:23:00Z

I have made some progress with my combined servo tester and pulse generator project. I am happy with the servo tester part so I have decided to add an OLED display (128 x 64) and a button to select different modes. The Servo Tester will be the first...(read more)