arduino-diy

[arduino-diy]

Rechargeable 3D Printed Humidifier

Humidifiers add moisture to the air. They can help people with dry skin, allergies, and respiratory problems. They may also help in preventing influenza and reduce snoring. I bought this AU$2 USB Mini Humidifier DIY Kit from AliExpress and went ahead and created a cute little 3D container for it. In this tutorial, I will show you guys how I designed and assembled the humidifier circuit into the 3D model.

[arduino-diy]

4x4x4 PCB LED CUBE

Bring life to your home with this enchanting 4x4x4 LED cube. From static to flashing, chasing, or fading this cube can be programmed to display many different types of 3D LED transitions. This customizable PCB LED cube is super easy to make and fun to have in your home. Go ahead and create a forest of these cubes using various color LEDs to enhance the beauty of your Christmas Tree this Christmas. This cube has 64 Blue LEDs organized in 4 layers. These LEDs are wired up to an Arduino Nano. Each LED can be addressed individually using Arduino IDE, enabling it to display amazing 3D transitions! There are hundreds of tutorials of these cubes made using exposed metal wires and by using crazy soldering techniques, which just gives me shivers. In this tutorial I'll show you guys how to make this super simple 4x4x4 PCB LED cube "without over complicating anything". With just basic soldering skills, you can create this PCB cube and light up your living room making everyone jealous.

[arduino-diy]

ESP Terminal with 3.5" SPI Capacitive Touch Display

Product Info: https://www.elecrow.com/wiki/esp-terminal-with-35inch-spi-capacitive-touch-display.html Elecrow sent me this cute little 320x480 ESP32-S3 based SPI capacitive touch display with OV2640 camera. I am going to use this screen to create a touch panel for my home automation system. In this video, I am going to unbox and show you guys how to program and use this cute little touchscreen from Elecrow using SqareLine Studio. You can order this touch screen display from www.elecrow.com. The product link is in the description below.

[arduino-diy]

Destiny Internet Ghost - Internet NotifierThe Internet has changed the way we live our lives. From communication, education, banking, entertainment and shopping, the Internet has had a profound impact on our world.Gone are the days when the pen was the most important tool in this world. times have changed and now the internet rules the world.It is very difficult to imagine our world without the Internet.In the year 2021 I created a "Internet Hardware WatchDog" using NodeMCU which reboots my home router whenever there is an issue with the Internet. This device sits next to my router and happily takes care of it whenever it has a hiccup.This year, I wanted to extend the watchdogs horizon by adding an "Internet Status Notifier" that displays the current status of the Internet using an RGB LED.When the Internet is up and running, the notifier displays a blue light and when the Internet is down it goes red. Video:  https://youtu.be/mWDEx0khpWM

[arduino-diy]

Liquid Level Indicator Using ULN2003

A water level indicator detects and indicates the level of water in an overhead tank and relays the information back to a control panel to indicate whether the tank has a high or low water level. In this tutorial, I am going to use the ULN2003 IC to create a simple, inexpensive water level indicator. Using this circuit you can easily control the wastage of water and electricity. Watch this video, for detailed step by step instructions on how to build this circuit and to know how this circuit works. Towards the end of the video I will also discuss whether its really worth building this circuit.

[arduino-diy]

All About IC UNL2003

The UNL2003 IC contains 7 High Voltage, High Current NPN Darlington Transistor Arrays each rated at 50V, 500mA in a 16-pin DIP package. You can connect the IC directly to a digital logic (like Arduino or Raspberry Pi, TTL or 5V CMOS device) without an external dropping resistor. This IC features "common-cathode flyback diodes" for switching inductive loads. The ULN2003 is known for its high current and high voltage capacity.

The Darlington pairs can be "paralleled" for higher current Output. The inputs are capable with TTL and 5v CMOS logic.

Now, let's deep-dive and check out the internals of the ULN2003 IC and how it can be used in our projects.

[arduino-diy]

NodeMCU Based: 3D Printed Indoor Gauge Thermometer

Had some time this weekend and a desire to create something new and interesting, so went ahead and created an Arduino/NodeMCU based indoor dial thermometer. This device displays the temperature in degree centigrade on a D-Shaped Gauge as well as on a 7-Segment display.

In addition to that, it also saves the temperature and humidity readings in a MySQL DataBase hosted on a home based Raspberry Pi Server. The data is then displayed using the "Our Smart Home" app.

[arduino-diy]

3D Printed Rechargeable Gothic Lantern

A Gothic Lantern is a captivating piece of lighting that brings the allure of the Victorian Era into your home. The lantern is adorned with ornate top and bottom ornaments, reminiscent of the Gothic style that was prevalent during the Victorian Era. My curiosity to create something new and interesting got me into this gothic style rechargeable lantern. The design is both nostalgic and timeless, making the Gothic Lantern a perfect fit for homes that cherish a touch of historical charm.

Read this tutorial for detailed step by step instructions on how to build this lantern and for a complete instruction on how the electronic circuit works inside the lantern.

[arduino-diy]

555 Adjustable Delay On Off Timer Circuit

The 555 timer IC is an integrated circuit (IC) that is used in a variety of timer, delay, pulse generator and oscillator circuits. In this tutorial, I am going to show you guys how to make an "Adjustable Delay Timer Circuit" using the 555 timer IC. This circuit can automatically turn on/off any circuit after a fixed duration. This timer circuit is useful when you need to power On/Off any AC Appliances after a pre-defined duration. For example, you can use this circuit to automatically turn off a mobile charger after a certain period of time to avoid over charging, or you can turn on/off a light bulb after a certain period.

The time delay of this circuit can be adjusted by using various combinations of resistors and capacitors. Watch this video for detailed step by step instructions on how to build this circuit and to know how this circuit works.

[arduino-diy]

3D Printed Arduino Halloween Décor

When the full moon is shining and the wolves are howling, it's time for Halloween's spooky spectacle. The snickering grins of jack-o'-lanterns glow from lit porches. Kids skip down the block in spooky costumes, carrying bags full of candy and shouting "Trick or Treat!". The Nightmare Before Christmas is almost here... Do you see dead people???

Alright Enough of that, in this Spooktacular video I am going to create an Arduino based 3D printed Halloween Décor. It's super easy, fun and spooky....

[arduino-diy]

Proximity sensing is a very common application in electronics. There are several ways to accomplish this. The most common way is by using a PIR sensor. PIR Sensor senses the change in ambient infrared radiation caused by warm bodies. I have already covered this in my Tutorial No. 5: "PIR Sensor Tutorial - With or Without Arduino". However, since PIR sensors detect movement from living objects, they can generate false alarms. These sensors are also inefficient in hot environments, as they rely on heat signatures.

The other common methods of proximity sensing involve, using reflected ultrasonic or light beams. Using these sensors, the intruding object is detected by the reflected beam back to its source. The time delay between transmission and reception is measured to calculate the distance to the object. In this tutorial, we are going to look at another method of proximity sensing using "Microwaves" and "Doppler Effect".  In my hand is an inexpensive RCWL-0516 Microwave Radar Motion Sensor. The RCWL-0516 microwave sensor detects "any movement" from "any object" and does not rely on heat, making it more reliable in hot environments. I am going to use this sensor to create a Geo-fence around my house to detect motion and get notifications.

[arduino-diy]

Transformers PCB BADGE

It's been a while, the Autobots have appeared on the silver screen. Finally they are returning to the big screen in their upcoming Transformers movie "Rise of the Beasts".

This inspired me in making a PCB Badge to complement my enthusiasm and love towards the Autobots.

In this tutorial, I am going to show you guys how to design this "Transformers PCB Badge" and how to solder the components to it.

[arduino-diy]

LED Fader Using 555 Timer IC

Wanted to generate a LED fading effect (fade-in and fade-out) for my upcoming video tutorial using the 555 timer IC.I already have a video where I used LM358 Dual Operational Amplifier IC and another one with Arduino to generate the LED fading effect. YouTube, is full of video showing how to generate the fading effect using 555 timer IC. However, none of them produce a true fading effect. Some just fades-in but never fades-out. And there is literally no explanation of how they are generating the fading effect other than just showing how to assemble the components. In this tutorial, I am going to show you guys how to create a true LED fading effect using the 555 timer IC. I will also explain how the circuit works and how changing components change the fading effect of the LEDs.

[arduino-diy]

Arduino Based Concrete Clock With Touchless Night Lamp --------------------------------------------------- When you mix creativity with electronics, it becomes a masterpiece. Producing something original and worthwhile leads to the creation of a number of great new useful household products. In this tutorial, I am going to show you guys how to create this Arduino based touchless concrete clock.

[arduino-diy]

Unboxing and Assembling Crowbot Bolt Smart Robot Car

Hi everyone, today I am going to unbox and assemble the Crowbot Bolt an open source programmable Smart Robot Car. CrowBot BOLT is an open source smart programming car powered by ESP32 chip. It has a wealth of sensors (such as a light sensor, ultrasonic sensor, and line Tracking Sensor), comes with Wifi and Bluetooth functions, and can meet a variety of programming environments like Letscode, Micropython, and Arduino. It can quickly realize functions such as light tracking, line tracking, obstacle avoidance, remote control, and light show. As an entry-level STEAM educational robot, the cool and cute BOLT makes robot programming learning and teaching easy and fun.

Order Crowbot Bolt from here: https://www.elecrow.com/crowbot-bolt-programmable-smart-robot-car-steam-robot-kit.html?idd=3

[arduino-diy]

DIY - PCB Christmas Forest -------------------- Created a small "PCB Christmas Forest" which is going to light up my study table this Christmas. In this video, I am going to show you guys how to design these PCBs and assemble them to create a small PCB Christmas Forest.

[arduino-diy]

How to use the TM1637 Digit Display with Arduino ------------------------------------------------ In my hand is a 4-Digit 7-Segment display module. The heart of this module is an inexpensive Serial LED Driver from Titan Micro Electronics called the TM1637.

In this tutorial, I am going to show you guys how to control the TM1637 4-Digit 7-Segment displays using an Arduino. If you want to displays sensor data, temperature and humidity, or want to design a clock, timer or counter, you will need this 4-Digit Seven-Segment Display.

Video: Video Link https://youtu.be/Ob9mrq_Lj9k