EL wire is wire which glows without LED. We can control EL Wire through an Arduino or ESP32. These are thin copper wire coated in a phosphor which produces light when AC is applied to it. AC does not mean home supply AC - battery with inverter enough for them. They can be used in a wide variety of projects much as custom neon lights were often used. The thin diameter EL wires make them flexible … [Read more...]
ESP32 Relay Control : Shift 3.3V Signal to 5V Signal
In our guide on Controlling AC Powered Appliances With ESP32 and IBM Watson IoT we pointed that the relay connected with ESP32 may not properly function. There are many ways to shift the 3.3V signal to 5V signal. A level shifter or logic-level shifter is a circuit used to translate signals from one logic level or voltage to another. The logic-level shifter can be uni-directional, … [Read more...]
ESP32 Arduino Glass Touch Button : Cheap DIY Method
Earlier, we published a theoretical article named How to Build ESP32 Arduino Glass Touch Switch With LED. Here is How to Develop Your Own ESP32 Arduino Glass Touch Button in Cheap DIY Way and Calibrate it to the Best Result. Minimal resources needed for this project. In future, we will improve this thing with backlit LED. The above-linked article will give you a link to Espressif GitHub … [Read more...]
Alexa with ESP32 Arduino and Watson IoT Platform : Fundamentals
In our one earlier discussion, we delivered the concept of how we can Build ESP32 Arduino Glass Touch Switch With LED. Higher models of the glass touch switchboards also have Alexa voice control support. In this fundamental discussion, we will talk on how to combine Alexa with ESP32 Arduino and Watson IoT platform. We can use Amazon Echo Dot or just Android Smartphone with Alexa app as a verbal … [Read more...]
How to Build ESP32 Arduino Glass Touch Switch With LED
These days, glass touch panels are becoming common even for the household switchboards. China worldwide selling units which have touch switch, a remote control, sometimes Wi-Fi with a mobile application for IoT control. Here is how to build ESP32 Arduino glass touch switch with LED. Glass touch panels are electric shockproof and cost of manufacturing total units including relay, SoC (like ESP32) … [Read more...]
What to Know to Buy a NFC USB Dongle For Android, PC, Mac
Near-field communication (NFC) is a set of protocols which enables two devices to establish communication by bringing them closer to each other. Most commonly known NFC devices are used in contactless payment systems on credit and debit cards (sometimes referred to as contactless cards). Apart from that usage, NFC can be used for sharing contacts, photos, videos or files exactly like Bluetooth but … [Read more...]
Tips For Building Digital Switch With ESP32 Arduino
There are some design considerations to increase safety while building an ESP32 Arduino based physical switch controlled by IoT project. In our earlier guide (Controlling AC Powered Appliances With ESP32 and IBM Watson IoT), we have shown the basic of how to use a pushbutton and IoT control together. The case will be using both the pushbutton and IoT control independent. Our that guide is a … [Read more...]
Required Circuit For Bare Minimum ESP32 Module
When you need many ESP32 for projects then you'll save money by avoiding full development board. Import tax is quite higher in many countries, yet the bare ESP32 module cost only $3. Bare minimum ESP32 module is more than System on Chip. ESP32 module, unfortunately, does not have built-in USB–TTL/ UART hardware. That costs $1.5 per piece and you do not need to connect USB–TTL/ UART hardware … [Read more...]
Develop WEB Applications with ESP32 and IBM Watson IoT
Here is How to Develop Web Applications with ESP32 and IBM Watson IoT. Often, using an HTML page with JavaScript is practical than developing an Android App. Because, web applications can be hosted on own cloud server or cloud storage service - thus it becomes device independent. Securing access to such web application usually, need minimal configuration for the Apache2 server. Cloud storages … [Read more...]
Cheap ESP32-CAM Setup With Arduino IDE
Here are Minor Details of Cheap ESP32-CAM Setup With Arduino IDE. In an earlier guide, we described the steps to setup the normal variants of ESP WROOM 32 with Arduino IDE on Windows PC. The software setup part is essentially the same for these cheap ESP32-CAMs too but there is more hardware to buy with it. This board has an OV2640 camera and a microSD card slot. Obviously, OV2640 camera … [Read more...]
Controlling AC Powered Appliances With ESP32 and IBM Watson IoT
It is an upgrade to our previous article to control ESP32 Arduino LED from IBM Watson IoT. We already talked about Android Apps for Watson IoT for this purpose. We already have an article to use relay with Arduino. Our linked relay guide should be enough for anyone to understand how to use relay and AC connections. These relay modules will create mechanical clicking sound like switch. My relay … [Read more...]