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What Are the Advantages of EPP32 Over Arduino UNO?

The ESP32 is a cheap Wi-Fi module (and also ESP32 used to indicate board) which perfectly suited for DIY projects in the Internet of Things (IoT). When we are using ESP32 based boards with Arduino IDE (like, in our setup of Arduino UNO IDE guide) then the ESP32 is becoming "Arduino compatible" board. It is not what is supported by official Arduino by any means. The Arduino UNO uses a 8-bit … [Read more...]

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ESP32 Arduino OLED Display Example (I2C)

In our previous guide on ESP32 Arduino With LCD, we used an I²C module. OLED displays with I²C are sold as one unit. These days, they does not cost huge. In our earlier guides we have explained about different protocols, interfaces like I²C, Serial Peripheral Interface. Another relevant tutorial is breadboard power supply module). We are using a 0.96 inch SSD1306 OLED display (blue/white) … [Read more...]

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ESP32 Arduino Wi-Fi Access Point with Wi-Fi Connection (Station)

It is possible to setup ESP32's Wi-Fi to access point and station. ESP32 can connect to another hotspot and share the connection. An access point (AP) is a networking hardware device which allows other Wi-Fi devices to connect to a network. Some basic theory required to know for making basic code better. An AP is different from a hotspot. Hotspot is the physical location (and the device) … [Read more...]

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ESP32 Arduino IBM Watson IoT Pulse Sensor Amped

In our previous two guides, we discussed how to create graph on IBM Watson IoT Dashboard, also provided code for DH11 sensor and in last guide how to use Pulse Monitor amped with ESP32 was shown with minimal theory. Here is Simple ESP32 Arduino IBM Watson IoT Pulse Sensor With Easy Coding and Default Graphing Widgets of IBM Watson IoT. It is important to realize that I am using a cheap China pulse … [Read more...]

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ESP32 Arduino Pulse Sensor Amped

A PulseSensor library with popular sensor manufactured by PulseSensor.com (or it's cheaper China clone) exists for Arduino that can detect pulse. Optical heart rate sensors use a methodology called photoplethysmography (PPG) to measure heart rate. A photoplethysmogram (PPG) can detect blood volume changes in the microvascular bed of tissue. A photoplethysmography is obtained by using a pulse … [Read more...]

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What Are the Steps to Get Prototype PCB Manufactured

These days, CAD files of the Open Source projects often distributed. In these situations, we can not use DIY methods of single layer PCB fabrication at home or some other ways like using Flex boards. For this process, we need to follow procedure to save cost yet get the best result. The procedure will demand to learn lot of new things and with time, a skilled can have excellent quality … [Read more...]

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Over-the-Air Programming (OTA) and Arduino

Over-the-Air Programming (OTA) includes different methods of software, settings distribution and not limited to development board but includes the consumer devices such as smartphones, set-top boxes. With Over-the-Air Programming (OTA), from one central console we can send an update to all the devices. Related terminologies are over-the-air service provisioning (OTASP), over-the-air provisioning … [Read more...]

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CircuitPython vs C/C++ vs Lua for the Microcontrollers

While programming languages can not be compared, specially when they are diverse in basic nature like Python vs C/C++ or Lua with them yet the question of comparison arises. Investing time behind anything should have a goal. While MicroPython, CircuitPython variations of Python has been discussed on this website and the problems of Arduino "langugage" discussed, place of C/C++ in the world of … [Read more...]

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What is FPGA (Field-Programmable Gate Array)?

In recent time, prototyping boards with onboard FPGA becoming common, such as Arduino MKR Vidor 4000. Once FPGA was practically used by the engineers. Even if our readers have limited technical knowledge, our older theoritical articles which FPGA will need to know already present on this website. FPGA as single chip gives us the access to the hardware design with the advantages of multi-threading, … [Read more...]

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Hirose U.FL Connector and Antenna for Wi-Fi (Pi Zero, ESP32)

Hirose U.FL connector and antenna required for Wi-Fi in some models of Pi Zero, ESP32. U.FL/IPX connector commonly used on PCB of everyday electronics. U.FL/IPX to SMA adapters sold in the market. Often, the name of the unit not known to many of the makers. Hirose Electric Company Limited is a Japanese electronics company specializing in the manufacturing of electric connectors, flexible … [Read more...]

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ESP32 Arduino Built-in Hall Sensor Code & Theory

ESP32 has a Hall Effect Sensor near pin 22, just below and middle of the inscription "ESP32-WROOM-32", inside the metal cover. Hall effect sensors measure the magnitude of a magnetic field as output voltage. Hall effect sensors are used for proximity sensing, positioning, speed detection, and current sensing applications. Hall sensor when combined with threshold detectors act as a switch. That is … [Read more...]