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You are here: Home » ESP32

By Abhishek Ghosh May 16, 2020 10:08 pm Updated on May 16, 2020

ESP32 vs Arduino : How ESP32 is Different from Arduino

ESP32 is a low cost, low power consuming System on Chip (SoC) with integrated Wi-Fi and Bluetooth compatible with Arduino IDE. In other words, an ESP32 board can be used as "Arduino" following some guide like we have published one in the past. ESP32 is developed by Espressif Systems and has a Tensilica Xtensa LX6 microprocessor. By the phrase "Arduino", we mean the boards which are designed and … [Read more...]

By Abhishek Ghosh May 3, 2020 6:59 pm Updated on July 20, 2020

ESP32 Arduino Smartwatch Detector with Buzzer

The series of article Samsung Smartwatch as Proximity Switch taught our readers to learn all required the basic to make ESP32 to respond to a specific smartwatch's BLE. The same basic was used for the IoT project Detect Smartwatch With ESP32 on IBM Watson IoT Widget. But, still today in everyday life we depend on sound clues more than the visual clues. A door bell or a smoke detector are some … [Read more...]

By Abhishek Ghosh April 17, 2020 11:03 pm Updated on April 17, 2020

Detect Smartwatch With ESP32 on IBM Watson IoT Widget

In our previous guide, we have shown that we can trigger ESP32 (with Arduino IDE) to send message to IBM Watson IoT in Presence of a Particular Samsung Galaxy Smartwatch. That process involves BLE and WiFi. In our one series of articles on Samsung Smartwatch as Proximity Switch, we triggered a local event, such as control of a LED. In our other series of articles, we used the IBM Watson IoT … [Read more...]

By Abhishek Ghosh March 24, 2020 4:52 pm Updated on March 24, 2020

ESP32 Audio Output

The ESP32 has a built-in 8-bit DAC. Digital to the analogue signal converter or analogue-digital converter or DAC is a device to convert digital signals with binary data into current or analogue voltage signals. For better sound quality, we can use an external I2S codec and amp. Adafruit I2S amp uses a MAX98357A IC. The MAX98357 is a low-cost, digital pulse-code modulation (PCM) input amplifier. … [Read more...]

By Abhishek Ghosh March 18, 2020 7:26 am Updated on March 18, 2020

Note on Calculating Distance From RSSI Value of BLE Devices

A quick question from one reader after publication of Smartwatch BLE to Trigger IBM Watson IoT Event was "can I measure the distance in meters and broadcast?". The answer is - it is not reliable with easy formula against a single BLE device. If we were using Raspberry Pi, then we could think of using complex coding. BLE technology and works with Indoor Location Positioning is not new. RSSI … [Read more...]

By Abhishek Ghosh March 17, 2020 6:14 pm Updated on March 17, 2020

Detect Samsung Smartwatch BLE and Trigger IBM Watson IoT Event

We can trigger ESP32 to send message to IBM Watson IoT in Presence of a Particular Samsung Galaxy Smartwatch. This involves BLE and WiFi. In our one series of articles on Samsung Smartwatch as Proximity Switch, we triggered a local event, such as control of a relay. In our other series of articles, we sent message to IBM Watson IoT with upon pressing a button (this guide and this guide). Now, … [Read more...]

By Abhishek Ghosh March 12, 2020 8:30 pm Updated on March 12, 2020

Solve ESP32 Sketch Too Big Error on Arduino IDE

Sketch too big is a common issue faced inside Arduino IDE while working with BLE. Most of us set up the Arduino IDE for ESP32 and forget to alter any other settings of the IDE because except some situations, we never face this problem. The error will suggest you navigate to this official webpage of Arduino (which is not exactly related to ESP32), which will tell you … [Read more...]

By Abhishek Ghosh March 10, 2020 6:14 pm Updated on March 10, 2020

Samsung Smartwatch as Proximity Switch : Part V [END]

This is the final part of the series. In Part I, we talked about the basics which continued to Part II. Part III had a working code non-specific to any particular device. Part IV had a partially working code specific to a particular device. circuitdigest.com's code (in Part IV) was not working with Samsung Galaxy Watch LTE. Samsung's smartwatches shutdown both BLE and traditional … [Read more...]

By Abhishek Ghosh March 9, 2020 6:10 pm Updated on March 9, 2020

ESP32 BLE Server with Android App

BLE only works when one communication is active and stays ON. Else it remains in sleep mode. Beacons are great usage of BLE. In our series of articles on Samsung Smartwatch as Proximity Switch, we have used the ESP32 as client. In this article, we are talking about using ESP32 BLE as a server. In our series of articles on Samsung Smartwatch as Proximity Switch, we discussed GATT Service and BLE … [Read more...]

By Abhishek Ghosh February 23, 2020 6:28 pm Updated on May 3, 2020

Samsung Smartwatch as Proximity Switch : Part IV

In the previous part of this topic (here is part III), we provided a sample code to create a basic BLE scanner. The code makes the ESP32's on-board LED to turn on whenever the watch comes in proximity. In our earlier parts of this series, we talked about filtering the MAC address and practical matters around Samsung Galaxy Watch. I found that the website circuitdigest.com worked with a similar … [Read more...]

By Abhishek Ghosh February 20, 2020 9:56 am Updated on March 9, 2020

Samsung Smartwatch as Proximity Switch : Part III

Instead of publishing a single article on a complex matter, we split into parts. This methodology makes the thing boring to the initial readers but in the long term, the readers can browse our website and fix themselves. In the previous two parts of this topic (here is part I and here is part II), we created the base with theory and practical so that even an unused reader does not get confused or … [Read more...]

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Cite this article as: Abhishek Ghosh, "," in The Customize Windows, , July 5, 2022, .

Source:The Customize Windows, JiMA.in

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