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ESP32 (35) – BLE, scan response

ESP32 (35) – BLE, scan response

luca April 3, 2018 2

In the previous posts I explained how to receive and send advertising packets based on the Bluetooth LE standard. The payload (that is the amount of “useful” data) of those packets is at most

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ESP32 (34) – BLE, raw advertising

ESP32 (34) – BLE, raw advertising

luca March 29, 2018 0

In the previous post, you learned how to send BLE advertising packets with the esp32 chip. To define the content of the packet, you used a struct, of the esp_ble_adv_data_t type: The struct’s definition is included

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ESP32 (33) – BLE, advertising

ESP32 (33) – BLE, advertising

luca March 26, 2018 0

In the previous posts you learned how to use the esp32 chip to receive and parse the advertising packets transmitted by BLE peripherals. As a practical example, I developed a program to detect the presence of

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ESP32 (32) – BLE, iBeacon

ESP32 (32) – BLE, iBeacon

luca March 5, 2018 8

In my previous article I explained the Bluetooth Low Energy technology and the advertising process. You learned that a BLE device can leverage the advertising packets to send data; in this case the device is called broadcaster and the devices which

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ESP32 (31) – BLE, GAP

ESP32 (31) – BLE, GAP

luca February 9, 2018 2

In my previous tutorials you learned how to use the wifi interface of the esp32 chip. Starting from this post, I’m going to explain you the second wireless technology the esp32 chip supports: bluetooth. In particular,

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ESP32 (30) – HTTP server in SoftAP mode

ESP32 (30) – HTTP server in SoftAP mode

luca January 29, 2018 5

One of the most frequent questions I receive from my website’s contact form or from my Facebook page is whether it’s possible to publish an HTTP server when the esp32 chip is working in SoftAP mode, that is

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ESP32 (29) – Deep sleep

ESP32 (29) – Deep sleep

luca January 22, 2018 6

One of the major concerns for embedded devices is the power consumption. If the device you’re designing will be battery powered, it’s indeed important to reduce as much as possible its power consumption  to maximize the

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ESP32lights

ESP32lights

luca January 8, 2018 20

Today’s project, ESP32lights, is a smart device based on the esp32 chip. Thanks to ESP32lights you can turn a load on and off (I used it for my christmas lights) ESP32lights connects to your

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ESP32 (28) – MQTT and SSL

ESP32 (28) – MQTT and SSL

luca December 4, 2017 9

Security is a very important aspect for MQTT brokers. In a previous article you’ve already learned how to implement authentication and authorization. The weakness in that configuration was that credentials were transmitted in cleartext; it was therefore

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4zerobox, industrial module by italian startup with ESP32 heart

4zerobox, industrial module by italian startup with ESP32 heart

luca November 20, 2017 0

With great pleasure, I want to introduce you today the project of an Italian startup: 4zerobox. 4zerobox is a module, DIN-rail mountable (9 modules), designed to complement or replace a classic PLC in industrial automation applications.

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