Elettronica »

JQ6500, “flashdata error”

JQ6500, “flashdata error”

luca April 13, 2018 0

After having published my previous posts about the JQ6500 module, some readers wrote me about an error the MusicDownload.exe application shows when they click on the upload button to store the mp3 files in

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JQ6500 module recovery

JQ6500 module recovery

luca April 11, 2018 2

In a previous post I presented the JQ6500 audio module. When you connect it to your computer, it’s detected as a CDROM drive. I brought some modules from different webstores. A couple of them

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First look at JQ6500 modules

First look at JQ6500 modules

luca April 9, 2018 4

For some time, on different chinese webstores (for example Banggood) there is a module called JQ6500 for sale: it’s often described as a voice sound module or as an MP3 player sound module. Actually JQ6500 is the name

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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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Arduino bootloader and ISP

Arduino bootloader and ISP

luca March 23, 2018 0

After having developed a sketch using the Arduino IDE, you can compile and load it on the Arduino board connected to your PC with just a click on the upload button: The program is

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WGX iBeacons

WGX iBeacons

luca March 19, 2018 0

In a recent tutorial I explained how to detect the presence of an iBeacon with the esp32 chip. The iBeacon used to demonstrate the program is manufactured by a chinese Company, Wellcore, and sold by Banggood. The transmitter

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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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