MCUs (Microcontrollers) and DSPs (Digital Signal Processors) are commonly used hardware components in edge AI devices. This article provides a brief analysis of the characteristics of these two types of devices, in conjunction with the book “AI at the Edge“. A microcontroller is a small, inexpensive computer that is involved in the manufacturing of almost … Read more
1.Invisible Eavesdropping Within 10 Meters: Real Scenarios of Bluetooth Headset Vulnerabilities A user regularly uses a well-known brand of true wireless Bluetooth headset (equipped with the Airoha chipset) for commuting to listen to music and making calls, unaware that the device has a critical security vulnerability. An attacker exploited the systemic security flaw in the … Read more
Recently, I discovered another great tool. Last time, I transformed my old temperature and humidity meter into a connected device, and it was done using ESPEasy. To be honest, I initially thought this might be quite complicated, but once I got started, I realized it was tailor-made for DIY enthusiasts like us. What exactly is … Read more
A Quick Start Guide to ESP32 Development: Bridging Cloud AI to the Physical World Introduction Forgive me for starting a new project again; I will gradually update the previous ones, but I simply cannot contain my excitement to share this new toy with everyone. Without further ado, let’s get straight to the point. Learning ESP32 … Read more
ESP32 as a Web Crawler Server I have seen people online suggesting using the ESP32 as a web crawler server, so I decided to give it a try. Since I am not an expert in microcontrollers, I am not sure if the issue was with my board or my settings. However, my conclusion is that … Read more
ESP32-BLE2MQTT is a bidirectional BLE↔MQTT bridge running on ESP32. It directly maps the GATT characteristics of Bluetooth Low Energy (BLE) devices to MQTT topics, allowing Bluetooth sensor data to be pushed to an MQTT server and enabling remote control of Bluetooth devices via MQTT→BLE. In other words, Bluetooth devices that could only interact through a … Read more
What is ESP32-BLE2MQTT? In simple terms, it is a small ESP32 (the commonly known Wi-Fi + Bluetooth dual-mode chip) running firmware specifically designed to map BLE GATT characteristics to MQTT topics. • As long as your BLE device broadcasts data such as battery level, power, and temperature, BLE2MQTT can help you push this data directly … Read more
To prepare the application materials for Bluetooth BQB certification, it is necessary to start from the aspects of the company and account, product technology, and testing, as detailed below: Company and Account Information Bluetooth SIG Membership Qualification Proof: The applicant must first become a SIG member, such as at the Adopter level, with an annual … Read more
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Jacob Beningo is the founder of Beningo Embedded. Beningo’s website: www.beningo.com Whether you love or hate open-source software, there are many lessons to be learned from writing modern firmware. For example, we can learn how to write portable and configurable code or create better documentation. In today’s article, we will explore some lessons learned from … Read more