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Seeed Studio XIAO Series are diminutive development boards, sharing a similar hardware structure, where the size is literally thumb-sized. The code name "XIAO" here represents its half feature "Tiny", and the other half will be "Puissant".Seeed Studio XIAO ESP32S3 Sense integrates camera sensor, digital microphone and SD card supporting. Combining embedded ML computing power and photography capability, this development board can be your great tool to get started with intelligent voice and vision AI.
5V - This is 5v out from the USB port. You can also use this as a voltage input but you must have some sort of diode (schottky, signal, power) between your external power source and this pin with anode to battery, cathode to 5V pin.
At each startup or reset, a chip requires some initial configuration parameters, such as in which boot mode to load the chip, voltage of flash memory, etc. These parameters are passed over via the strapping pins. After reset, the strapping pins operate as regular IO pins.
To change the bit values, the strapping pins should be connected to external pull-down/pull-up resistances. If the ESP32-S3 is used as a device by a host MCU, the strapping pin voltage levels can also be controlled by the hostMCU.
All strapping pins have latches. At system reset, the latches sample the bit values of their respective strapping pins and store them until the chip is powered down or shut down. The states of latches cannot be changed in any other way. It makes the strapping pin values available during the entire chip operation, and the pins are freed up to be used as regular IO pins after reset.
The XIAO ESP32S3 Sense is shipped with the WebCam sample program pre-installed. You can use this program by giving the XIAO a good antenna installation and powering it up. For details, you can read the Wiki about this program.
XIAO ESP32S3 is shipped without pin headers by default, you need to prepare your own pin headers and solder it to the corresponding pins of XIAO so that you can connect to the expansion board or sensor.
Due to the miniature size of XIAO ESP32S3, please be careful when soldering headers, do not stick different pins together, and do not stick solder to the shield or other components. Otherwise, it may cause XIAO to short circuit or not work properly, and the consequences caused by this will be borne by the user.
On the bottom left of the front of XIAO ESP32S3, there is a separate "WiFi/BT Antenna Connector". In order to get better WiFi/Bluetooth signal, you need to take out the antenna inside the package and install it on the connector.
There is a little trick to the installation of the antenna, if you press down hard on it directly, you will find it very difficult to press and your fingers will hurt! The correct way to install the antenna is to put one side of the antenna connector into the connector block first, then press down a little on the other side, and the antenna will be installed.
If you are shopping for the XIAO ESP32S3 Sense, then you should also include an expansion board. This expansion board has a 1600*1200 OV2640 camera sensor, Onboard SD Card Slot and digital microphone.
Installing the expansion board is very simple, you just need to align the connector on the expansion board with the B2B connector on the XIAO ESP32S3, press it hard and hear a "click", the installation is complete.
By now, I believe you have a good understanding of the features and hardware of the XIAO ESP32S3. Next, let's take the simplest Blink program as an example and perform the first blink for your XIAO ESP32S3!
If you want to connect the battery for XIAO, we recommend you to purchase qualified rechargeable 3.7V lithium battery. When soldering the battery, please be careful to distinguish between the positive and negative terminals. The negative terminal of the power supply should be the side closest to the USB port, and the positive terminal of the power supply is the side away from the USB port.
Since all GPIO pins of the XIAO ESP32S3 are assigned their own functions, we do not have a GPIO configured for the battery pin. this means that we cannot get the battery voltage at the software level by reading the analog value of one of the GPIOs. If necessary, you can consider connecting the positive and negative terminals of the battery to two of the pins to measure the battery voltage.
ESP32 offers a deep sleep mode for effective power saving as power is an important factor for IoT applications. In this mode CPUs, most of the RAM, and all the digital peripherals which are clocked from APB_CLK are powered off. The only parts of the chip which can still be powered on are: RTC controller, RTC peripherals ,and RTC memories.
At this point, all you need to do is copy this BIN file to the xiaos3-bin2uf2 directory that you just extracted in the first step, and then execute the convert_uf2.bat script to generate a UF2 file directly.
Then please connect the XIAO to the computer and then run the boot_uf2.bat script again, the XIAO will appear in the computer as a USB stick, which means it has successfully entered the UF2 BootLoader mode.
Next you can access the XIAO ESP32S3's USB stick and copy the converted UF2 to the USB stick. Once the copying is complete, the XIAO USB stick will automatically disappear and the program will start to execute.
Once you have performed the above steps and you still want the XIAO ESP32S3 to access the UF2 BootLoader to upload other UF2 files, you need to quickly press the Reset button first and then the Boot button afterwards. And there is no need to execute the boot_uf2.bat script again.
The project is composed of customizing the 2nd stage bootloader from IDF and UF2 factory application as 3rd stage bootloader. Note: since IDF is actively developed and change very often, it is included as submodule at lib/esp-idf, please run export script there to have your environment setup correctly.
If you encounter the above problem, it is recommended that you first try pressing the reset button on the XIAO ESP32S3 to try to get the program running again. If the problem persists, please recheck your program and read the methods provided in BootLoader Mode to restore the device.
XIAO ESP32S3 is the most complex one in all XIAO because of its high integration, and the PCB needs to be put together in factory production. Due to the high level of integration, the splicing board connection can only be placed at the four rounded corners, which will lead to the problem of uneven rounded corners on the picture. We will try to improve the process to ensure that this problem will be solved in the subsequent production.
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During the opening keynote of the Microsoft Ignite event, on November 15th, Artificial Intelligence was the undiscussed protagonist. Among the many AI-related announcements, a common flavor has emerged: the idea of making AI and, above all, GenAI more and more consumable and customizable by individuals and organizations.
Azure AI Studio can be seen as your enterprise AI hub, an open ecosystem that brings together AI models (including powerful LLMs like the GPT-4 as well as models in other domains such as vision and speech), AI-powered application components (such as prompts, vector indexes, data...), AI evaluation metrics (both built-in and custom) and responsible AI components (content filtering). The idea is that of allowing AI-as-a-service, so that everyone can leverage the best of breed of AI offering in the market within a powerful platform that makes it easier to build AI applications.
To get started with Azure AI Studio, you can start exploring its model catalog to pick the one you need for your application. You can also produce a quick benchmarking dashboard between two or more models, to better understand their performance in given domains.
You can then leverage the built-in content safety filter and adapt it to your scenario. For example, you can decide to make it more strict toward specific categories of harmful content as I did in the following demo:
Finally, you can also navigate a library of pre-built metapromts you can leverage to tailor your LLMs for vertical scenarios. You can also enrich this library so that your organization can benefit from it.
As mentioned above, Azure AI Studio is meant to be your AI Hub and, as such, it needs to be easily integrated with external components and services such as Azure OpenAI Instances, Azure AI Search, and similar. To do so, you can create connections and manage them in the Manage tab, which also allows you to have governance over your AI components (compute instances, permissions, billing etc.).
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