Xiao Esp32 S3
Maribeth Seagers
With regard to the features highlighted above, XIAO ESP32C3 is positioned as a high-performance, low-power, cost-effective IoT mini development board, suitable for low-power IoT applications and wireless wearable applications.
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.
According to the chip manual of ESP32C3, GPIO2, GPIO8 and GPIO9 in the chip are Strapping Pins, the high and low level configurations of these pins may allow the chip to enter into different Boot modes, please pay attention to this point when you use these pins, otherwise it may prevent your XIAO from uploading or executing the program all the time.
First, we are going to connect XIAO ESP32C3 to the computer, connect an LED to the board and upload a simple code from Arduino IDE to check whether the board is functioning well by blinking the connected LED.
The XIAO ESP32C3 will not have any LED on when it is battery powered (unless you have written a specific program), please do not judge whether the XIAO ESP32C3 is working or not by the condition of the LED, please judge it reasonably by your program.
Sorry, we currently have no way to help you check the remaining battery level through software (because there are no more chip pins available), you need to charge the battery regularly or use a multimeter to check the battery level.
Due to the limitation of the number of pins in the ESP32C3, engineers had no extra pins to allocate to the battery for voltage measurement in order to ensure that the XIAO ESP32C3 has the same number of GPIOs as the other XIAO series available.
But if you prefer to use a separate pin for battery voltage measurement, you can refer to the genius operation of msfujino. We would also like to give a special thanks to msfujino for all the experience and efforts shared for the XIAO ESP32C3.
Fortunately, the calibrated correction value for each chip is written in the fuse area, and by using the function alalogReadMilliVolts(), I can read the corrected voltage value without doing anything special.
The above is from Seeed Studio forum user msfujino, originally posted at: -voltage-monitor-and-ad-conversion-for-xiao-esp32c/267535.We recommend that you have good hands-on skills and better soldering skills before attempting to measure battery voltage based on the above, and be cautious of dangerous actions such as shorting out batteries.
You can first try to reset the board by clicking the RESET BUTTON once while the board is connected to your PC. If that does not work, hold the BOOT BUTTON, connect the board to your PC while holding the BOOT button, and then release it to enter bootloader mode.
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Hi, to install the battery for the XIAO ESP32, it is only necessary to solder the positive and negative terminals of the battery correctly to the battery connection pads shown in the picture, nothing additional configuration is needed.
I have connected a battery (1S1P, 1200mAh, 25C) to an Xiao esp32c3, and in runs fine, whether connected to usb or not. My circuit includes a couple of leds, drawing enough current to run the battery from 4.1V to about 3.5V after about 12 hours. Connecting to usb recharges the battery in an hour or so.
This is a totally off-the-wall suggestion, based on nothing more than a hunch: perhaps the Xiao is not demanding enough current to overcome the internal circuitry that protects the battery from discharging while being stored. This battery is designed for supplying current up to 10 amps! While the Xiao is only asking for, like 100 milli-amps.
I have a Li-ion connected to the Battery connections, the script runs without problems (USB is not connected) But, if I now run a Deep Sleep script, this script runs exactly 1 time, the XIAO ESP32-C3 does not wake up anymore. After pressing the reset button the script runs again exactly 1 time. If this Deep Sleep script is used with a connected USB port, the script runs without problems and the XIAO ESP32-C3 wakes up according to my specifications.
Do I have to configure anything additionally on this board when using Deep Sleep?
Does anyone have this board running with Deep Sleep and connected Li-ion battery without USB?
I have three XIAO ESP32C3 boards, and all three show the same symptoms. Since this board advertises low power consumption, the main application should be a sensor in battery mode with deep sleep.
Hope for feedback, greetings italschwob.
This is an account of my first look at another member of the XIAO family of tiny development boards from Seeed Studio, the XIAO ESP32C3. There's no big project here, I just wanted to compile and upload a few simple projects from the PlatformIO and Arduino IDEs. I also wanted to look at MicroPython on the XIAO.
The source code for all the C++ projects is made available in a single GitHub repository. Some care was taken to set up each project in a way that both PlatformIO and the Arduino IDE can use the same source code. The repository notes explain how that was done. The repository does not contain the example MicroPython script presented in this post. In keeping with the use of the Arduino-ESP32, two example projects which do the same thing as the MicroPython code are included in the repository. These are not discussed at all in this post.
It is only right to disclose that I was given two XIAO ESP32C3 boards along with a XIAO nRF52840 Sense and a XIAO starter kit by Seeed Studio. Click on the image of the invoice on the right for details. The understanding was that Seeed Studio hoped that I would write a post about some of these products along the lines of my Overview of the SAMD21 Arm Cortex-M0+ Based Seeed Studio XIAO, but that there was no obligation, nor was a time line imposed. That's good because the package arrived five months ago, but I was so occupied elsewhere that I opened the first of the platic bags containing an ESP32C3 only on the 20th of February. As I write this, I assume that my contact at Seeed Studio must have given up hope, as he had the package send express by DHL back in October of last year!
If trying to judge how much I am beholden "to the man", take into consideration that there was no payment from Seeed Studio and that these notes and future posts have not and will not be submitted to Seeed Studio before being published. Besides, I don't really review such things as microcontroller development boards. I just enjoy tinkering with them and like to include some of them in useful projects around the house. Carefully noting how to work with these electronic devices is an important step in learning about them with the added benefit that there is a record to which I can refer later on when, inevitably, I will have forgotten most of the details.
Now is a good time to repeat that I do not claim any expertise about the subject matter covered in this post or any other post on this site. All I really do is describe how I go about doing things for my own use and I publish some of my notes in the hope that others may find the information useful. So this post is not a recommendation about various products because I simply do not have enough knowledge or experience to make judgments about the relative merits of the numerous devices that are available from many vendors. To be pedantic about it, most of my texts are descriptive and not prescriptive.
If trying to judge how much I am beholden "to the man", take into consideration that there was no payment from Seeed Studio and that these notes and future posts have not and will not be submitted to Seeed Studio before being published. Besides, all I really do is describe how I go about doing things for my own use and I publish some of my notes in the hope that others may find the information useful. So this post is not a recommendation about various products because I simply do not have enough knowledge or experience to make judgments about the relative merits of the numerous devices that are available from many vendors. Now is a good time to repeat that I do not claim any expertise about the subject matter covered in this post or any other post on this site.
With that out of the way, let me add that I purchased another two XIAO ESP32C3 from Seeed Studio as soon as they became available again in late December 2022 even if I had no experience with them. When Seeed Studio offered low shipping rates for these cheap ($5 US) devices with attractive specifications, I jumped at the chance to get them, along with a couple of XIAO nRF52840, especially given the supply issues that have been plaguing the markets for electronic enthusiasts in the last few years. At the same time, I also purchased a similar number of WEMOS W600-PICO development boards which is based on another Wi-Fi enabled microcontroller. Blame that purchase, in part, for the delay into looking at the ESP32C3. More accurately, I made an error in my initial look at the W600-PICO that I felt was so egregious that my priority was to rewrite the whole thing as quickly as possible. The similarities and differences are interesting enough that I may write a comparison of the two boards in the future. Almost sixteen months after writing that last line, I haven't fulfilled that half promise. On the other hand, there is a review of some sub-par Super Mini ESP32-C3 boards first published in May and a recent look at the XIAO ESP32C6 which I have dubbed the big brother (2024-07-12).
The XIAO ESP32C3 by Seeed Studio is the fifth and latest addition to the Seeed Studio XIAO Series of diminutive development boards. As the name implies it is based on the ESP32-C3 microcontroller from Espressif which some, Elliot Williams at Hackaday and digiblurDIY notably, have touted as a replacement for the ESP8266. The ESP32-C3 is a departure for Espressif because it has a RISC-V processor instead of an Xtensa L106 processor. It is also a departure for the XIAO series since this is the first member that is not based on an ARM Cortex processor.