Manufacturer part no. C126-EXT
Listed by m5stack at €12.57. Delivered to France, including shipping, VAT and any customs duty, it comes to about €33.08. Prices last checked on 2026-09-16.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
| Item | €12.57 |
|---|---|
| Shipping | €15.00 |
| VAT (20%) | €5.51 |
| Total delivered | €33.08 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
M5Stack AtomS3R Ext Programmable Controller w/ Expansion Board 8MB Flash & PSRAM
New · sold by ham-geek · ships from CN
Imported from outside the EU — duties and VAT included in the delivered cost; customs formalities and delays are not
€23.70
billed $27.35
€50.73 delivered
Third-party listings on eBay, matched to this product by its part number or title. Robotitem neither sells nor warrants these items: condition, stock and lead times are the seller's, and a listing disappears once sold. Delivered cost includes the seller's actual shipping.
| Weight | 75 g |
Description AtomS3R-Ext is a programmable controller based on the ESP32-S3 main control, designed for prototype development and extension. It features a universal expansion board on top, allowing users to connect and debug multiple IO ports, suitable for expanding and verifying various peripheral modules. It integrates the ESP32-S3-PICO-1-N8R8 main control, supports Wi-Fi functionality, and includes 8 MB of on-chip Flash and 8 MB of PSRAM, along with a power circuit converting 5V to 3.3V/2.8V/1.2V. It has a built-in three-axis BMM150 geomagnetic sensor and a six-axis BMI270 attitude sensor. The controller is equipped with a USB Type-C interface for power supply and firmware download, and features a HY2.0-4P expansion port, six GPIO and power pins for easy function expansion. Compared to previous ATOM series host products, the 3D antenna of AtomS3R-Ext has been enhanced, providing better signal performance and stability. With dimensions of only 24.0 x 24.0 x 12.0mm, it is ideal for prototype development and verification applications in embedded smart devices. Features Integrated ESP32-S3-PICO-1-N8R8 main control Nine-axis sensor system (BMI270 six-axis + BMM150 three-axis geomagnetic sensor) 8MB Flash and 8MB PSRAM Supports infrared transmission control function Expandable pins and interfaces Breadboard Development Platform Arduino IDE ESP-IDF PlatformIO BMM150 Magnetic Field Interference Products with magnets may interfere with the BMM150 magnetic field sensor, causing abnormal readings. When used with an M5 master control device containing a magnet, the magnet needs to be removed, and at the same time, the BMM150 sensor should be kept away from strong magnetic fields. Includes 1 x AtomS3R-Ext Applications Specifications Specification Parameter SoC ESP32-S3-PICO-1-N8R8@Dual-core Xtensa LX7, up to 240MHz USB USB OTG, USB Serial/JTAG Flash 8MB PSRAM 8MB Wi-Fi 2.4 GHz Wi-Fi 6-axis Attitude Sensor (BMI270) Accuracy: 0.05% (acceleration), 0.05°/s (angular velocity) I2C @
