Quick summary: M5Stack released the CoreMatrix on 6 November 2026, combining an ESP32-C61PriceAliExpress price, a 16 × 16 monochrome LED matrixPriceAliExpress price, motion sensing, microSD storage and M5Stack expansion in a 54mm-square controller. The company’s online store lists it at US$29.90.
M5Stack has launched the CoreMatrix C158, a compact Wi-Fi 6 controller designed for status icons, simple animations, sensor dashboards and interactive IoT projects. This is a complete M5Stack controller built around Espressif’s ESP32PriceAliExpress price-C61HR8 system-on-chip, rather than a bare chip or module.
What is inside the CoreMatrix
The front is a 16 × 16 white LED matrix driven by a TM1680. It is monochrome and low resolution, so this is better suited to symbols, short animations and glanceable state displays than text-heavy interfaces or colour graphics. A BMI270 six-axis inertial measurement unit adds motion and orientation input, including interrupt-based wake-up.
M5Stack specifies a single-core 32-bit RISC-V processor running at up to 160MHz, 16MB of flash and 8MB of quad PSRAM. The board also includes a passive buzzer, three user buttons, a separate power button and a microSD slot. Expansion is available through M5-Bus, a four-pin HY2.0 Grove connector and an MX1.25 four-pin USB expansion connection, alongside the main USB-C port.
The enclosure measures 54 × 54 × 11.6mm and weighs 28.9g. That makes it closer to a ready-to-enclose control surface than a conventional pin-header development board, although the low-resolution display and M5Stack-specific expansion system will shape what it suits.
Power management is a central feature
CoreMatrix uses M5Stack’s M5PM1 and M5IOE1 devices for charging and staged power control. The M5PM1 is the same power-management device sold separately as the Stamp Timer Power2. It can retain selected rails and wake the controller from buttons or the BMI270, which is useful for battery-powered indicators that spend most of their time off.
The manufacturer quotes 8.21µA at 4.2V in shutdown and 128.06mA at 4.2V at full load. Those are vendor measurements, not independent test results, and real consumption will depend on LED brightness, radio activity and attached hardware. Charging current can be set to 180mA or 650mA. The package contents list the CoreMatrix and a hex key, so buyers should not assume that a battery is included.
Software support and wireless limits
M5Stack provides launch documentation for Arduino IDE and UIFlow2. Its Arduino instructions require M5Stack Board Manager 3.3.10-a or newer, the M5CoreMatrix board target, M5Unified 0.2.29 or newer and M5GFX 0.2.36 or newer. The display examples use M5GFX rather than treating the matrix as a conventional high-resolution screen.
There is an important distinction between the controller and its silicon. Espressif’s ESP32-C61 includes 2.4GHz Wi-Fi 6 and Bluetooth LE, but M5Stack’s CoreMatrix launch specification highlights only Wi-Fi 6. The launch documentation also does not list ESPHome support. Neither Bluetooth behaviour nor ESPHome compatibility should therefore be assumed from the chip alone. For the chip-level differences, see our ESP32-C61 versus ESP32-C6 comparison.
Price and availability
M5Stack’s online store listed the CoreMatrix at US$29.90 with more than ten units shown in stock when checked on 8 November. Shipping is calculated separately, and the company had not published a dedicated UK price on the product page. UK buyers should therefore allow for delivery costs and any applicable taxes or import handling.
Sources
M5Stack release history — launch date.
M5Stack CoreMatrix documentation — board specifications and power figures.
M5Stack CoreMatrix store page — price and availability.
M5Stack Arduino setup and display example — current software requirements.
Espressif ESP32-C61 series datasheet — chip-level wireless and processor details.
