Get LTE Running Instantly with MicroPython. Checking MicroCat.1 (Pre-release) Specs
Mechatrax announced the "MicroCat.1 (Pre-release)". Integrating RP2350B + LTE Cat.1 bis module, it's a MicroPython microcontroller board for jumpstarting cellular IoT prototypes. Pre-flashed with PPP-enabled firmware, the ability to communicate right out of the box is its biggest appeal.
Mechatrax announced/released the MicroCat.1 (Pre-release) on Dec 16, 2025. Product info is on the official store/press release.
It’s a MicroPython microcontroller board integrating RP2350B and LTE Cat.1 bis module SIM7672JP, hitting the spot for those wanting the shortest path to cellular IoT prototyping.
Note that it’s a pre-release version, so specs may change, and power consumption is currently TBD.
RP2350B + LTE Cat.1 bis + PPP MicroPython integrated on an 85x56mm board.
Key points: Pre-release status (Current TBD) and Onboard Antenna (Requires RF care in enclosures).
Features
Main Components
Combines RP2350B (Higher-end than Pico 2’s RP2350A) and SIM7672JP (LTE Cat.1 bis).
RP2350 side runs Dual Cortex-M33 @ 150MHz. Not “Linux”, but “Real-time MCU”. Ideal for classic IoT: Collect Sensors -> Send Cloud -> Sleep.
Memory & Storage
RAM: 520kB + 8MB. ROM: 16MB.
Note: Some early exhibition info had typos (“16GB/8GB”), but official store clarifies MB. It’s a microcontroller, not a PC.
Usage: Collect data via MicroPython, send via LTE, buffer locally on failure.
Network (LTE Cat.1 bis)
SIM7672JP supports max 10Mbps (DL) / 5Mbps (UL). Docomo/au IOT tested.
Bands: B1/B3/B8/B18/B19/B26.
Practical speeds depend on signal/contract. “Max 10Mbps” is just a ceiling.
Software (PPP MicroPython)
Pre-flashed with PPP-enabled MicroPython firmware. SIM7672 control libraries also provided.
“Buy it -> Talk via MicroPython -> Connect” loop is optimized. Huge plus for prototyping speed.
Power: USB-C 5V. Current is TBD. Wait for measurements before planning battery ops.
I/O: GPIO (Pico 2 compatible), nanoSIM, USB-C.
Summary
MicroCat.1 (Pre-release) is a shortcut for those who want to “Shape LTE communication with MicroPython ASAP”.
Pre-flashed PPP support makes the “First Connect” extremely fast.
Suited for: Quick prototyping of field IoT.
Not suited for: Those needing a finished product (Case/Cert/Mass-prod ready) immediately.
Personally, “One board to Cellular” is strong. Just RF test the enclosure early.
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