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.
Specs
| ■ MicroCat.1 (Pre-release) | |
|---|---|
| Processor | Raspberry Pi RP2350B |
| Memory | 520kB (Internal) + 8MB (External) |
| Storage | ROM 16MB |
| LTE Module | Quectel SIM7672JP (LTE Cat.1 bis) |
| LTE Speed | Down Max 10Mbps / Up Max 5Mbps (Theoretical) |
| Bands | B1/B3/B8/B18/B19/B26 |
| Antenna | Onboard Antenna |
| SIM Slot | nanoSIM |
| Interface | GPIO (Pico 2 compatible), USB-C |
| Power | USB-C 5V Input (Current TBD) |
| OS/Soft | PPP-enabled MicroPython (Custom environment) |
| Size | 85mm x 56mm |
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.
Exterior
Pico 2 compatible pinout allows reusing existing HATs. Not suitable for "Outdoor permanent install as-is". Needs enclosure/waterproofing.
Plan maintenance access for the SIM slot.
Others
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.
| Retailer | Price (Ref) |
|---|---|
| Mechatrax | 16,500 JPY (Pre-release price) |
Related Links
- Official Store: https://store.mechatrax.com/product.php?id=84
- Press Release: https://prtimes.jp/main/html/rd/p/000000024.000023719.html
- GitHub Wiki (Hardware): https://github.com/mechatrax/microcat1/wiki/Hardware
- GitHub Wiki (Software): https://github.com/mechatrax/microcat1/wiki/Software