📡 MTL-2: Portable High-Power LoRa node

MTL-2

MTL-2 - Это портативное энергоэкономичное устройство, основанное на модулях Ebyete и ProMicro (NRF52840). Предназначено для работы в MeshCore, Meshtastic, в качестве клиента и ретранслятора.

Ключевые особенности

• LoRa 30-31dBm
• Oled 1.3'
• Buzzer
• Switch Buzzer/Led (Quiet mode)
• Switch POWER set Low/Hight (20dBm/30dBm)
• Vibro-notification
• 3-position multifuctional switch or 3 button
• Connector for GPS-module like VK2828U7G5LF
• 1A Standalone Linear Li-Ion Battery Charger
• Battery protection lithium-ion/polymer battery
• Li-Ion cell holder 2x18650 TBH-18650-2A-P (FC1-5212)

Органы управления

Software MeshCore

The software was developed by VladelfPv MTLmicro

Software Meshtastic

Use the J9 jumper for compatibility with FakeTec. In this case, DC-DC Up remains constantly on, which will increase battery consumption to 10mA.

As a jumper, you can use the chip ferrite beads like BLM21PG221SN1D, BLM21PG121SH1D etc Оther settings are configured in the Meshtastic software.

GPIO:

• 6-Buzzer.
• 8-Vibro.

Update Software

To update the Software, click the RESET button twice. In the window that opens, copy the firmware file xxxxx.uf2

Frequency range

150-170Mhz

• e22-170m30s SX1268 30dBm

430Mhz

• e22p-433m30s SX1268 30dBm
• e22-400m30s SX1262, SX1268 30dBm
• e22-400m33s SX1268 33dBm

868-915Mhz

• e22p-868m30s SX1262 31dBm
• e22p-915m30s SX1262 31dBm
• e22-900m30s SX1262 30dBm
• e22-900m33s SX1262 33dBm

Files

*Gerber and Pick Place

*Shematic and documentation for E22

*Shematic and documentation for E22p

*IO spreadsheet

*3d model PCB step

*3d print model Case

⚠️Special attention

Replace the capacitor C6 with a jumper!

Additional images