LoDuino is an adorable low cost 8Mhz 3.3v ATMEGA328 Arduino with Lora radio, it’s breadboard friendly footprint makes it great for quick prototyping. Applications that utilize good power conservation practices can run for years on a small 1000mAh battery. This is the U.fl version for external high gain or directional antennas.

NOTE: This version will not fall under modular FCC certification. Please see the version that has integrated antenna if you need FCC compliance.

Hit the documentation link on the right for the most up to date instructions/schematics.

Features

• Lora radio for 915Mhz ISM — this radio does not have a managment IC like the RN2903 which removes limitations and offers lower power consumption.
• 4+ miles Line-Of-Site communication range when using low bandwidth Lora. Modulation type and bandwidth settings greatly impact range. Need more range? Consider the U.FL version which allows you to use high gain/directional antennas.
• Lipo charger with charging status indicator fed into the Arduino.
• Built in battery voltage reading.
• Optimized for battery applications <30uA standby current. This can be much further reduced to ~5uA by disabling the brown out detection and shutting off timers.
• Two 3.3v regulators: One that’s always on powering Arduino and radio. The second is controlled by the arduino allowing the user to shut it off in case sensors that can’t sleep or sleep at a high standby current are being used.
• Two 1.5 amp fuses. One on the 5v charging breadboard output and one on the battery input. Just to help protect in case you’ve got it installed somewhere and a short is introduced from vibrations or other malfunction.