Hey everyone,

Like many of you, every time I wanted to deploy a remote LoRa sensor node, I ended up with a bird's nest of wires. You know the drill: an Arduino or ESP32, a separate LoRa module, a buck converter to handle 12V/24V industrial power, and a bunch of discrete components just to read a 0-10V sensor.

To fix my own frustration, I spent the last few months designing ArduLora – a compact, ultra-low-power development board that puts everything you need for industrial IoT onto a single piece of hardware.

It’s completely open-source (MIT license), and I’ve just released the latest revision along with 3D-printable enclosure files.

What’s packed inside:

• The Brain: It runs on a RAK3172 module (STM32WLE5CC @ 32MHz). This means you get full LoRaWAN (Class A, B, C) and LoRa P2P right out of the box.
• Power That Makes Sense: It accepts anywhere from 5V to 24V DC via a terminal block (or 5V USB-C). No external step-down modules needed.
• True Deep Sleep: I added a hardware power gate pin (PB5). You can use it to completely cut off power to external sensors when the MCU goes to sleep, saving a ton of battery life.
• Industrial-Ready: There's an onboard RS485 transceiver for hardware Modbus RTU, plus two high-voltage analog inputs configured for 0-10V measurements.

The Software Side:
You don't have to learn a whole new toolchain. It programs natively in the Arduino IDE using standard functions mixed with the RAKwireless RUI3 APIs. I also published a helper library to the official Arduino Library Manager—just search for ArduLora and hit install.

Everything is up on GitHub, including schematics, pinout maps, and step-by-step example codes (covering everything from GPS integration and Modbus to deep sleep timers):

GitHub Link: https://github.com/NamNamIoT/ArduLora

I’m currently looking for ways to improve the hardware design for the next revision.

• How do you feel about the power gating implementation?
• Are there any other industrial interfaces or specific sensors you wish were broken out on a board like this?

Would love to hear your thoughts, critiques, or any feedback you have!

I'm building a drone f450 frame and fsi6 receiver and kk2 .1.5. everything's done .now i have ultra Sonic sensors and Arduino nano. Help me submission is on 25 th july

planetary gearbox 3d file:

https://www.printables.com/model/1787639-planetary-gearbox

I’ve now loaded the firmware onto the ESP32 and can connect it to the FC via a wired connection. However, the Mission Planner isn’t detecting data from the GPU and IMU—it’s only detecting the heartbeat. If anyone knows the cause, please let me know. The pins I’ve connected on the ESP32 are as shown in the image. I’m using Serial Port 1.
If any additional data is needed, I’ll attach it.
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