bestbeet / UCA_Board

Gerber Layout of the UCA board

UCA_Board

Version 1.0.0, November, 2017 Author: Fabien Ferrero

This PCB was developed to ease connection between an Arduino Mini Pro, and RFM95 LoRa module, AA battery and a printed antenna.

Codes for the microcontroller for LoRa communications can be found on this link in the Arduino section : https://github.com/CongducPham/LowCostLoRaGw

I'm also including in this github some codes compatible with LoRaWan in the /Arduino_Code section.

PCB UCA

This PCB has been designed to enable the connection of multiple sensors, few possibilities are listed in this figure :

Bill Of Material

• Arduino Mini Pro 3.3V 8MHz https://fr.aliexpress.com/item/10pcs-ATMEGA328P-Pro-Mini-328-Mini-ATMEGA328-3-3V-16-MHz-for-Arduino-3-3V-16/32784455996.html?spm=a2g0s.13010208.99999999.276.LOMiw9
• RFM95W https://fr.aliexpress.com/item/RFM95W-RFM95-868MHz-LORA-SX1276-wireless-transceiver-module-20DBM-3KM-Best-quality/32810607598.html?spm=a2g0s.9042311.0.0.bMWhGH

Optional :

• DHT-22 ( temperature and humidity sensor) https://fr.aliexpress.com/item/Free-Shipping-1pcs-DHT22-digital-temperature-and-humidity-sensor-Temperature-and-humidity-module-AM2302-replace-SHT11/32730343520.html?spm=a2g0s.9042311.0.0.RsBFuh

• BME280 ( temperature, barometer and humidity sensor) https://fr.aliexpress.com/item/3In1-BME280-GY-BME280-Digital-Sensor-SPI-I2C-Humidity-Temperature-and-Barometric-Pressure-Sensor-Module-1/32830483099.html?spm=a2g0s.9042311.0.0.2GH3nf

• RGB LED https://fr.aliexpress.com/item/100pcs-Ultra-Bright-Red-Green-Blue-SMT-SMD-LED-RGB-5050-LED-DIODE-Chip-Light-Emitting/32340120687.html?spm=a2g0s.9042311.0.0.RsBFuh

• Ultrasound distance sensor (pay attention that this sensor need 5V to work properly, and you will need some resistor divider to not damage your Arduino board) https://fr.aliexpress.com/item/Free-shipping-10Pcs-lot-Ultrasonic-Module-HC-SR04-Distance-Measuring-Transducer-Sensor-for-ar-du-ino/32745224945.html?spm=a2g0s.9042311.0.0.RsBFuh

• Step-up voltage booster https://fr.aliexpress.com/item/5pcs-2-in-1-DC-DC-Step-Down-Step-Up-Converter-0-8V-6V-to-3/32759171595.html?spm=a2g0s.9042311.0.0.bMWhGH

• 3-axis accelerometer : https://learn.sparkfun.com/tutorials/mma8452q-accelerometer-breakout-hookup-guide

Wiring

 Arduino Mini       LoRa RFM95W 
 Mini Pro           Module
 D8          <----> RST
 MISO  (D12) <----> MISO
 MOSI  (D11) <----> MOSI
 SCK   (D13) <----> CLK
 SS    (D10) <----> SEL (Chip Select)
 D2          <----> DIO0
 D7          <----> DIO1
 D9          <----> DIO2
 3.3V        <----> Vcc

Layout

The layout of the PCB is available the gerber section. It has been designed to be fabricated on a 0.8mm-thick FR4 2 layer PCB. Depending of your need, it can be fabricated with different thickness, but the antenna has to be adjusted.

The board can be directly ordered on this link :

Librairies

You will need some librairies to run the code, you can look in the libraries section to find the different libs needed for running the code.

License

All rights reserved. This Gerber, program and the accompanying materials are made available under the terms of the MIT License which accompanies this distribution, and is available at https://opensource.org/licenses/mit-license.php This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Maintained by Fabien Ferrero