Arduino Project to Product Part 5: Testing LoRa Range – Maker.io Tutorial | Digi-Key

In this video, Shawn Hymel continues the tutorial on operating voltage optimization by examining the effects of 1.9V and 5V supplies on the RFM95’s RF output power. He discusses power, dBm, antenna length and antenna radiation in detail as well as the formulas used to determine theoretical values. Using real-world tests to determine the actual effect on receiving range, Shawn employs RSSI (Received Signal Strength Indication) to quantify the empirical line-of-sight testing.

RELATED ITEMS

· 1050-1024-ND – Arduino UNO R3
· 1286-1117-ND – Digilent Analog Discovery 2
· 1528-1667-ND – Adafruit RFM95 LoRa Radio Tranceiver
· 1528-1359-ND – Adafruit BME280 Sensor
· ATMEGA328P-PU-ND – AVR – ATmega Microcontroller
· 1738-1326-ND – Breadboard
· 1276-1946-1-ND – 22pf Capacitors
· 10KQBK-ND – 10,000 Ohm Resistor
· 1568-1355-ND – FTDI Breakout Board
· EF2104-ND – .1uF Capacitor
· 377-2093-ND – Jumper Wires
· WHB1R0FECT-ND – One Ohm Resistor

Additional Resources:

RELATED VIDEOS
Arduino Project to Product – Part 1 – How to Accurately Measure Current

Arduino Project to Product – Part 2– How to Calculate Battery Life

Arduino Project to Product – Part 3 – How to Build an Arduino on a Breadboard

Arduino Project to Product – Part 4 – Optimizing Operating Voltage

Arduino Project to Product – Part 5 – Testing LoRa Range

Arduino Project to Product – Part 6 – Choosing a Voltage Regulator

Arduino Project to Product – Part 7 – How to Measure Small Currents

Arduino Project to Product – Part 8 – How to Put Arduino to Sleep

[Trent-trnx]

Shawn, thank you for making this video! So many beginners, me included, would just assume that a higher input voltage would give better performance. I'm really glad you spent a whole video debunking that with a neat setup!

[AhmadLafi-TheFirst]

Man this video should get way more likes and attention than it currently has. The content is unique, precious and explained in the most simplified way.

[jordiarmengolbosch]

The more videos of the series i see the more i like them. Your way of explaining things makes everything much easier.

[colinwallace]

Thanks so much for the video. I was stuck on a project that I was working on and this helped immensely!

[Tranksmighty]

Where can I find the code mentioned in the video?

[chrisam]

What if the antenna is a few bigger or a bit smaller?