Lora Ra-02 + Arduino Problem

Filip's picture

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Joined: Sep 19, 2021

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Lora Ra-02 + Arduino Problem
September 19, 2021 - 4:59pm

Hi Guys!
First of all I would like to thank You for having me here. 
Hopefully I make a post on a propper site. 

I was trying to reach connection beetween two lora ra-01 modules which were connected to the arduino's uno (non-oryginal). I did all as on the projcet documentation (https://circuitdigest.com/microcontroller-projects/arduino-lora-sx1278-i...). 
First everything was fine, everything worked well. After several hours when I attempt to try connection on more time, everything crashed. I found a problem with sending packets (smts works, smts not), but main issue was about receiver. Used to be like receiver, received strange line of code going really fast on the screen or nothing is happining, just title "Lora Receiver". What I thought is that I burned out Lora modules somehow, so decided to buy lora ra-02 modules. Unfotunatly same problem works for couple minutes and then same issues. When I import code for several times in a row on an arduino it would work for a while. 
Help me please and Best Regards :)

Sourav Gupta's picture

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Seems like a power related issues. What Power supply are you using?

Filip's picture

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I simply use normal usb-b cable connected to the PC. I've been trying to supply power by normal charger but still same problem. What should I use then? 

Sourav Gupta's picture

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What is the maximum power rating of the charger?

Filip's picture

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I have severals charger:
9V 1.67A
5V 2A
5V 1.55A (7.8W)
5V 1A
 

Sourav Gupta's picture

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THe module and the microocntroller works with 3.3V...how you converting the voltage from the charger?

Filip's picture

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I did not convert cause there is 3.3 V going from arduino pinout. Power suply which i attached was only to the arduino