Archive: ESP32 bi-directional communication
Budget
250$
per month
Posted: 5 years ago
Closed
- Description
- We are working with the Heltec ESP32 v2 LoRa kit. We want to create a mesh network that uses the LoRa capabilities of the board. We have a code at the moment that transmits from the slave nodes to the master, and we can see the messages sent from the slaves to the master on the serial monitor. However, we cannot get the slaves to talk to each other and possibly send another node's data to the master if a node becomes inoperable. When we add both parts of the code, TX and RX, the TX seems to take over and nothing else will come trough the mesh. We know that these boards can transmit and receive, but we can't seem to get them to work at the same time, it's either one or the other. We have read about an antenna switcher, but have not found anything specific to our board. I have copied our code down below and provided a pinout for the Heltec board. We look forward to hearing from you.
#include
/*********
Modified from the examples of the Arduino LoRa library
More resources: https://randomnerdtutorials.com
*********/
#include
#include
//define the pins used by the transceiver module
#define SS 18
#define RST 14
#define DIO1 26
#define SCK 5 // GPIO5 SCK
#define MISO 19 // GPIO19 MISO
#define MOSI 27 // GPIO27 MOSI
int counter =0;
void setup() {
//initialize Serial Monitor
Serial.begin(115200);
while (!Serial);
Serial.println("LoRa Receiver");
//setup LoRa transceiver module
SPI.begin(5, 19, 27, 18);
LoRa.setPins(SS, RST, DIO1);
//replace the LoRa.begin(---E-) argument with your location's frequency
//433E6 for Asia
//866E6 for Europe
//915E6 for North America
while (!LoRa.begin(915E6)) {
Serial.println(".");
delay(500);
}
// Change sync word (0xF3) to match the receiver
// The sync word assures you don't get LoRa messages from other LoRa transceivers
// ranges from 0-0xFF
LoRa.setSyncWord(0xF1);
LoRa.setSyncWord(0xF2);
LoRa.setSyncWord(0xF3);
LoRa.setSyncWord(0xF4);
//LoRa.setSyncWord(0xF3);
Serial.println("LoRa Initializing OK!");
}
void loop() {
// try to parse packet
int packetSize = LoRa.parsePacket();
if (packetSize) {
// received a packet
Serial.print("Received packet '");
// read packet
while (LoRa.available()) {
String LoRaData = LoRa.readString();
Serial.print(LoRaData);
}
// print RSSI of packet
Serial.print("' with RSSI ");
Serial.println(LoRa.packetRssi());
}
Serial.print("Sending packet: ");
Serial.println(counter);
//Serial.println(counter);
//Send LoRa packet to receiver
while (LoRa.beginPacket()) {
LoRa.print("#3 Testing TXRX ");
LoRa.print(counter);
LoRa.endPacket();
counter++;
break;
}
delay(1000);
}
// WIFI_LoRa_32 ports
// GPIO5 -- SX1278's SCK
// GPIO19 -- SX1278's MISO
// GPIO27 -- SX1278's MOSI
// GPIO18 -- SX1278's CS
// GPIO14 -- SX1278's RESET
// GPIO26 -- SX1278's IRQ(Interrupt Request)
Working conditions:
Fixed Price
Under $250
Skills:
arduino,radio frequency hardware (rf),lora,esp32
- Category
Similar freelance jobs
$7Hi Robert P. , I noticed your profile and would like to offer you my project. We can discuss any details over chat....
1 year ago
"Hello, I need to create a website based on a . psd design file. Please also specify the timeframe within which you can complete this. Technical requirements: Layout (not pixel-perfect, but close to it) Responsiveness (the website should properly adapt to different screen sizes and devices) Clean code......
1 year ago
Project Title: Delphi Code Feature Creation Using delphi: Check to see if this already exsits, if not: create a shedulled task to start my program on PC startup with highest permissions, with no password or prompt. program is called for example: C:\Program Files (x86)\Myfolder\myprogram. exe If it already......
1 year ago
I want to create a program for customers and sellers to be able to use, to create a template for there artwork and be able to size them to there specific needs. And be able to download them as pdf or png files. This program will benefit the clothing industry with the industry i am in....
1 year ago
Hi, I am not quite sure if what I am asking is possible but within my University degree there is a calculator program which only works on the HP Prime prime calculator, I own a Casio fx-CG50 AU. I was hoping to have this program converted into a format which is compatible with my Casio calculator, all......
1 year ago
I am looking for a skilled C++ developer to help with a real-time object detection system for my project....
1 year ago
Project Title: Correct Rcpp armadillo code Overview: I am seeking a skilled developer to fix a compilation error in my Rcpp armadillo code. The code is currently throwing a compilation error, and I need it to be resolved promptly. Requirements: - Proficient in Rcpp and armadillo library - Strong understanding......
1 year ago
Project Description: - I am looking for a freelancer who can combine all the columns of 2 rows with similar values in Telerik Reporting. - The combined data needs to be displayed in a table view. - Ideal skills and experience for this job include: - Proficiency in Telerik Reporting. - Strong understanding......
1 year ago
$250Bonjour Dmytro M. , j'ai remarqué votre profil et je souhaite vous proposer mon projet. Nous pouvons discuter des détails via le chat....
1 year ago
Hello, I am looking to develop a unity soccer game with moves like score hero 1. Map with 1-3 stars achievments 2. engine to make the goals like i want 3. smooth game play 4. IAP , shop , buy lives 5. lives to play 6. finger smoothness touch 7. the level will be added automticlly to the map 8. rewind......
1 year ago
Project Title: Bootloader For Renesas RL78 mcu Description: I am looking for a skilled developer to create a bootloader for the Renesas RL78 mcu. The ideal candidate should have experience with Renesas RL78 mcu and be familiar with the development environment. bootloader code is ready need help for run......
1 year ago
I am using EMA´s (50/75/100/200),two Stoch (5/5/5 and 5/3/3), RDX Indicator and the Indicator "The Arty". For Short Positions the Prive has to be under the 200 EMA (the 100EMA under 200, 75 under 100, 50 under 75, NOT crossing) and for Long Positions over the 200 EMA ( 100 over 200, 75 over 100, 50 over......
1 year ago
My project involves using an Emotional Stroop Task to measure and assess attentional bias towards emotional stimuli. To do this, I will be using the Drift Diffusion Model which is an analytical model to study the human decision making process. My study will need to include 90 participants in order to......
1 year ago
I'd like to extract tables from pdf invoices files. At this stage i really only want the products that are in the tables on the invoices. The only information i would like from the invoices is supplier date (received) location received. Within thetables i require stock code, product item, the unit measurement......
1 year ago
Im creating a config using 'openbullet 1. 4', everything added successfully, due i have 3 years of using openbullet, but this request i never faced it before!...
1 year ago
This position is responsible for verifying data quality reports and queries, correcting errors and also tracking them....
1 year ago
We are currently looking for developer to contact us on developing integration/plugin for below listed platform. Please drop me message on which plugin you're able to develop. Please send similar plugin portfolio of your previous work. The plugin need to ready for uploading to marketplace . ActiveCampaign.......
3 year ago
Similar freelance jobs
- Freelance jobs for Web Developer
- Freelance jobs for Database Developer
- Freelance jobs for Software Developer
- Freelance jobs for System Developer
- Freelance jobs for Game Developer
- Freelance jobs for Mobile App Developers
- Freelance jobs for QA & Testing specialist
- Freelance jobs for embedded software developer
- Freelance jobs for CRM & ERP developer
Drag