Here is just the camera configuration and the two UARTs I need to use. The problem occurs when I use

Here is just the camera configuration and the two UARTs I need to use. The problem occurs when I use SoftSerial.

BenOP•5/23/24, 10:33 AM

Can anyone please help me solve this problem? I'm trying to send the SBUS signal via a GPIO pin, and I'm not sure if that's going to work.

BenOP•5/23/24, 10:34 AM

ЯΣJIП•5/23/24, 11:01 AM

BBen Hi all,I'm working with the ESP32-CAM for recognizing QR codes. Everything worke...

wafa_ath•5/23/24, 1:47 PM

the issue appears to be caused by the use of Software Serial library,Use (UART) instead of Software Serial, Here's an example of the configuration on how you could use hardware UART for transmitting the SBUS signal

BBen Here is just the camera configuration and the two UARTs I need to use. The probl...

Renuel Roberts•5/23/24, 6:35 PM

Am unable to access and see your code but from your question you can use the code below:

#include <HardwareSerial.h>
#include <Wire.h>
#include "esp_camera.h"
#include "QR_Code.h"

HardwareSerial MySerial(2); // Use Serial2 for SBUS

void setup() {
Serial.begin(115200);
MySerial.begin(100000, SERIAL_8E2, RX2, TX2); // Initialize SBUS with appropriate baud rate and pins

// Camera initialization code
camera_config_t config;
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
config.pin_d0 = Y2_GPIO_NUM;
config.pin_d1 = Y3_GPIO_NUM;
config.pin_d2 = Y4_GPIO_NUM;
config.pin_d3 = Y5_GPIO_NUM;
config.pin_d4 = Y6_GPIO_NUM;
config.pin_d5 = Y7_GPIO_NUM;
config.pin_d6 = Y8_GPIO_NUM;
config.pin_d7 = Y9_GPIO_NUM;
config.pin_xclk = XCLK_GPIO_NUM;
config.pin_pclk = PCLK_GPIO_NUM;
config.pin_vsync = VSYNC_GPIO_NUM;
config.pin_href = HREF_GPIO_NUM;
config.pin_sscb_sda = SIOD_GPIO_NUM;
config.pin_sscb_scl = SIOC_GPIO_NUM;
config.pin_pwdn = PWDN_GPIO_NUM;
config.pin_reset = RESET_GPIO_NUM;
config.xclk_freq_hz = 20000000;
config.pixel_format = PIXFORMAT_JPEG;

if (psramFound()) {
config.frame_size = FRAMESIZE_UXGA;
config.jpeg_quality = 10;
config.fb_count = 2;
} else {
config.frame_size = FRAMESIZE_SVGA;
config.jpeg_quality = 12;
config.fb_count = 1;
}

// Initialize the camera
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
Serial.printf("Camera init failed with error 0x%x", err);
return;
}

// QR Code recognition setup
// ...
}

void loop() {
// QR Code recognition logic
// ...

// SBUS communication logic
if (MySerial.available()) {
// Read and transmit SBUS data
while (MySerial.available()) {
int incomingByte = MySerial.read();
// Process SBUS data
}
}

// Attach your code logic here
}

This only works if you use the hardware esp32 ports instead of the software

BenOP•5/23/24, 8:33 PM

With both codes, I can only receive an SBUS signal via RX2 (pin 16). However, I need to send the same SBUS signal via TX, which is not available on the ESP32-CAM. That's why I created a softSerial. The problem is that when I use the camera, everything works perfectly except the camera itself, which gives the error (GPIO is already installed)

BenOP•5/23/24, 8:37 PM

I'm using two ESP32-CAMs. One ESP32-CAM sends frames to a laptop and receives x, y, z coordinates via WiFi. These values are then sent to the other ESP32 via I2C. The ESP32 generates a PWM signal based on these values and generates an SBUS signal. However, this is not an optimal solution

BenOP•5/23/24, 8:38 PM

i hope that makes sense

SSaßì ** Friendly reminder about Upcoming Event** https://discord.com/invite/A9fsjr4K?...

techielew•5/23/24, 9:24 PM

Hey Linux lovers, @1158820847566471281 and @1158822820860674098, don't forget that tomorrow morning at 15:00 GMT we're going to be diving into the world of embedded linux, supercomputers, and open source with Iain Runciman. Learn how Linux has evolved and how you can evolve with it through shared experience.

See you there! https://app.livestorm.co/devheads-community/devheads-weekly-office-hours-1

ThroughPut Marketing

DevHeads Weekly Office Hours | ThroughPut Marketing

PLEASE JOIN AS A SPEAKER IF YOU WANT TO PARTICIPATE IN THE DISCUSSION!Join DevHeads' weekly Office Hours, Fridays at 3 PM (1500) GMT to meet other DevHeads and riff on a variety of topics for...

Ttechielew Hey Linux lovers, <@&1158820847566471281> and <@&1158822820860674098>, don't for...

techielew•5/24/24, 2:07 PM

@Event Pings! We'll see you in less than an hour for our weekly Office Hours: https://app.livestorm.co/devheads-community/devheads-weekly-office-hours-1

nour_oud•5/24/24, 4:44 PM

Welcome @Ming to the community! Can you introduce yourself and tell us about your professional life?

Ming•5/24/24, 4:53 PM

Quick Hi to all. I'm Ming (Iain Menzies-Runciman). I have been working with Unix/Linux for over 30 years ranging from high-end supercomputers through to the Embedded Linux systems that I currently specialise on. I spend my days building Yocto systems, integrating OTA Updates with Mender and interfacing IoT systems with cloud-based services. I have just presented on the weekly office hours - so for anyone who missed it, go catch the replay!

MMing Quick Hi to all. I'm Ming (Iain Menzies-Runciman). I have been working with Unix...

Camila_99$$•5/24/24, 5:01 PM

Hi Mr. Ming ! I was there watching, and your presentation was very useful and interesting. Thank you

MMing Quick Hi to all. I'm Ming (Iain Menzies-Runciman). I have been working with Unix...

wafa_ath•5/24/24, 5:32 PM

Hi Mr. @Ming , i was attending too , thank you so much for sharing your knowledge with us , it was really interesting and aspiring

BenOP•5/25/24, 7:35 AM

Guys, I'm trying to connect an ESP32-CAM to an ESP32 using the I2C protocol. Which pins on the ESP32-CAM should I use? I used pins 14 and 15, but it is not working.

BBen Guys, I'm trying to connect an ESP32-CAM to an ESP32 using the I2C protocol. Whi...

Accur4te•5/25/24, 10:04 AM

Try d21 and d22

aymen ammari•5/25/24, 10:09 AM

Hi everyone, I'm looking for a sensor to use as body heat sensor for medical project, I'm trying to use LM35 with esp32 and IOT system but my problem is that I don't find it suitable (casing)
So any suggestions on what to use, and thank you in advance

AAccur4te Try d21 and d22

BenOP•5/25/24, 11:44 AM

There is no d21 and d22 in esp32cam

BenOP•5/25/24, 11:46 AM

I also tried to use Bluetooth. The master is sending data correctly, but the slave isn't even connecting to the master

Aaymen ammari Hi everyone, I'm looking for a sensor to use as body heat sensor for medical pro...

Joseph Ogbonna•5/25/24, 12:26 PM

Hey @aymen ammari I found this for you, it has higher temperature range and a very precise accuracy and a temperature tolerance of +-1%.

https://www.microscale.net/products/gy-bme280-5-bme280-5v-atmospheric-pressure-humidity-temperature-sensor-module-for-arduino-spi-iic?variant=47681006502163&currency=NGN&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gad_source=1&gclid=Cj0KCQjwmMayBhDuARIsAM9HM8fb9QiaDce0P6ZcaPYwUdyKAQ-Z3JrGD0E2WE1Mb55sgS0ShkuKOJcaAu3rEALw_wcB

Microscale

GY-BME280-5 BME280 5V Atmospheric Pressure Humidity Temperature Sensor

Description: GY-BME280 is a Breakout Board featuring a Bosch Sensortec ME280 Temperature, Humidity & Pressure Sensor. The board has selectable I2C address jumper (solder link GS2), I2C pull-up resistors, 7 pin header 2.54mm, and two mounting holes 3.5mm. Default setting of the board; single power rail Vdd=Vdd_IO (s

Aaymen ammari Hi everyone, I'm looking for a sensor to use as body heat sensor for medical pro...

Joseph Ogbonna•5/25/24, 12:27 PM

What kind of casing type are you looking for. And where will it be placed

Jason•5/25/24, 2:25 PM

Hi. Everyone. I am looking for senior IT dev to mentor me. I can pay for this.

Jason•5/25/24, 2:25 PM

Please dm me if you are interested.

Aaymen ammari Hi everyone, I'm looking for a sensor to use as body heat sensor for medical pro...

Ming•5/25/24, 3:44 PM

I'm using one of these in a medical device for one of my projects
https://www.analog.com/en/products/max30208.html

JJoseph Ogbonna What kind of casing type are you looking for. And where will it be placed

aymen ammari•5/25/24, 3:46 PM

I want to design something to stick on my finger to measure temperature / heartbeat / SPO2 All at the same time

MMing I'm using one of these in a medical device for one of my projects https://www.an...

aymen ammari•5/25/24, 3:47 PM

It can work with Max30102 in parallel right?

Ming•5/25/24, 3:51 PM

You will need a PPG for the SpO2 & heartbeat - but yes, it will work with them in parallel

aymen ammari•5/25/24, 3:52 PM

What is PPG?

Ming•5/25/24, 3:53 PM

It's photoplethysmogram - https://en.wikipedia.org/wiki/Photoplethysmogram
Here's an article on it's use - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6426305/

Photoplethysmogram

A photoplethysmogram (PPG) is an optically obtained plethysmogram that can be used to detect blood volume changes in the microvascular bed of tissue. A PPG is often obtained by using a pulse oximeter which illuminates the skin and measures changes in light absorption. A conventional pulse oximeter monitors the perfusion of blood to the dermis an...

PubMed Central (PMC)

A review on wearable photoplethysmography sensors and their potenti...

Photoplethysmography (PPG) is an uncomplicated and inexpensive optical measurement method that is often used for heart rate monitoring purposes. PPG is a non-invasive technology that uses a light source and a photodetector at the surface of skin to measure ...

JJason Hi. Everyone. I am looking for senior IT dev to mentor me. I can pay for this.

techielew•5/25/24, 4:22 PM

Hey @ Merlin , welcome. Throw this sort of request into the #seeking-collabs channel so it doesn't get lost in the chat stream

Aaymen ammari I want to design something to stick on my finger to measure temperature / heartb...

Joseph Ogbonna•5/25/24, 9:48 PM

Great. The sensor I sent should be a good one.

JJoseph Ogbonna Great. The sensor I sent should be a good one.

aymen ammari•5/25/24, 9:54 PM

Thank you, this helps a lot

BBen There is no d21 and d22 in esp32cam

Accur4te•5/26/24, 3:05 AM

brhh i mean on esp32 there are pin 21 and 22 were you have to connect sda and scl pins to it which are there on the esp32cam

techielew•5/26/24, 6:18 AM

Hi @Event Pings,
Trouble connecting a target MCU to your development PC? Let's explore UART driver development tomorrow with @Umesh Lokhande at 15:00 GMT.

Join us: https://discord.gg/HQhGF7F9?event=1242959044159733874

Ttechielew Hi @Event Pings, Trouble connecting a target MCU to your development PC? Let's e...

techielew•5/26/24, 2:51 PM

Hey @Event Pings! We're gonna be getting started with UART driver development in about 10 minutes in the Engineering Hour stage: https://discord.com/channels/1130679493799977062/1212286094830477323

See you shorly!

wafa_ath•5/26/24, 4:43 PM

Hey everyone,

I wanted to share something exciting I’ve been learning about recently Edge AI and its impact on embedded systems and IoT. Edge AI is the practice of running AI algorithms locally on embedded devices, rather than relying on cloud processing... Have any of you worked with Edge AI? What tools or applications have you used?

Wwafa_ath Hey everyone, I wanted to share something exciting I’ve been learning about rec...

Camila_99$$•5/26/24, 5:35 PM

Hey Wafa ! Good weekend everyone.
Your post about Edge AI caught my attention it's such an exciting field! I've been diving into it too, playing around with tools like TensorFlow Lite.

CCamila_99$$Hey Wafa ! Good weekend everyone. Your post about Edge AI caught my attention it...

wafa_ath•5/26/24, 6:18 PM

What projects have you worked on with it? Any tips?

Wwafa_ath Hey everyone, I wanted to share something exciting I’ve been learning about rec...

techielew•5/26/24, 6:25 PM

A while back Navadeep referenced SensiML. They've got a pretty handy SDK that walks you through the model development and selection process. More here: https://sensiml.com/

SensiMLChris Rogers

SensiML -Making Sensor Data Sensible

SensiML is the pioneer of software tools for compact AI processing on IoT endpoints. Build product worthy TinyML code for your IoT sensor app with SensiML.

Ttechielew A while back Navadeep referenced SensiML. They've got a pretty handy SDK that wa...

wafa_ath•5/26/24, 6:46 PM

ow ,i was just going to mention it , i acctually just start using it a few days ago , does anyone here have experience in it ?

techielew•5/26/24, 6:48 PM

I think @Navadeep may have used it. I did a review of it a while back with Chris Rogers. However it was years ago so a lot has probably changed since then.

techielew•5/26/24, 6:49 PM

https://www.youtube.com/watch?v=35AGY02zXPM

YouTubeEmbedded Computing Design

Embedded Toolbox: Knock Out Embedded AI & Machine Learning Developm...

So you’re an embedded or IoT developer, and there’s been an edict from on high that you need to start integrating AI into your design. And that’s about all you have to go on.

So where do you start? First of all, you’re not a machine learning aficionado or experienced data scientist. You’ve also been targeting resource-constrained embedded syste...

Ttechielew https://www.youtube.com/watch?v=35AGY02zXPM

wafa_ath•5/26/24, 7:03 PM

for now am just using the free trial and exploring it , but am curious about it ...

Marvee Amasi•5/27/24, 3:09 PM

I used to think that

low-power design

low-power design

is all about fancy hardware , but honestly Software plays a big role.
How is that ??
1. Put unused stuff to sleep

: Clock gating dims the lights on idle modules, while power gating cuts the power completely.
2. Smart task scheduling

: Try not to overwork your processor. Schedule your tasks efficiently and let it nap in low-power modes.
3. Tell peripherals to chill

:
Our Sensors and displays are energy hogs. Turn them off when you are not using them and configure them for power-saving modes also.
4. Code like a pro

: Choose efficient algorithms, use power-saving instructions, and eliminate unnecessary operations.

What are your software power-saving tips? Share let's learn