Questions tagged [esp32]
For questions regarding the programming and use of the ESP32 range of microcontrollers from Expressif Systems.
2
votes
0answers
36 views
Simple NAT implementation on ESP32
I have an ESP32 wroom32 that has WiFi internally and an ethernet port. I want to be able to connect my phone to the WiFi and access a webserver running on the ethernet port. Schematically this looks ...
1
vote
1answer
33 views
ESP WROOM32- 8 channel relay board confused for which are pins to be use for connect relay
I am new to ESP32, and I had do the same project with Arduino and it's working fine, now I am trying the same project to control 8 channel relays with an ESP32 Wroom 32, but I am not able to choose ...
1
vote
1answer
80 views
ESP32 video recording to SD card [closed]
So I'm trying to record a video to SD card using ESP32 with ov7670 but I don't know how to transmit pictures that are taken periodically by the camera to SD card, in a video format. I will later ...
3
votes
0answers
49 views
Lua for ESP32: How to obtain time from an NTP server or from time.is or?
I'm working with Lua on the ESP32. I see that contrary to the Lua implementation for the ESP8266, there is no NTP module (correct me if I am wrong).
I have been looking at the net library, but am too ...
2
votes
1answer
157 views
Can I use MatLab code in esp32?
We've some method to run the MatLab code in esp8266 microcontroller. We can manipulate Arduino pins using Simulink in MatLab.
Can we do the same with an esp32 microcontroller as their code can be ...
1
vote
0answers
132 views
Read data from STM32 using UART ESP32 micropython \x00 error?
I am using a LOLIN32 lite (ESP32) to read data sent from a STM32F103 (black pill). The ESP32 is using micropython and the STM32 is programmed using CubeMX + Truestudio.
When calling the uart.read() ...
1
vote
0answers
64 views
Control GPIO of ESP32 using Bluetooth [closed]
I’m using ESP32 to control relays using MQTT ( both over Arduino and MicroPython ).
For special cases, and not for everyday operation, I wish to control a specific GPIO over Bluetooth ( a reset irq)....
1
vote
0answers
124 views
ESP32: no signal output on I2C bus [closed]
I have an ESP-WROOM-32 (I2C master) and an ATmega328p (I2C slave, address 0x03) assembled on a prototype pcb using external 6k8 pullups.
I'm using the ESP's default I2C pins 21 (SDA) and 22 (SCL) as I ...
0
votes
0answers
60 views
ESP32 - using 3.3V Dual relay
I have an issue- which I guess is has some power issue.
I'm using ESP32 and a 3.3v Dual relay.
My code is simple ( switch up and switch down ), and works fine.
The thing is that when all wires are ...
1
vote
2answers
504 views
Number of GPIO pins in esp32 [closed]
I would like to connect sensors with digital signals to ESP32. But I do not know how many pins can be used on ESP32 board for sensors. How many pins are there in ESP32 which can be used for connecting ...
1
vote
0answers
454 views
ESP32 - 5V output to operate a Relay
I'm playing around with a new ESP32 flashed with Micropython from eBay in order to replace a Rpi Zero W. Am I missing the 5v output? I need it to operate a Relay.
Can a 5vDC Relay be operated as ...
3
votes
0answers
46 views
Fail executing RSHELL to acess ESP32 using Micropython
An ESP32 was flashed with micropython, using esptool on Linux system ( Ubuntu 18.04 ). When I tried to runrshell after installing it, it seemed as it start executing, but did'nt reach to login part - ...
5
votes
1answer
126 views
S3 Actions from ActiveMQ (IoT Core)
I am working on a code for ESP32 which needs to transfers data that is sent via MQTT to AWS S3 storage.
Can Someone help me out on how I can achieve this ?
I have setup the the client and AWS broker ...
2
votes
1answer
201 views
Data from ESP32 to AWS S3
Can someone here help me out with code to send data from esp32 to aws s3 storage ?
I am using esp-idf as I have other code running on the esp32 as well.
I am new to aws so any help would be good.
10
votes
1answer
93 views
Need Suggestion HD Camera to be integrated with Wifi module
I am working on one of my IoT project which needs to wide angle HD camera modules to integrated with Wifi Modules (open to Raspberry Pi, NodeMCU or anything else).
I have checked various options but ...
3
votes
0answers
324 views
Websockets with Mongoose on ESP-IDF
I'm trying to use the websocket_chat_client example on ESP-IDF platform but the value of status on MG_EV_CONNECT event is always -1, which is a Connection error. What I've done so far is I took the ...
6
votes
1answer
49 views
How can I write bytes to BH1750 via line buffer IC (ESP32)?
I want to switch data reading from multiple sensors by line buffer IC (74F244).
My problem is I can't read anything from sensor when I connect via IC but can when connect sensor to ESP32 directly. I ...
1
vote
0answers
39 views
How can I get the sketch going that came with my TTDO LoRa oled esp32? [closed]
I got this device:
https://www.aliexpress.com/item/1-Pcs-TTGO-LORA32-V2-0-433-868Mhz-ESP32-LoRa-OLED-0-96-Inch-Blue-Display/32847499968.html?spm=a2g0s.9042311.0.0.MnBocO
It came installed with a ...
2
votes
0answers
264 views
Booting up ESP32 normally [closed]
I have an ESP32 chip, not the DevBoard, but the chip only, this one. https://www.olimex.com/Products/IoT/ESP32-WROOM-32/images/ESP32-WROOM32-1.jpg
I have a burn board which I use to flash the ESP32, ...
7
votes
1answer
773 views
ESP32 - How to enable options in PlatformIO
For the ESP32 options are normally enabled with "make menuconfig".
PlatformIO with Atom also allows to create ESP32 projects with an empty source folder. It automatically installs an ESP-IDF 0.11.
I ...
10
votes
2answers
586 views
802.11 action frames send and receive in software
Is it possible to gain access to 802.11 action frames TX/RX from software? There's a proprietary protocol based on vendor-specific action frames called ESP-NOW for ESP8266 and ESP32 chips, and I'd ...
2
votes
0answers
307 views
ESP32 & Bluetooth
I'm currently looking into how to set up a sense network made from ESP32s to track BLE tokens in an area, but I'm stuck at the first step... Getting Bluetooth & device listing to work on the ESP32,...
0
votes
1answer
69 views
How can I set up ESP3212 after unpacking? [closed]
Do I need to flash/burn some firmware?Is there a dedicated github page/website?
14
votes
2answers
4k views
Working with Rust on the ESP32
I would like to build a gateway device which will use the ESP32. This should connect to the ModBus TCP port of a Sensor. For this purpose, I would like to use the Modbus Rust implementation, which ...
