1. D

    MODBUS_TCP RTOS Task

    Hi, i am trying to make MODBUS TCP SLAVE code based ESP32 platform. For modbus_TCP, I use this library: https://github.com/emelianov/modbus-esp8266 Plan is to have one dedicated task only for MODBUS_TCP. Please refer below extraction from compete code : void setup() { Serial.begin(9600)...
  2. T

    Advice on a project using microphone, speaker, HTTP APIs

    Hello, I'm looking for some advice on a project I'm doing and more specifically the best microcontroller to approach this. I've tried an approach already but reached a number of hurdles and need to return to square one. The project is a physical desktop intercom which takes only a power...
  3. T

    Struggling to understand the Espressif Open AI Chat GPT Library

    Hello, Working on an undergrad project and struggling to interpret the library built by espressif for ESP32 which makes using the Open AI APIs easier. There are some examples in the github for the chat element, but I am struggling to use the documentation to use the Audio Transcription and...
  4. TommasoB

    Custom Flight Controller Board design - Suggestions and Criticisms

    Hello community, My name is Tommaso Bugliesi and I am currently designing a custom flight controller board. It's not just one board, but rather two boards to be stacked on top of each other using rubber dampers. The hole spacing is 30.5mm, and the overall dimensions of the two boards is...
  5. Vilius_Zalenas

    ESP32 WROVER E not reaching the TCP host via Ethernet

    Hi, I am quite new to ESP32 programming. I have a task to establish the TCP communication via ESP and PC (PC wont send anything to the ESP, It will be one way communication from ESP to PC). I am using the ESP Ethernet KIT (ESP32 WROVER E) I took an existing basic ethernet example form the ESP...
  6. TommasoB

    ESP32 based Custom Flight Controller - Drones

    Hello, My name is Tommaso Bugliesi and I am a mechanical engineer currently engaged in the development of an open-source flight controller centered around the ESP32 chip. While this project is ambitious, I find myself encountering challenges in the realm of PCB design—an area where my expertise...
  7. Bradleydof

    PWM/DAC voltage and current regulation

    Hi, I'm new to this forum (and forums in general). I am starting my second year of engineering school (midlife career change) and have a problem I have been trying for figure out, on and off, for about a year. With an unregulated 35VDC input I am wanting to use a MCU (ESP32 specifically) to...
  8. MrNams

    How to replace PIC16F676 with Arduino/ESP32?

    Hello All, I have auto switch for 3 Phase DOL starter with current sensor (using CT) and is working fine, i.e. is sense current and stop motor if it takes more current, it stops motor one phase failure, it working as expected, i just want to control it using ESP32 so that I read values and send...
  9. MrNams

    ESP32 to control 3 Phase Submersible Pump

    Hello All, I am working on IOT based Smart Irrigation project. In first phase I shall work on controlling water pump, right now my 7.5hp motor is controlled by "3 phase star delta starter". Could you please provide/point to web source for following queries? 1) Three phase motor don't have...
  10. R

    ESP32-WROOM with SD Breakout

    Hi everyone. Experienced electronics engineer here but just starting to dip my toe into the Arduino world. Working on a small project that requires logging data to as SD card. I am using a ESP32-WROOM-32UE board: https://www.sparkfun.com/products/17381 I have wired this up (correctly I...
  11. Adamelli

    Attached to LED circuit, ESP32 does not boot up, I think. Detach from headers and re-attach, then it starts up fine.

    VXO7805-1000 DC to DC converter supplies 5V. When the circuit is attached via USB, there is a voltage drop to 4.5V on the 5V pin of the ESP32 (DevKitC-32D and pinout). I tried adding a 10uF capacitor between ground and EN (RST) as mentioned here. I then tried 330 uF. No luck. This seems to...
  12. chucrutcito

    [ESP32] Cannot run simple Bluetooth acceptor example

    I'm trying to run the Classic Bluetooth "acceptor" example: https://github.com/espressif/esp-idf/tree/master/examples/bluetooth/bluedroid/classic_bt/bt_spp_acceptor With the same sdkconfig configuration settings as the example I turn on the bluetooth in the phone. I select the ESP32 device...
  13. -live wire-

    DIY E-Scooter help - electronic breaking, pcb design

    Hi, I'm a rising freshman at Case Western University, and I would like to make an an electronic scooter to get around campus before I move in in about two months (mid august 2023). I already have a lot of the parts I would need for the project, like motors and motor controllers, among other...
  14. MrNams

    Can we make onboard antenna external?

    Hello, Sorry 1) if this is wrong place 2) Dumb question. I am working on smart irrigation project, I have Arduino connected with 4 sensors and 1 actuator, Arduino collect data and send to ESP32 using Reyax RYLR896 Lora Module connected to it. I keep all PCBs in one waterproof box, but this...
  15. S

    Connecting 6 push buttons with ESP32 with 1 common pin

    Hey all I have 6 buttons that have the following voltage: I want to hook up a 4N25 to each one of these so I can use the ESP32 as a "virtual push" to each of these buttons. When the button is pressed the 3.2vdc goes to ground. To minimize the amount of wire going to each one...
  16. mva007

    Help with two-way long-range wireless communication between two ESP32s

    My current setup involves sending-receiving few variable values, implemented using a struct variable, wirelessly between two ESP32s which are both physically present in the same room, using ESPNow. Each data is sent/rx at an interval of 15ms. This setup is working flawlessly for me. I'm also...
  17. Bhavik700

    Isolation requirement for Voltage measurement

    I am developing IoT device using ESP32. I am using ESP32 along with ADS1115 for voltage measurement of my equipment. My electrical device operates with following parameter : ~0-5 V DC , 25 Amp with constant current mode adjustment prior to operation. I want to measure this voltage change...
  18. memedin

    esp32 c3 rc522 df player mini there is a voltage drop in the circuit

    I want to play music from dfplayer mini with an rfid card reader. When I set up the circuit on the plate, I get a voltage drop, I don't know why, very meaningless ı use 5vto3v3 ams1117, entry 10uf exit 10uf and normally I was going to feed it with tp4056, I would switch my circuit with a...
  19. G

    SIM7600, ESP32 WROVER-E,LILYGO TTGO,ESP IDF, UART - SIM7600 JUST ECHOING WHAT I SENT IT

    I decided I would try my hand at programming an ESP32 using CLion instead of the Arduino IDE, so this project is running in the ESP IDF (toolchain?) and C language. I couldn't find the file for setting the settings, so all pins and settings are default - it would fill out the whole post if I...
  20. D

    Mems Microphone Array and ESP32, with or without codec IC?

    Hi I am planning to construct a mems microphone array with 4 to 5 microphones, such as SPH0690LM4H-1 Datasheet Rev A.docx (mouser.co.uk) These are PDM interfaced. If I have understood it correctly, these just require a CLK pulse, and I am reading digital databack. I have been advice by...
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