Questions tagged [esp32]
For questions about the ESP32 series of microcontrollers. Use in conjunction with the "microcontroller" tag.
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How to control PA and LNA for FEM in custom RF module?
I am working on a custom RF module. This is my first experience. If you know of a book or resource on this subject, I would appreciate your guidance. So far I want to use an SOC with built in RF (ESP)....
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ESP32 S3 N16R8 custom board USB Port is not detecting
I am having a rough day because I made a custom board using the ESP32 S3 N16R8, but when I tested it, its USB-C port is not recognized by my laptop.
I am trying to troubleshoot an ESP32. The 3V3 pin ...
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Does this work -> MicroROS & Zephyr RTOS on ESP32?
I am working into Micro_ROS, and the only board lying around was an ESP32.
So I started with Zephyr RTOS. I was trying to build the demo app like ping pong for my esp board, but the CMake files say ...
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How to power RGB LED Strip with ESP32-S3 microcontroller on breadboard?
I am trying to use my ESP32-S3-DevKitC-1 microcontroller to power RGB addressable LEDs via the ESP-IDF 5.5 Command Prompt, but I am not able to power on the LEDs. I have tested the microcontroller ...
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Meaning of "High first-out"
I'm a beginner in embedded programing. I want to play with ESP32 and the DHT11 to read the temperature of a room.
The DHT11 Datasheet said:
DATA is used for communication between the microprocessor ...
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Problem with SF800 flow sensor reading
I am having a problem with my flowsensor circuit as show in the figure.
where SF800 is the flow sensor I am using. It's a pulse sensor PNP/NPN contact. Hence the pulse signal pin in pull up using a 2....
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CAN bus network compatibility issue with certain diagnostic scanners [closed]
I have a custom CAN bus network consisting of two nodes. The nodes are a MCP2515/TJA1050 boards which are powered by 5 V, and are driven by the SPI protocol at 3V3 from an ESP32.
When I connect a PLX ...
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Why does ESP32 smooth a 10us square wave?
I am generating a square wave using a CMOS chip running at 12 volts, the time period is 10us, I can see the square wave is perfect on the scope.
Now when the square wave is sent to ESP32 using a ...
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Tacho Simulator with ESP32 and IRFZ44N
I'm new to working with MOSFETs and PWM. My goal is to simulate the signal that the ECU sends to the car tachometer, to check if it is working properly in a bench environment.
The tachometer uses 3 ...
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Power delivery and USB data in HUSB238 type c controller
I'm designing a device that utilizes the Hynetek HUSB238 to control the type C usb connector that powers the whole thing. Now, I have a prototype that works well, but I'd like to use the same ...
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MCP4725 + MOSFET IV Curve Tracer for Solar Panel — Solar cell Voc stuck at 0.3 V under solar simulator
I am building a small IV curve tracer for a solar cell using:
Solar panel: 2.0 V, 130 mA, 4x4 cm
ESP32 WROOM32U
INA226 current/voltage monitor (0.1 Ω shunt, I2C)
MCP4725 DAC (I2C, 5 V supply, through ...
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Power and control a single WS2812S with 3.3V
I have a ESP32-C3 project, where I want to use a single WS2812S LED just for state indication. At the moment I only have 3.3V regulator and I would like to keep it like that, if it is possible. I know,...
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Appropriate approach of wiring [closed]
I'm trying to reproduce the AMT72 of Humans Since 1982. I have 18 modules, each module has 1 Arduino Nano, 4 BKA30D-R5C Stepper Motor, 8 DRV5032 Hall Effect Sensor, 2 AX1201728SG Quad-Driver, each ...
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In designing an ESP32-C3-WROOM dev board, how can I ensure that my board will be detected when I plug my USB-C cable in?
I have two ESP32-C3-WROOM dev boards of my own making. I plugged my USB-C cord in, but the ESP32 wasn't detected. I scoured the WROOM data sheet for answers.
I found on page 13 that while GPIO2 isn't ...
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What to use for switching low voltage/low current with 3.3V
I am designing a little battery (small 1 cell lipo) powered device which will use an ESP32 micro to do some wifi things. Most of the time the ESP32 will be in sleep, but occasionally it will wake up ...