24,983 questions
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ESP32 - SIM7000G and TinyGSM response from server stuck/delayed with multipart/form-data POST request
I am experiencing a delay in receiving the HTTP POST request body when sending data over a TCP connection using the TinyGSM library with a SIM7000G and an ESP32 (LilyGo T-SIM7000G).
Below is my ...
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-1
votes
0
answers
23
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How do you install MAX3232-based RS232↔TTL converter? [closed]
I’m trying to use a MAX3232-based RS232↔TTL converter module (see image below). Unlike common MAX485 modules or other MAX3232 variants, this one doesn’t have through-holes on the ← and → TTL pads. The ...
- 99
0
votes
0
answers
13
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WeMos connection to SinricPro
I am using a WeMos Wifi ESP8266 with a DHT11 sensor to measure temperature and humidity in my house and send them to SinricPro. Alexa then reads from here and uses them to answer to the question "...
- 109
0
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0
answers
18
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Elegoo Uno R3 not showing up in dmesg or /dev/tty [closed]
I'm trying to learn how to write raw AVR C for the Arduino. I'm currently using the Ubuntu WSL on Windows to do this. However, I don't think my computer is recognizing the device. When I run
dmesg -w
...
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-1
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0
answers
22
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library recommendations for data encryption, [closed]
Does anyone have any library recommendations for data encryption, especially Ascon and AES cryptography?
1
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0
answers
47
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Arduino libraries in Atmel Studio, importing INO and building core for DUE
Is there a simple way to use the Arduino libraries in Atmel Studio 6 or 7? Already tried it with include path but thats a never-ending story. Looking for a precompiled .a file for the Arduino Due so I ...
- 11
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0
answers
25
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Sustain input current on the RTC pin of Arduino R4 WiFi [closed]
I need to use my Arduino R4 WiFi from time to time as a data logger, and of course I need to access the curent date and time.
So I'm wondering about the battery I need to connect to the dedicated RTC ...
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-1
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0
answers
17
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Arduino can't see any library I have installed for nrf24l01? [closed]
Compilation error: nRF24L01.h: No such file or directory
0
votes
1
answer
20
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Receiving data on ESP32-Cam from Raspberry PI
My use case is an esp32-cam that serves two purposes:
HTTP feed (accessed by a Raspberry Pi 5 which processes stream and provides a response)
Servo Motor microcontroller: Receives response from ...
- 51
0
votes
2
answers
50
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How do I read data from a 32 bit I2C register address?
I'm having trouble reading the I2C data from the CPS8200, that has a 32 bit Register Address. Since I'm not too familiar with I2C register addresses more than 8 bits, and right now I'm not sure if I'm ...
- 109
-2
votes
0
answers
12
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sending data from nodemcu to google sheet? [closed]
I need a simple script for google sheet to read integer data from node mcu and code for node mcu to send data to google sheet along with date and Time
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0
answers
44
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Maximum servo issue in quadruped spider robot [closed]
I have been buidling a quadruped spider robot with nrf24l01 module as transciever. In addition to it, I wanted to attach another servo (13th one) for a turret mechanism so that I can shoot out bullets....
- 39
0
votes
1
answer
31
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Compiling issues with included library MX1508 for Billy Bass build
Thank you for considering my question.
I have been learning Arduino so I can teach coding basics to my son. I came across a fun project to interface bluetooth with an old singing Billy Bass so he can ...
1
vote
1
answer
256
views
How to implement a pulse counter for two clocks on Nano Every?
For clock synchronization I want to implement a pulse counter on the Arduino Nano Every. There are two clock signals at 40-100 kHz, the Nano runs on 20 MHz. Nyquist says we need at least 2 times the ...
- 111
-1
votes
0
answers
37
views
What microcontroller should I use for my project? [closed]
I recently received a box of random hardware modules as a present and recently decided to make a joystick for flight simulators with the included potentiameter joystick (2 axis four pin) and button. I ...
- 9
-2
votes
0
answers
39
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Control issue Self Balancing Robot
I have been building a self balancing robot with my daughter, but I have become stuck when I connect to the bluetooth via my Android.
I can connect to the bluetooth but I do not have any control.
I'm ...
- 1
1
vote
1
answer
47
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Generate all frequencies between 5 and 8 kHz in steps of 1Hz
Is it possible generate all frequencies between 5000 and 8000Hz, 1Hz in between with an ATmega328?
When I create a c-program outside the Arduino IDE to calculate the frequencies with the formula ...
- 131
0
votes
1
answer
64
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New Freak UI @Arduino IDE v2.3.6 - 2025/05/21
This shXt stop after I turn off the power, and bring Notebook back to home. @@"?
No any configuratin changed, just power NB off and on.
How this shXt happened, and how it solved !? No idea...
...
- 11
0
votes
1
answer
51
views
Stepper motor not moving
this is my second Arduino project and I am trying to figure out why my stepper motor is not moving. I was able to get a basic 28byj-48 stepper motor to work using stepper.h and some sample code.
Now I ...
- 109
0
votes
1
answer
39
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I've looked at the spec sheet on the ESP8266, but can't find the time it takes for the A/D conversion or the A/D control registers
text or link to describe the answer or a link to where to find the answer. I am a newbie to the esp8266.
1
vote
0
answers
32
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Can't get ESP32C6 to work in PlatformIO. Error is "unsupported ISA substring '_zicsr_zifencei'"
I bought a few Waveshare ESP32C6 Touch LCD 1.47 boards and have had a hell of a time trying to get my sketch uploaded. I somewhat understand that PIO doesn't support esp32c6 because:
The ESP32 Core ...
- 11
0
votes
0
answers
26
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Circuit Playground Express (CPX) + Crickit + I2C sensors
I have a Circuit Playground Express (CPX) mounted on a Crickit. I want to control two air pumps using the motor output on the Crickit, but also connect two Adafruit SCD41 sensors using I2C.
When I ...
- 9
-3
votes
0
answers
29
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Arduino R4 WiFi Debugger Hardware or Software
new user on the Arduino R4 WiFi I'm testing important tools such as the Debugger which is hardware based by using the on board ESP32.
I understood that I have to configure the "system" with ...
- 27
0
votes
2
answers
73
views
LED Matrix for Arduino R4 Wi-Fi specific functions
I'm searching for the path and the source code for the builtin (I think) function, name is: renderBitmap().
This function appears as a member of the ArduinoLEDMatrix class but its name doesn't appear ...
- 27
-1
votes
0
answers
45
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Task switching does not work when holding down a button in a program built in CoIDE [closed]
This program builds in CoIDE. Task switching does not work. When holding down the button, the task should switch, that is, 3 LEDs were lit first (when pressed, they turned off and turned on again). ...
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-1
votes
1
answer
54
views
Reasons for an ATmega328P Nano SuperMini USB-C board not being recognized by a PC/Mac? [closed]
I recently got two of these ATmega328P Nano SuperMini USB-C boards but none of them is being recognized by my PC or Mac.
I'm using the old bootloader setting in the Arduino IDE 2.3.6, CH340 drivers ...
- 75
0
votes
1
answer
32
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How do I reinstall Arduino IDE 1.8.12 to correct corruption, without losing all of my libraries and board installations?
I have been told to reinstall my Arduino IDE Ver: 1.8.12 to correct some corruption with my current installation.
loading hardware from C:\Users\Paul\AppData\Local\Arduino15\packages: loading package ...
- 21
1
vote
1
answer
53
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Arduino Nano ADC input selection
The maximum ADC sample rate for the '328p, using the default prescaler of 128, is given as roughly 10000 samples per second. Maybe I've missed it, but I can't see whether that is the total rate for ...
- 269
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0
answers
29
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ESP32 and Fingerprint Sensor – Serial Monitor Shows Nothing
I'm trying to connect a fingerprint sensor (Adafruit type) to my ESP32 (DOIT ESP32 Devkit V1), but the Serial Monitor remains completely blank, even though I'm using Serial.begin(9600) and printing ...
- 11
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0
answers
31
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How to get relative orientation from MPU6050 without a fixed "up" direction (wand project)?
I'm working on a project using an MPU6050 connected to an ESP32 DevKit V1. The idea is to use it inside a wand, where the user can freely rotate it in their hand — meaning the wand has no fixed "...
