Help Arduino Compilation error: expected initializer before '.' token. Can...
#include <millisDelay.h> int signal = 7; int valve = 8; millisDelay valveDelay; int start = 0; void setup() { pinMode(signal, INPUT); pinMode(valve, OUTPUT); digitalWrite(valve, LOW);...
View ArticleNema 14 Stepper motor
Hi everybody, I recently purchased a linear actuator, the FUYU FSL30 model with a 200 mm stroke, for my final project. This actuator is based on a NEMA 14 stepper motor. The purpose of the linear...
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Using BME688 sensor with an ESP32 board
Hello, I'm trying to use a BME688 sensor on an ESP32 board. The board itself is an Adafruit Feather V2 HUZZAH32 ESP32. I'm using the Arduino IDE 2.3.2 and have selected "Adafruit ESP32 Feather" as my...
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Feedback on PCB Design
Hi all! I am new to PCB design. I am currently working on a project that interfaces 64x64 sensors with the Arduino. The sensors are connected to two 32:1 multiplexers for each row and column. And the...
View ArticleArduino ESP32 nano and MCP2515 Shield not working
Hello everyone. My project is to make BMW Wonder Wheel control Phone and Music as BLE HID Keyboard. But got a problem with MCP2515 Shield with ESP32 nano, bootloop, periodic rebooting and nothing in...
View ArticleHow to run an SG90 servo using 2 Li-Po 3.7v Batteries
I was trying to run a SG90 servo using 2 Li-Po 3.7v Batteries connected serially. But it won't work. When I try to run it using an ESP8266 through vin pin, it works! why can't it work on 7.14v...
View ArticleESP32-Exception was unhandled
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View ArticleVoice recognition module V3 error
I have connect VR module with my Arduino mega 2560 and uploaded the vr train code. But as I train and load the commands it's showing the record is untrained ,even after clearing all the command and...
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ESP32 running ESPUI strange: sending UDP works, ping works not + website...
Hi Everybody, I have a real strange phenomen with a ESP32 running ESPUI and sending UDP-messages. After some time the website build with the ESPUI-library is no longer reachable. Browser says "website...
View ArticleMKR compiles but cant finish upload after adding one more global variable
Hi all, I am using a MKRWIFI1010 board. I have a lot of global variables (>100) in my code, flash memory sits around 40% and RAM (Global variables use 9900 bytes ) sits around 30%, so that should...
View ArticleDo I need a serial converter for RS232 Arduino TX/RX
I have a solar inverter that has a Female RS232 port. Using a normal RS232 to USB serial Cable with either a CH340 chip or CP210 chip works perfectly fine on a raspberry pi. This confirms that the...
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LoRa Ra-02 RX receiving random characters, or nothing at all
Hello everyone! I am fairly new to Arduino and we are doing a project with the use of LoRa Ra-02 to send and receive specific characters in order for the device to work. The thing is when the sender...
View ArticleHow to detect an RFID card continously?
Hi. Trying to learn my self Arduino and it is an absolute blast! Anyhow, I am fooling around with Balboas RC522 and I have actuall on general and one very specific question. General : I understand...
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PWM signal noise on ESP32
I communicate between 2 ESP32s by outputting and receiving PWM signals using 2 commands ledcWrite and pulseIn. Everything works quite well, however, on the same ESP32 when I output a pulse value on...
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TMC2130 v3 as standalone pulse generator
Dear Community, I'm trying to use the TMC2130 v3 stepper driver to generate step pulses itself, w/o sending step/dir commands, offloading the MCU. My HW conf is arduino mega r3 with RAMPS 1.4 shield...
View ArticleUno, motor shield with qtr sensor and hc-06bluetooth
Hey, I tried to build robot that have 2 function PID control and HC-06 bluetooth control. I build it in separated task. Both work fine but I tried to combine PID control and HC-06 bluetooth control...
View ArticleLimitations of ESP32 Wroom Dev Kit
Hello Community , I want to communicate using HTTP protocol (Here , I am using ESP32 DEV KIT Wroom module). I am not able to achieve this with the basic model (Esp 32 Dev kit). But the same thing...
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Continuously sending data to the Arduino cloud
Hello all ! I want to send, via a Python script, the value of the Safran stock retrieved from the Boursorama website to the Arduino Cloud. I managed to code the script below, but the sending only...
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Issues with a MPU6050 and Servo
Hi, i'm having troubles with a school project and I'm pretty amateur with programming and electronics. Basically, I'm developing the control system for an experimental aircraft, and I need to control...
View ArticleArduino support - controller & switch for sound installation
Hi there! Moving this from the incorrect forum.. (Thank you Hammy!) I am looking to hire someone in the LA area to help me program a sensor/controller for an interactive sound artwork. The goal is to...
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