Using millis() to find out the sampling rate of arduino
Could anyone show me how to using millis function to find the sampling rate of my analog signal? Currently I'm recording PPG signal from analog circuit by arduino and using Python to store it in a txt...
View ArticleClik here to view.
BME AI Studio Config for Arduino Nicla Sense ME
Hi, I am trying to create a simple classifier (air, alcohol, coffee) with Nicla Sense ME with my own data. I followed this tutorial for the purpose: Hackster.io Use BME AI-Studio with BME688 on the...
View ArticleClik here to view.
DPI Display for arduino/esp32
Hi, i have 7inch display for raspberry pi, which has 50pin connector, which is connected to gpio trough this pcd As i understand this hat, uses RGB888 (aka 24bit) data bus to work with display. What i...
View ArticleHelp, my LCD changes contrast randomly!
Hello! I just bought an 16x2 non-I2C blue backlit LCD-display. Since 2 days I have had this problem, where the LCD would just glitch its contrast. At its max point, it runs okay, but in intermediary...
View ArticleSparkfun RGB LED Matrix Panel - 32x32 + arduino mega with a battery
Hey guys, I am very new to electronics so I need some guidance. I am following a guide from SparkFun to run their 32x32 LED panel with an Arduino Mega. Their tutorial covers the power supply to wall...
View ArticleAssigning 2 variables to a single operation
Hello, I'm trying to combine two variables to be assigned to a single operation. Below are the two variables that I want to combine. Incoming_value = Serial.read(); command = Serial.read(); Basically...
View ArticleMPU9250 library conflict with Wire.h library
When I run my code I get some weird output but the code stille compiles fine and uploads. I have lookt it up but I can't find anyone with the same problem. The code is from the mpu9250 library...
View ArticleClik here to view.
Measuring the tension in a cable
I am building a tendon-driven gripper for handling soft produce. It will comprise of three silicone fingers, each actuated via a tendon. The three tendons are all pulled by a single stepper motor and...
View ArticleArduino DUE with Control Surface
Hi everyone, im using an arduino due with the library "Control Surface" to control my music daw and i m trying to create a vu-meter, so my question is, how much tracks of my daw will an arduino due...
View ArticleReverse engineering LED display help needed. Where to look?
I'm interested in seeing if anyone has knowledge/experience with the pinouts on this 6" 7 segment LED display board. I could use it for a project if I could figure out whether it used a standardized...
View ArticleClik here to view.
LCD lights up without working
Hi, I'm sort of a Arduino noob. I've been working on a LCD for a while but it doesnt work. It lights up and i think that means its connected fine (i think) but it doesnt do what its supposed to. The...
View ArticleArduino API Connection Issues
Hey guys, im trying to connect my Arduino with an API but im stuck. I tried to install ArduinoBearSSL with Arduino Yun Rev 2 but i got following error: i tried asking ChatGPT The error message shows...
View ArticleHow to connect 140m LED strip?
Hello there, I plan to create quite a large project using approximately 140 meters of LEDs with a density of 60LEDs/m. I have done smaller projects of up to 5 meters, but this requires more thinking...
View ArticleHelp with ESPNOW and UART Serial Comms
This project is designed to monitor 10 Normally Open Inputs which are Pulled HIGH and if one or more of the inputs is pulled LOW to ground by a NO room occupancy sensor, then a Char String is sent via...
View ArticleClik here to view.
Camera and LCD modules for stm32h723 mini core development board
Hi, I purchased this STM32H723 mini core board that has 20 pin fpc connector for camera module and 10 pin fpc connector for LCD module. STM32H723ZGT6 Core Board Chip STM32 STM32H723 STM32H H723ZG...
View ArticleCan't load any code into Opta, Error Code 20
Hello! I'm trying to write to and read from two separate devices using Modbus RS485. I managed to setup complete communication with one of them, being able to read all the values from it I needed....
View ArticleClik here to view.
How to capture last tries in reflex game
I made a simple reflex game using Arduino where I have RGB diod and buttons with LCD display something like on this website : projecthub.arduino.cc A Simple Reflex Game A fun game to test your...
View ArticleClik here to view.
ESP32 CAM TO GOOGLE DRIVE FAILS CONNECTING TO script.google.com
Hii, i was working on a project of uploading image to google drive using esp32 cam. i am using esp32cam by AI-thinker with ov2640 module cam i was following this tutorial and it is failing while...
View ArticleFRAM memory size
I’ve recently been experimenting with FRAM memory. The chip that I got has 8MB although my ESP32 only sees 4MB. However, wen I run a sketch to find I2C devices, it comes back with 2 addresses for the...
View ArticleHuge Sketch, huge Problem (TimeLib, NTP-Time)
Hi I used this Original-Sketch to get the NTP-Time: /* * Time_NTP.pde * Example showing time sync to NTP time source * * Also shows how to handle DST automatically. * * This sketch uses the EtherCard...
View Article