Blog

Arduino Uno Q and DIYables 3.5in color TFT Display

rsc

The Arduino Uno Q is a very powerful and feature rich device, however, some features are tricky to implement, TFT displays and SD cards included. It took me a few days to determine what libraries to use to get my TFT display to work. This is the disp...
- 21 Jan 2026
Arduino Uno Q: Drive MCU pins directly from MPU

misaz

Arduino Uno Q is interesting (one would say weird) board with 2 chips: MCU and MPU. Disadvantage is that pins are always connected to only one of these, so you can’t control them from another chip. Most importantly, pins on headers are connecte...
- 17 Jan 2026
More eyes on, to explain why

colporteur

I trying to determine why the LED's on Pin 7 & 4 do not glow as bright as the pins on 5 & 2. The nano circuit is for the two floor elevator project Going Down anyone . I've generated a PCB and during testing, the LED for the botto...
- 3 Aug 2025
Arduino Analog Input scaling

robogary

Working on a project using analog inputs for temperature feedback. The Arduino code and calcs all looked OK, but the displayed values of temperature (on an SSD1315 OLED) were off by 5-10F. The working temperature range used analog feedback of 5...
- 19 Mar 2025
Arduino Portenta H7 is the best for MicroROS

Dabakama_Mindset

Overview The Portenta H7 is part of Arduino's Pro series and stands out as one of the most powerful microcontrollers on the market. This is due to its STM32H7 dual-core processor, onboard wireless module supporting Wi-Fi and Bluetooth, and ...
- 5 Mar 2025
Arduino releases "Arduino UNO Ek R4" exclusively Made-in-India

balajivan1995

Coinciding with the Republic Day of India (26th of Jan), Arduino has announced the launch of "Arduino UNO एक (Ek) R4 Minima" & "Arduino UNO एक (Ek) R4 WiFi" under “Make in India&rdqu...
- 26 Jan 2025
Request for Guidance on Automated Irrigation System for Remote Greenhouse Project

Maral

I am reaching out to gather insights and advice on a project I am currently working on, which involves setting up an automated irrigation system for a small-scale greenhouse located in a remote area. Due to the greenhouse's location (3-4 hours aw...
- 17 Nov 2024
Getting Started With T-Display S3 Long

meera_hussien

Getting Started With Lilygo T-Display S3 Long In this video tutorial, I am sharing how to get started with T-Display S3 Long using the example files. https://youtu.be/k5n-MksjCzE
- 1 Oct 2024
Interfacing a Soil Moisture Sensor with Arduino Nano

rachna34

In this article, we'll explore how to interface a soil moisture sensor with an Arduino Nano, enabling you to create a simple yet effective soil moisture monitoring system. What is a Soil Moisture Sensor? A soil moisture sensor is an electronic device...
- 13 Aug 2024
PHD ULTRA syringe pump communicate with Arduino

Zainii

I have a PHD ULTRA syringe pump from Harvard Apparatus. I want to establish communication between an Arduino and the syringe pump. The company provided me with a Python code, but Arduino does not support Python. Therefore, I converted this code to C+...
- 27 Jul 2024
DIY spot welder stopped working

Rowbow68

Hello, I recently started putting together a diy spot welder made from microwave oven transformer and while I was waiting for some parts to be delivered I pretty much had the spot welder working and ready to put in the case I was going to use. So the...
- 15 Jun 2024
NeoPixel Portenta Implementation

MSchmidtty

Having researched for a way to control NeoPixels with a Arduino Portenta I was surprised how much information there was available yet nobody had yet created a working library. I spent the past few days getting this working myself so I wanted to provi...
- 5 Mar 2024
Arduino UNO R4 Minima - Troubleshooting "Unknown USB Device (Device Descriptor Request Failed)"

javagoza

In July I received an Arduino UNO R4 minima development board and an Arduino UNO R4 WIFI sent by Arduino thanks to tariq.ahmad from project14. I tried them, I did a small project with the WIFI version, Arduino UNO R4 WI...
- 26 Sep 2023
Using DC Motors, Reliably, with an Arduino

shabaz

Table of Contents Introduction Specifications Building It Circuit Diagram Connections Arduino Setup Summary Introduction A while back, I experimented with quite nice “H450” motor driver modules (see Using H450 (Toshiba TB67...
- 15 Sep 2023
Mini CNC machine Arduino Based & Adafruit Driver Motor L293D v1 & 2*Mini Stepper CD/DVD player

samiboutgoulla

Hello everyone, I'm trying to make a small dvd-based cnc machine that contains two small stepper motors, but in each video on youtube the height between x and y is not specified, here are the links some video to understand if someone has an idea ...
- 3 Aug 2023
Arduino Oplà IoT Kit - a Quick Look

dougw

I received an Arduino Oplà IoT Kit as a mystery prize in the Save the Bees Design Challenge. This is a quick look at it and what it can do.... Oplà seems to be a village near Milan or a bar in Milan or a restaurant. https://youtu.b...
- 31 Jul 2023
Testing Sensors on the Arduino Uno R4

fmilburn

I've been going through my parts collection to see what sensors I have that might be easily used with the Uno R4 that element14 and Arduino were kind enough to send me. I was surprised at how much I had readily available. I did a RoadTest o...
- 30 Jul 2023
Trying out the new Arduino R4

ntewinkel

The good folks at element14 sent me a set of the new Arduino Uno R4 boards to play with, and today I finally had some time to try them out (hooray for the rainy day!). When you first power up the R4 WiFi, it does a neat little startup animation on th...
- 25 Jul 2023
Celebrating E14 deliveries * more Christmas in July 2023 *

robogary

A Big celebration at RoboGary's house www.youtube.com/watch Thank you E14 and tariq.ahmad A Nicla Vision prize from a previous webinar, and a Arduino UNO R4 MINIMA and an Arduino UNO R4 wifi. *See the last photo*, it was an une...
- 3 Jul 2023
What would be your bare minimum on a Nano project PCB?

colporteur

I’ve purchased the Arduino Nano holders above in the past for projects. I have gone one step further and created PCB’s to hold a Nano and a JQ6500 sound module. I can share the KiCAD files if someone is interested. I reluctant to post t...
- 8 May 2023
Sending data from ESP32 [Arduino] to Node-RED and storing to InfluxDB using WebSocket

oksbwn

MQTT is a widely used protocol in IoT space, with low overhead and targeted towards constrained devices. However they are not real time and full-duplex. and when that is needed WebSocket can be an alternative. Moreover WebSocket can take more payload...
- 1 Apr 2023
Introducing the Arduino Giga R1 WiFi!

tariq.ahmad

In the Comments Below: Let Us Know What You Think About the Arduino Giga R1 WiFi! players.brightcove.net/.../index.html The Arduino Giga R1 WiFi offers all the power of the STM32H7 in the accessible Mega form factor. The STM32H7 is the sa...
- 28 Feb 2023
Tiny GNSS Module Interfacing With Microcontrollers

vinayyn

Interfacing ultra-low power REYAX RYS8830 GNSS Module with Microcontroller. while working with Tracking devices we need GPS Or GNSS receivers to get the geolocation details. These receivers must be precise by consuming low power,...
- 26 Dec 2022
Grove Light Sensor Test

ralphjy

I'm working on a Hack the Holidays project where I need to add an ambient light sensor to a Seeed Xiao BLE to control the brightness of Neopixel LEDs. I decided to test the sensor on another Xiao (SAMD21) before trying to use it in the proj...
- 25 Dec 2022
MicroPython officially becomes part of the Arduino ecosystem

ralphjy

I just noticed this on the official arduino blog - Micropython Officially Becomes Part of the Arduino Ecosystem. I've used OpenMV with my Potenta H7 and Nicla Vision, so it's nice to see that Arduino is going to support Micropython in th...
- 19 Nov 2022