Arduino
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Fix arduino_event_wifi_sta_got_ip esp32 Core v3 Bugs
The Midnight Debugging Session While debugging a remote telemetry project last month, I encountered the arduino_event_wifi_sta_got_ip esp32 event issue that has tripped up many IoT developers. My solar-powered weather station was supposed to wake up, connect to the local access point, transmit sensor payloads, and immediately return to deep sleep. Instead, the controller hung in…
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Esp32 Arduino Wifi Password Legal Characters: What Actually Works
An ESP32 Arduino WiFi password legal characters can still leave your board stuck blinking “connecting…” forever, and I learned that the hard way on a weather station build that sat on my desk for two days before I figured out the problem was one apostrophe. The router accepted that password without a complaint. My phone…
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How to Create a Base64 Encoded String in Arduino JSON Without Crashes
Are you trying to figure out how to create a base64 encoded string in arduino json so you can safely transmit binary data, images, or sensor payloads over a lightweight HTTP POST request? It is a common challenge because Arduino’s constrained memory architecture makes handling raw binary arrays inside a JSON document highly prone to…
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Arduino ESP-NETIF: Static IP Setup That Actually Works
Arduino esp-netif calls saved one of my recent ESP32 projects after WiFi.config() quietly ignored the static IP I kept feeding it. If you have ever set a static address in the Arduino sketch, uploaded it, and watched the board grab a random DHCP lease anyway, you already know the frustration I am talking about. That…
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192.168.4.1: What It Means for Your ESP32 or Arduino Project
192.168.4.1. That string of numbers showed up on my serial monitor the first time I ever wired up an ESP32, right after the line “AP IP address,” and I had no clue what to do with it. I typed it into my phone’s browser like it was a website and just stared at the loading…
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How to Use an Earphone Part with Arduino Sound Sensor for Arduino (Wiring + Code)
Using an earphone part with Arduino is one of the cheapest ways to build a sound sensor, since you’re reusing a microphone that’s already sitting in your junk drawer instead of ordering a module. It works, but it’s finicky, and nobody tells you that part upfront. I found that out the hard way. My first…
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Arduino IDE 2.3.6 and Setup: Step-by-Step Installation Guide 2026
Getting started with Arduino programming just got easier with the Arduino IDE 2.3.6 and Setup process. This complete installation guide walks you through everything you need to know to get your development environment running smoothly in 2026. This guide is suitable for beginners, makers, and developers upgrading to the latest IDE. Follow explicit instructions, whether…
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Robot Dog for Adults: The Honest 2026 Buying Guide
Last Updated: August 17, 2026 Author Note: Written by the arduinocraft.com team after building and testing a homemade Arduino based robot dog over several weeks, alongside research into consumer robot pet options currently on the market. A robot dog for adults sat on my workbench for three days before I admitted defeat and ordered one…
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Robotics Funding News: Key Investments Shaping the Future
The landscape of American industry is changing fast, and if you follow the money, you’ll see the direction we’re headed. Robotics funding news from Silicon Valley, Austin, and the industrial Midwest is nothing short of breathtaking. This isn’t just a few million for experimental gadgets; it’s a massive reallocation of global capital toward “Physical AI.”…
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Error Could Not Create the Java Virtual Machine: 7 Easy Fixes That Actually Work
If you’ve ever run a Java program and seen “Error could not create the Java Virtual Machine,” you’re not alone. This vague message appears in many Java apps, from Minecraft to Eclipse to the Arduino IDE, and means Java failed to start its engine (the JVM). Java couldn’t launch its virtual machine, so your program…
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