How can we help?
Stuck on a firmware problem? Start with Frenzy — it knows the entire LogicFrenzy tutorial library and can debug code with you in real time.
Frenzy AI Assistant
Paste your code, describe the problem, get a straight answer with working examples. Available 24/7, knows every tutorial on this site.
Hit the chat bubble at the bottom-right of any page →
Browse Tutorials
9 in-depth tutorials covering timers, GPIO, MQTT, FreeRTOS, OTA, Modbus, state machines, watchdogs, and event-driven firmware.
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hello@logicfrenzy.devCommon questions
Which ESP32 board should I start with?
The ESP32-DevKitC (38-pin) or any clone. Avoid ESP32-S2/S3/C3 until you're comfortable — most tutorial code targets the original dual-core ESP32.
Do I need PlatformIO or can I use Arduino IDE?
Arduino IDE 2 works fine for learning. PlatformIO is better for real projects — proper library management, multiple build configs, and a decent editor.
My MQTT messages are not sending — what's wrong?
Almost always setBufferSize() not called. Default is 256 bytes. Add mqtt.setBufferSize(512) after setServer(). See the MQTT tutorial for full debug steps.
Can I paste my code for Frenzy to review?
Yes — that's exactly what it's built for. Open the chat, paste the code block, describe what's wrong or what you want it to do.
Are the tutorials free?
All 9 tutorials and future tutorials are free. Pro (coming soon) adds unlimited Frenzy queries, code review, and early access to courses and books.
How do I report a bug in a tutorial?
Use the chat widget — tell Frenzy the tutorial name and what you think is wrong. We review every report.