ESP32 Wi-Fi Signal Traffic Light: Find the Weak Spots
Build an ESP32 Wi-Fi signal indicator with three LEDs. Understand RSSI, choose thresholds and handle missing networks with a complete Arduino sketch.
Category: Integrated Circuits
Complex circuits inside a single package.
ATtiny85 Reaction Timer: A Two-LED Pocket Game
Build an ATtiny85 reaction game with two LEDs and a button. Learn timer interrupts, debounce and state machines with complete C firmware.
ESP32 Smart Room: Motion, Light and Temperature Explained
Build an ESP32 smart-room prototype with PIR motion, an LDR and DS18B20 temperature sensing. Includes wiring, MicroPython code and calibration.
๐ TP4056: The Ultimate Guide
“Everything you need to know about charging lithium batteries without accidentally burning down your house.” ๐ง What is TP4056? TP4056 is a popular linear battery …
Arduino + BLE: A Beginner’s Guide to Wireless HID Control
Introduction Bluetooth Low Energy (BLE) is a low-power wireless communication protocol that’s ideal for simple peripherals like sensors, buttons, or human interface devices (HIDs). Many …
BLE Swipe and HID Input with Raspberry Pi Pico W
Overview The Raspberry Pi Pico W, while not having native Bluetooth hardware, opens the door to BLE functionality when paired with additional hardware like an …
BLE Swipe Input via ESP32: A Cross-Platform Guide
Overview Using an ESP32 as a Bluetooth Low Energy (BLE) Human Interface Device (HID) opens up creative options for remote control, including emulating mouse swipes …
Wiring tips to ensure your ATtiny (13/25/45/85) runs reliably in any project. ๐คโก
โ Must-Have Components for Stable Operation Component Purpose ATtiny MCU The brains of your project ๐ง Power Supply (3.3V or 5V) Stable voltage source from …
Simulating dice throwing on ATtiny
๐ง GOAL: ๐ง HOW DOES IT WORK? Instead of controlling each LED separately, we treat each number (1โ6) as a predefined pattern, and reuse the …
๐ Overview of the STC15 Series
The STC15 series is a family of 8051-core microcontrollers from STC Micro (ๅฎๆถ็งๆ) with significant upgrades over the original 8051 design: ๐ฆ Most Common STC15 …