Articles – Studiopieters

Projects 0.91-inch OLED Display on an ATtiny85 The ATtiny85 is a compact and low-power microcontroller ideal for minimalist electronics. Read more

Guides Guide to the HWFS-1 Anemometer A passive, cup-style wind speed sensor with a built-in voltage generator, no external power needed. This guide covers the analog output, wiring to an ESP32 ADC pin, and the calibration formula to convert voltage into km/h or m/s. Read more

Projects The ESP-WROOM-32 Programmer A development baseboard for the ESP-WROOM-32 module: labeled GPIO breakout, auto-reset circuitry, and dedicated BOOT/RESET buttons, so flashing firmware stops meaning jumper wires and a manual button dance. Read more

HomeKit HomeKit LED with an ESP32-WROOM-32E The ESP32 WROOM 32E is a versatile, powerful microcontroller ideal for smart LED projects. Want to control an LED using Apple’s Home app or Siri? No additional hub required! Just a compact board, a simple LED, and a USB cable. Read more

Projects The OMNIFIXO M4 A Swedish-engineered magnetic modular third hand: anodized aluminum base, four articulating arms, and neodymium magnetic feet, built for soldering fine-pitch components and holding small parts still on the bench. Read more

Guides MH-RD Raindrop Detection Module A low-cost rain sensor built from two boards: a copper-trace sensor plate and an LM393 comparator breakout. Covers the pinout, how the analog/digital outputs behave when the plate gets wet, and wiring it to an ESP32 or Arduino. Read more

HomeKit Guide to ESP32 HomeKit QR Codes An elegant tool to generate a full HomeKit pairing label, complete with a scannable QR code, setup code, MAC address and barcoded serials, so provisioning an ESP32 HomeKit accessory looks as polished as a real Apple-certified product. Read more