Category: Mcu

Here's a tiny pcb that produces an annoying sound using a piezo buzzer and a ATtiny13 microcontroller. It uses an LED, piezo buzzer, ATTINY13 Atmel microcontroller, a very small amount of Arduino code, and a coin cell battery that should last about a week. Battery life could be...

The new STM32WB from STMicroelectronics is a new wireless supporting System on a chip (SoC) that comes with a fully-featured ARM Cortex-M4 (@ 64 MHz) based microcontroller to run the main computing processes. It also has an ARM Cortex-M0+ core (@ 32 MHz) to offload the main processor and...

David Johnson-Davies build a tiny function generator based on ATtiny85 microcontroller. He writes: This article describes a simple function generator based on an ATtiny85. It can generate triangle, sawtooth, square, and rectangular waves, a pulse train, and noise. The frequency can be...

Madis Kaal @ nomad.ee designed a infrared repeater based on ATMEL AVR + TSOP1738 infrared receiver. He writes: I built this MCU based infrared repeater to allow me to control my A/V equipment that is behind a wall. The system is very simple. Power is supplied to CON1 from a cheap...

What is the lowest possible clock frequency at which a microcontroller can still do useful work? Here’s a little project that attempts to explore this weird question. by igendel @ idogendel.com: ATtiny85 runs at 0.000011574Hz clock -...

Update your tinyAVR code to access memories when using 1-series tinyAVRs. Link here (PDF) On tinyAVR® 1-series devices, access to Flash memory and EEPROM has been changed from that on previous tinyAVR devices. This means that existing code for writing to Flash and EEPROM on older...

Creating projects with Arduino can be challenging for kids, this may cause children to lose interest in electronics and DIY projects. The most complicated part is usually the connections required to use a sensor, led matrix or other devices that can be connected to the Arduino (or other...

MATRIX Voice is a"Voice Recognition" development board, designed for the Raspberry Pi or Stand-alone with ESP32 (WiFi/BT/MCU) MATRIX Voice is an open-source VOICE RECOGNITION platform consisting of a 3.14-inches in diameter dev board, with a radial array of 7 MEMS microphones connected...