Category: Mcu
Tiny Graphics Library for ATtiny85 and SH1106 OLED Display
David Johnson-Davies published another great tutorial on how to use the Tiny Graphics Library to plot the outside temperature over 24 hours on a 128x64 OLED display using an ATtiny85. This small graphics library provides point, line, and character plotting commands for use with an I2C...
Continue ReadingTrill – an open-source 3G mobile phone
This is a complete GSM/3G mobile phone, based on the ioNode. Features 128 x 64 OLED display * 16 buttons + 5-way mini-joystick * Microphone & earpiece * MicroSD card slot * MicroSIM card slot * MP3 decoder, headphone amplifier and 3.5mm stereo jack * Vibrator Trill - an...
Continue ReadingFirefly – an annoying little thing
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...
Continue ReadingSTMicroelectronics Introduces STM32WB – A SoC With 32bit Microcontroller And Bluetooth Low Energy 5
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...
Continue ReadingATtiny85 Tiny Function Generator
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...
Continue ReadingInfrared repeater using AVR mcu
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...
Continue ReadingATtiny85 runs at 0.000011574Hz clock
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 -...
Continue ReadingWriting to flash and EEPROM on the tinyAVR 1-series
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...
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