Holiday tunes from Attiny13 and SPI Flash

In clearing up the year-end mail, we noted this from Vinod sharing one of his recent hobby projects. “This is a holiday hardware hack creating WAV music player using a 512KB SPI Flash he cobbled from a damaged digital camera and the Attiny13 MCU. I implemented UART for song updating…. It is a hack with […]

DIY BT mouse using resistive touch screen

Vinod S acquired some resistive touchpads and decided to interface one with a Bluetooth module so it would function as a wireless computer mouse. He explains, “I have used a cheap ATtiny13 (8 pin) microcontroller which runs at internal 9.6MHz clock. It samples two channel analog voltage from the touchpad. One of the GPIO pin […]

App note: PC fan control using an ATtiny13

Dumb PC fans come with 3 pin jacks, and have no PWM control. This app note explains how to make a “smart” fan from a “dumb” one by implementing PWM control using an ATtiny13 microcontroller. This application note describes the operation of 12 volt DC  cooling fans typically used to supply cooling air to electronic  […]