This experimental project shows how to build a simple PI (Pulse Induction) metal detector based on ATtiny13 / AVR microcontroller. My goals were to make a circuit as simple as possible and to use only popular / cheap electronic parts. The device has been tested with very small coil (55mm diameter, about 30 turns of 0.5 … Read more
Next Arduino blinky project. This version of “blinky” example is using Timer1 Compare Match A interrupt to make an onboard LED blink for roughly one second. The code is on Github, click here. Parts Required arduino board (i.e. Arduino/Genuino UNO) basic LED (on-board LED) Software This code is written in C++ and can be compiled using an Arduino IDE. All … Read more
Yet another Arduino blinky project. This version of “blinky” example is using Timer1 Overflow interrupt to make an onboard LED blink for roughly one second. The code is on Github, click here. Parts Required Arduino board (i.e. Arduino/Genuino UNO) Software This code is written in C++ and can be compiled using an Arduino IDE. All information about how to compile this project is here. /** … Read more
This is another blinky project. A “Hello World” program for the electronics. This version of “blinky” example is using delay function to make an onboard LED blink for roughly one second. The code is on Github, click here. Parts Required Arduino board (i.e. Arduino/Genuino UNO) Software This code is written in C++ and can be compiled using an Arduino IDE. All … Read more
I always wonder whether it is possible to make an amplifier of class D on ATtiny13 or not. Some time ago I found George Gardner’s project based on ATtiny85 – TinyD. It was a sign to start challenging it with ATtiny13. It took me a few hours but finally I made it! The code is very short and useses a … Read more
This project shows how turn ATtiny13 with sound detector module into smart Clap Clap Switch. The project has been designed to react on only double claps (clap clap – ON, clap clap – OFF). So, how it works? There is one pin for a MIC (digital output from sound detector module) and one pin for a … Read more
This simple project shows how to control popular and cheap stepper motor 28BYJ-48 using ATtiny13. The code is on Github, click here. Parts Required ATtiny13 – i.e. MBAVR-1 development board stepper motor 28BYJ-48 with driver on ULN2003 Circuit Diagram Software This code is written in C and can be compiled using the avr-gcc. All information about how to compile this project is here. /** * … Read more
This project is very similar to ATtiny13 – randomly flashing LED with PRNG based on LFSR. However, this time I used BBS (Blum-Blum-Shumb) algorithm as PRNG (Pseudo Random Number Generator) to generate 16-bit (pseudo) random numbers. The less significant bit of randomly generated number is a major factor in decision to on/off the LED. The code is on Github, click here Parts Required … Read more
This article shows how to make an ATtiny13 to generate hardware PWM (Pulse Width Modulation) signal. The example code uses timer in Fast PWM mode (WGM02:0 = 3, see manual section 11.7.3). In this mode, by setting the COM0A1:0 bits to one, the compare unit allows generation of PWM waveforms on the AC0A pin (PB0) with duty resolution 0..255. The presented example … Read more
Bilexa Bass – Singing Fish, Sound-Actived 3D-printed Vibrator and Scared Spider Toy. I wanted to highlight these funny (sometimes crazy!) projects as they are using my version of simplified implementation of DFT I created for project ATtiny13 – dance lights with DFT and because the authors are very idea-driven, original and just awsome. Bilexa Bass – Singing Fish (Bob, ATtiny84) … Read more