https://github.com/mryndzionek/attiny85_samples

attiny85 sample apps and libraries
https://github.com/mryndzionek/attiny85_samples

annoying attiny attiny85 avr avr-gcc blink charlieplexing geiger-counter geiger-muller-device mq6-sensor

Last synced: about 1 month ago
JSON representation

attiny85 sample apps and libraries

• Host: GitHub
• URL: https://github.com/mryndzionek/attiny85_samples
• Owner: mryndzionek
• License: gpl-3.0
• Created: 2014-06-04T19:26:55.000Z (over 10 years ago)
• Default Branch: main
• Last Pushed: 2024-05-31T11:27:28.000Z (7 months ago)
• Last Synced: 2024-05-31T16:06:53.876Z (7 months ago)
• Topics: annoying, attiny, attiny85, avr, avr-gcc, blink, charlieplexing, geiger-counter, geiger-muller-device, mq6-sensor
• Language: C
• Homepage:
• Size: 11 MB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
attiny85 sample apps and libraries

==================================

Introduction

------------

ATtiny85 MCU - some tests and example apps + I2C and LCD libraries

### Low power LED blink (lp_blink.c)

LED blink firmware putting the MCU into power-down state

between the LED changes.

### Charlie (charlie.c)

A simple demonstration of PWM LED charlieplexing.

### I2C LCD display demonstration (main.c)

MQ6 readout and a progress bar on a LCD. 

### MQ6 gas sensor demonstration (mq_6.c)

MQ6 readout and a progress bar on a LCD. 

### Annoyatron

A simple circuit making different noises at random

intervals when left in the dark. The sounds/noises are:

 - `snd/snd_cricket.c` - cricket chirp

 - `snd/snd_droplet.c` - leaking faucet

 - `snd/snd_insect.c` - buzzing insect

 - `snd/snd_scifi.c` - sci-fi/robot sounds

 - `snd/snd_water.c` - running water

 - `snd/snd_whisper.c` - scary whispers

Connections are simple:

 - PB1/PB4 - piezo buzzer

 - PB2 - LDR (light-dependent resistor) to VCC and a 10k resistor to GND

### Simple Geiger Counter firmware (geiger.c)

![geiger_gif](design/geiger.gif)

![geiger_photo](design/geiger_photo.png)

Simple Geiger Counter based on ATtinyx5 MCU.

This is more of a Geiger alarm.

Tracks the radiation dose internally, but only signals two

alarm levels on a two-color LED and produces sound clicks

if the alarm level is breached. It's also designed to

be very low-power (battery life test ongoing).

No schematic yet, but here is a block diagram

and a veroboard-style PCB (made with [VeroRoute](https://sourceforge.net/projects/veroroute/)).

![geiger_block](design/geiger_block.png)

![geiger_pcb](design/geiger_pcb.png)

The BJT transistor can also be MPSA42.

The buzzer MOSFET should preferably logic level.

The firmware is designed as a simple and lightweight

cooperative scheduler maintaining in every state

the lowest power level possible: 

![geiger](design/geiger.png)

### U8g2 SSD1306 i2c OLED display test

### U8g2 SSD1306 i2c OLED + DS3231 clock app

![oled_1](images/oled_1.png)

![oled_2](images/oled_2.png)

![oled_3](images/oled_3.png)

Configuring

-----------

```

cmake -DCMAKE_BUILD_TYPE=Release -DAVR_MCU=attiny85 \

      -DAVR_PROGRAMMER=avrisp -DAVR_PROGRAMMER_PORT=/dev/ttyACM0 \

      -DMCU_FREQ=8000000 -DCMAKE_TOOLCHAIN_FILE=../toolchain-avr-gcc.make ..

make -j

```

Contact

-------

If you have questions, contact Mariusz Ryndzionek at: