New Product: Tinusaur Shield LEDx2

Tinusaur Shield LEDx2

As we’ve mentioned earlier (What is happening with this project?) we were working on shield-like add-on board for the Tinusaur Board. So here it is … It has only 2 LEDs and 2 resistors for each LED so no much to solder. This shield aims at 2 things – making it easier to … Solder 2 LED … Read more

UPDATED: DS1307 Library

The functions were moved to separate files in the DS1307tiny library. The sample code in the ds1307tiny_test1 module looks cleaner now. The output should be something like this … Note that one of the challenges working with a real-time clock the the DS1307 is to set it up with the correct time at the beginning. One way is to … Read more

Working with DS1307 Real-time Clock and ATtiny85 using USITWIX Library

DS1307 Serial Real-Time Clock USITWIX Tinusaur.

Working with the DS1307 Serial Real-Time Clock using the USITWIX library for I2C / TWI on Atmel ATtiny85 / Tinusaur. Let’s see how can we work with the DS1307 serial real-time clock using the USITWIX library for I2C / TWI on Atmel ATtiny85 / Tinusaur. Bellow is the testing setup. NOTE: We need the USB-to-Serial … Read more

Working with BMP180 Pressure Sensor and ATtiny85 using USITWIX Library

USITWIX – Using USI as TWI / I2C

In our previous post “USITWIX – Using UART as TWI / I2C” we looked at the USITWIX library that implements TWI / I2C communication between а  ATtiny85 micro-controller and peripherals. Let’s see now how we can use that library to work with the BOSCH BMP180 atmospheric pressure sensor and a ATtiny85/Tinusaur boards. The BMP180tiny Library So, we wrote a simple library (called it BMP180tiny) that uses USITWIX to read and … Read more

New Library: USITWIX – Using USI as TWI / I2C

Attiny85 Tinusaur USI TWI I2C BMP180 Variometer

As we know, there’s no I²C on ATtiny85, not even the TWI (Two Wire Interface, which is basically I2C with a different name) that some other Atmel chips have, so I had to write my own that takes advantage on the built-in USI unit. This library is called USITWIX and will be presented in this blog post. Of course, I used other people’s … Read more

ATtiny85 and ESP8266 – do you really need that?

Tinusaur ATtiny85 ESP6288 Shield

Yes, why not. And here is what I did … (this will be series of posts about what I did with ATtiny85/Tinusaur and ESP8266 WiFi module) First, what could be accomplished with such limited device as ATtiny85? It has 8 pins, 2 of which are for the power (Vcc and GND), one for the RESET … Read more

The OWOWOD Library

OWOWOD is One Wire / One Way Output for Debugging library. It allows you to output text from the Tinusaur (ATtiny85 microcontroller or other similar), though USB-to-Serial or TTL converter (based on PL2303, CH340G or similar) and to the computer screen using COM port monitoring tool. Why one would need something like that? It would’ve … Read more

Printing Decimal Numbers on SSD1306 OLED Display Using the SSD1306xLED Library

Tinusaur SSD1306XLED SSD1306 OLED Llibary

UPDATE: Please, check the most recent post about this library at /tag/ssd1306xled After playing for awhile with that SSD1306 OLED display I decided to add few more things to the SSD1306xLED library and the ability to print numbers seamed to be an important one. There is already a function in the library that outputs strings so I … Read more

Tutorial 003: Making Sounds with Buzzer

So far we’ve used a LED as output to produce light of different colors and intensity (Tutorial 001 and Tutorial 002) but we haven’t generated any sound yet. In fact, that isn’t very difficult to do. We will use a buzzer for output. According to Wikipedia … the buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, … Read more

The Tinusaur Boards are Back in Stock

UPDATE about the online store: (1) Please note that this is the website of the Tinusaur Foundation – a non-profit association for public benefit, and we don’t have an online store; (2) The Tinusaur Boards and related products are offered by another organization, which is a business entity and has a website at Finally! All the parts were received … Read more