Tero's Arduino Blog

Using Arduino with Ada

Attiny4313 and I2C master using USI

Getting I2C working with attiny processors has been yet another long-time project of me. It has been stuck mostly because I haven't had time to create attiny4313 board with I2C chip on it.

But finally, I managed to create one:

The attiny2313 board, where I put all the stuff ...

[more]

Temperature measurement with DS18B20 and one-wire protocol

Required parts:

  • Arduino UNO or Duemilanove
  • DS18B20 temperature sensor
  • Some jumper wires
  • About 5K ohm resistor (4.7Kohm or 4.99Kohm is ok)

I had a couple of extra DS18B20 temperature sensors lying around, so I was interested in communicating with them using Arduino.

DS18B20 uses 1-wire protocol for communication ...

[more]

Recovering IBM Thinkpad T42 BIOS password with AVR-Ada and Arduino

My father had forgotten the BIOS password of his IBM Thinkpad T42 laptop and I promised to take a look at it.

It turns out that there is a relatively easy way to recover the password.

However, I didn't have parts described in the instructions, so instead I used ...

[more]

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