Tero's Arduino Blog

Using Arduino with Ada

Storing large data amount to flash memory

If you paid attention in my Olimex MOD-LCD3310 article, you noticed that I stored a large array for font/characters to RAM memory. This is highly inefficient since the array takes space both on the flash and on the memory at the same time.

To make the space usage more …


Alarm Clock using Arduino, DS1307, buzzer, and LCD

Writing this article took somewhat longer than usual, since the scope expanded on the way. Originally, I planned to only show how to use a buzzer, but then I decided to add a DS1307 real-time clock chip to it. And of course, you need a LCD display for showing the …


Displaying Characters on MOD-LCD3310 by using Olimexino-328 with Ada

MOD-LCD3310 is Nokia 3310 display clone from Olimex. It provides black and white screen with 84x48 resolution, which is a great choice if 7-segment display or 2x16 LCD isn't enough.

MOD-LCD3310 uses UEXT connector found from almost every Olimex board. In case you don't have one, you can follow the …


Controlling 4-digit 7-segment display


A seven-segment display is nice for showing a single number. And 4-digit display is 4 times as nice since it can show four numbers.

However, using 4-digit version is also somewhat more complicated. The 4-digit 7-segment display (which I use) is done so that each digit will have same …


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