In summary, this is what Wise Clock 2 can do (with the current open source software release):
- display the current time and date;
- read a user-editable file from SD card and display its content (which is usually quotations, hence the "wise" in the name);
- provide alarm functionality;
- provide remote (infrared) controllability.
The Wise Clock 2 kit includes the following:
1. the Duino644 microcontroller board (as a ready-to-solder kit);
2. the 16x32 (red) LED matrix display;
3. the enclosure (two acrylic plates and the required hardware).
The following steps will show how to build Wise Clock 2, including:
- how to solder the Duino644 board;
- how to connect the display;
- how to encase the clock;
- how to get it functional (prepare SD card, set time etc).
Duino644 is the name of the microcontroller board used in Wise Clock 2.
Duino644 kit contains the following components:
- PCB with the SD card socket soldered on it;
- ATmega644 chip and 40-pin socket for it;
- DS1307 chip (real time controller) in 8-pin DIP package, and a 8-pin socket for it;
- 24LC256 EEPROM chip in 8-pin DIP package, and a 8-pin socket for it;
- CR1220 small coin cell battery, and its plastic holder;
- 16MHz crystal and two 22pF capacitors;
- 32768Hz crystal;
- micro speaker;
- right-angled micro switches (4 pieces);
- USB miniB-type connector;
- 2x8-pin female headers (2 pieces);
- high intensity blue LED in 1206 package;
- 40-pin female header;
- L78L33 voltage regulator;
- JST 2-pin power connector and JST 2-pin power jack with cables;
- infrared receiver IC and 3-pin socket for it;
- 6-pin right-angled male header (for FTDI connector);
- 10K resistors (10 pieces);
- 4K7 resistors (3 pieces);
- 75R resistor;
- 100nF decoupling capacitors (3 pieces);
- 2x3-pin male header (for ICSP connector).
Once we checked we have all the components ready, we can proceed to soldering.