We have a Pager that works, but no pager service is available. People have moved on to phones.
Amateur radio receivers
- Incoming SMS
- Outgoing Landline
Instruction manual of an electronic moving font with LEDs and a clock built up of LEDs. Furthermore information is available about a serial-to-I²C converter, an AT89C2051 evaluation board and a complete TV tuner with an I²C interface.
World Of Electronics – Electronic projects
The LED moving font is built up of separate modules consisting of 64 LEDs each (8×8 matrix). The modules can be cascaced according to the desired size of the font. Each module is controlled by the LED display driver MAX7219 (or MAX7221) which can drive 64 LEDs.
“Using this programmer you can program the internal flash of the microcontroller AT89C2051 from Atmel. The AT89C2051 programmer is connected via the serial RS232 interface to a PC. In comparison with other programmers, you do not need a special software, a terminal program is sufficient.”
Other Projects here are LED moving font, TV tuner, LED clock, Serial-I²C-Converter, AT89C2051/ATtiny2313 evaluation board, AT89C2051 programmer, I²C-I/O-Expander, AVR JTAG Emu, Displays.