Monthly Archives: February 2011

Arduino LCD horizontal progress bar using custom characters


LCD in this picture has 2×16 characters, so in quick way horizontal bar could have 16 steps resolution, but it’s not enough.  Each character is formed from 5×8 pixels. Every character can be sliced in to 5 pieces. After that we can have 5*16 = 80 steps.

First step is to create 5 custom characters. More about  createChar() please read at arduino.cc.

Each custom character is specified by an array of eight bytes. Byte represents character’s row.

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Arduino FM receiver with TEA5767

Old wish to make digitally controlled FM tuner come true when I found on Ebay cheap module with TEA5767 (Low-power FM stereo radio for handheld applications).

This module size is only 11.2mm x 11mm. TEA 5767 supports I2C.  Pinout and wiring:

For antenna i have used just 75 cm long wire, because that is 1/4 of wavelength at 100 MHz. TEA5767 doesn’t have audio amplifier, sound output level is very low, headphone can not be connected directly. During testing i had connected audio output to PC audio system.

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