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View Code? Open in Web Editor NEWa tiny battery powered ATTiny85 Function Generator
a tiny battery powered ATTiny85 Function Generator
Tiny Function Generator is a project by Technoblogy.com. It outputs a Frequency from 1Hz to 5,000Hz. Sinewave, Triangle Wave, SquareWave, pulses, Sawtooth and Noise (no frequency adjustments avaialble on Noise setting) Rotary encoder increases/decreases Frequency, while the Center Push-Switch selects Waveform. This circuit is based on his schematic and code - I added a voltage regulator and Battery Connector (2X CR2032 coin-cell batteries) to make it very portable. MUST USE the SpenceKonde ATTinyCore library to program the ATTiny85 via the Arduino IDE !!! (SpenceKonde/ATTinyCore#288) Burn the bootloader, then upload the code. See the Technoblogy.com website for full details ! http://www.technoblogy.com/show?2FCL The Output is marked "+" , while there are TWO Grounds to choose; one is a "virtual" ground desiganted by "--", and there is a power supply ground designated by "GND" . Choose the one best for your project. Through-hole Power Switch manufacturer part #EG1213 or DigiKey #EG1906-ND Battery Holder for two CR2032 Batteries= DigiKey #BH800S-ND . Rotary Encoder manufacturer part #EN11-HSM1AF15 or DigiKey #987-1188-ND . OLED is generic 128x32 . Verified Working.
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