The 4067 was one of the IC’s that I wanted to connect up to various microcontrollers as it looke dextremely useful, here is a quick description from one of the datasheets…
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Another sparkfun design here for a simple board that takes a 4-9V input voltage and outputs a selectable 1.8V or 3.3V regulated voltage. Based on the LM317 again Bill…
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An open source power supply based on the LM317, the voltages are switchable using SW2 Parts List Part Value Device Package Description C1 100uF CAP_POLPTH1 CPOL-RADIAL-100UF-25V Capacitor Polarized C2 10uF…
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A DIY Arduino board which you can etchby hand and solder it together. It is pin-compatible with the Arduino Diecimila, and should work with any Arduino shield. EAGLE files (.zip)…
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the Freeduino MaxSerial, designed by Fundamental Logic Derived under CC2.5 from the Freeduino files above and the Arduino Diecimila schematic Download Eagle files for the schematic and the board …
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the Freeduino Serial, designed by NKC Electronics Derived under CC2.5 from the Freeduino files above and the Arduino Serial 2.0 schematic Download Eagle files for the schematic and the board…
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Schematics of a phase control circuit (simplified), used for dimming a light Source : wikipedia
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by Tony van Roon Use this circuit instead of a standard on-off switch. Switching is very gentle. Connect unused input pins to an appropriate logic level. Unused output pins *MUST*…
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As shown in the schematic above, when a inductor coil L1 is brought near the wire carrying the audio signal, the audio signal will be induced into the coil and…
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Flash the ACT led from the command line, this tip was sent to me so I gave it a try, you could this in a script. The LED in question…