In Figure we can see a general outline of the preamplifier. La señal de entrada se aplica a la primera etapa compuesta por el circuito integrado U1, TL071 y los componentes asociados. The input signal is applied to the first stage comprises the integrated circuit U1, TL071 and associated components. La ganancia de esta etapa [...]
Here is the description a 32 outputs MIDI able to switch relays, electromagnetics devices… in order to automate a mechanical musical instrument, or command lights… Principle: MIDI datas from a musical instrument equipped with an MIDI output or from a sound card of a computer are analyzed by the software present on the PIC 16F84. [...]
The Witness Camera is an automated, self-recording surveillance camera, that uses a gigabyte-class flash card as recording media. I designed the Witnesscam because available surveillance solutions were too expensive or impractical for home use. I built the system from a VGA CMOS colour camera, a passive-infrared (PIR) movement sensor, an ATmega32 processor, and a 1GB [...]
Download: Service Manual Samsung Video Cassete Recorder SV-635x
PA100 GC – 100W per channel, 2x LM3886 in parallel power amplifier This amplifier is based on the PA100 parallel amplifier detailed in National Semiconductor’s application note – AN1192. Since my DIY speaker is 4-ohm and somewhat difficult to drive, I want to have a more powerful amplifier to match with it. Therefore I designed [...]
The big idea is that he used a host computer to run a Processing application, which periodically checks Twitter for updates, and then sends “scrolling” data, one column at time, to the external LED display. Source: David Nichols
CodeLock AVR electronic combination lock is realised with Atmel AVR microcontroller AT90S2313 or ATtiny2313. Program in hex code is 2 kB long. User code is consisted of 1 to 8 digits. If you buy the chip than you can enter up to 8 user codes. If the code is entered in the correct sequence, then [...]
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