Circuits & Schematics: www.aaroncake.net - 9

81. 2.4GHz WiFi & ISM Band Scanner. Part 3 - Assembly, Using the Scanner
    Circuits Wireless Measurement Microcontrollers Usage
    .. best spots with the minimum of interference. Spikes all over the spectrum is a good indicator of Bluetooth activity. geoffg.net
    06-06-2012

82. Simple and Cheap Logic Analyzer. Part 1 - Features and Schematic
    Circuits Measurement
    .. B1.0 - Whole package (schematic, device placement, Gerber, Excellon and PS data for PCB) - download minila.sourceforge.net
    13-05-2012

83. Simple and Cheap Logic Analyzer. Part 2 - Firmware and Software
    Circuits Measurement
    .. protocol (Timeanalysis 1.x) - download Communication protocol (Stateanalysis 2.x) - download minila.sourceforge.net
    20-05-2012
84. G-Force Monitor
    Circuits Measurement Microcontrollers Usage
    .. ago, I got request to find some kind of solution to measure G-Forces in moving car. I found a lot of commercial products on net, but in my country it is little bit difficult to buy them, so I decided to make my own software and hardware. For ...
    17-01-2013
85. Zero-Cross Detectors Deliver Positive And Negative Triggering
    Circuits Power
    .. may have to use long control pulse trains or dc gate current. The triac used had an IG of less than 20 mA. R4 is a safety net that protects the transistors from excessive control current. R S and C S form a snubber network, which can be ...
    30-10-2012
86. Voice Shield for Arduino
    Circuits Audio MCU Open-Source Platforms Microcontrollers Usage Arduino Winbond ISD1790PY
    .. from a personal computer: in this case it must be MP3 or WAV files (Figure 6). Installation and Use note: Microsoft .NET Framework 4 is required to install the software. The use of the software is fairly intuitive: you need to first ...
    24-03-2013
87. Low-duty-cycle LED flasher keeps power draw at 4 mW
    Circuits Light Power
    .. Q 2 . This increase reduces the collector current of Q 2 and, therefore, the base current of Q 1 and closes the loop; the net result is a reduction of the collector current of Q 1 to maintain a constant value. Note that when the output of IC ...
    21-08-2013
88. A Generic Optimized 16-bit LCD Adaptor for the Arduino. Part 1 - Schematic
    Circuits Interfaces MCU Open-Source Platforms Microcontrollers Usage Arduino
    .. XMEM interface that is exposed in the block of pins starting at 23 (Figure 4). The letter ‘H’ in the net designators indicates that these are high level 5V signals. I should probably have used ‘T’ for TTL but ...
    05-10-2013
89. Sound-Card Signal Generator Interface Adds Variable Offset Control
    Circuits Audio Computers and Peripherals
    .. and offset by the inverting summing amplifier U2A to form the signal-generator’s output. Figure 3. The associated VB. Net code provides an easy-to-use PC graphical interface for setting the function generator’s critical parameters.
    11-02-2015
90. High-impedance FET probe extends RF-spectrum analyzer's usable range
    Circuits Analogue Design Measurement Texas Instruments OPA656
    .. loads for a total load of 100 Ω, which results in a 6-dB gain loss for which IC1's gain of two compensates for a net gain of unity. The OPA656 also introduces lower noise and distortion than that of most commercially available, ...
    14-02-2016

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