Circuits & Schematics Microcontrollers Usage: clock - 8

71. The simplest possible RFID emulator. Part 2 - Improving the emulator
    Circuits Wireless Microcontrollers Usage
    .. The real value differs from one device to other. It can even change due to external parameters (temperature, power voltage, clock frequency, etc). Using only the parasite capacitor makes almost impossible to tune correctly the LC circuit. ...
    27-11-2011

72. 2.4GHz WiFi & ISM Band Scanner. Part 1 - Description and Schematic
    Circuits Wireless Measurement Microcontrollers Usage
    .. the USB cable to pins 15 and 16 of the chip and place a capacitor on pin 14 to help smooth the inbuilt 3.3V supply. The clock for the microcontroller is derived from the 20MHz crystal with the two 15pF capacitors providing the correct ...
    06-06-2012

73. USB Audio Multiplexer
    Circuits Audio Interfaces Microcontrollers Usage
    .. pin of FT232R with 10k pull-up resistor, which can be used for power saving functions, or it can be used for providing clock to ATmega13A. You can change functions of CBUS pins of FT232R using FT_Prog software which you can download ...
    19-01-2012
74. A Universal RFID Key. Part 1 - How does RFID work, Whats stored on the card
    Circuits Security Wireless MCU Open-Source Platforms Microcontrollers Usage Arduino
    .. Manchester Encoding, which is a way of encoding data so that it can be transmitted over a single wire ensuring that the clock information is able to be recovered easily. With Manchester encoding, there is always a transition in the ...
    27-01-2012
75. G5 Data Logger. Part 1 - Specifications and Schematic
    Circuits Automation Measurement Microcontrollers Usage PIC18F45K20 LTC2420
    .. . CH1 to CH4 are 1V full scale. CH5 to CH8 are 10V full scale. CH5 to CH8 use the input voltage divider. The real-time clock is provided by U4, DS1302. BT1 is a super capacitor 0.33F for power backup to the RTC chip. The DS1302 is ...
    08-04-2012
76. G5 Data Logger. Part 2 - Configurations, Using the temperature sensor with G5-Data Logger, K6 version with RS232 port
    Circuits Measurement Microcontrollers Usage
    .. type. The new memory cards that used in digital camera usually are preformatted with FAT. Setup File To set the internal clock, interval and station name, the setup file must be prepared. The setup file is a simple text file. It can be ...
    13-04-2012
77. DSS Function Generator on AD9833
    Circuits Oscillators Microcontrollers Usage AD9833
    .. DDS Communication. A DDS AD9833 from Analog Devices is a chip that is driven by a hi-frequency oscillator. I used a 50 Mhz clock. Inside this IC there is a big divider that goes down to less than 1Hz. The resulting clock is passed to ...
    23-04-2012
78. USB password generator
    Circuits Security Microcontrollers Usage
    .. pictures and a Makefile. In addition to “make flash” you of course need to update the fuse bits to use the PLL clock source see details from my previous tutorial for that. I also very strongly recommend testing the device using ...
    30-05-2012
79. Simplecortex - Arduino compatible ARM Cortex development board. Part 1 - Hardware
    Circuits MCU Open-Source Platforms Microcontrollers Usage Arduino BRC Electronics SimpleCortex
    .. memory mappings, register addresses etc. The NXP LPC1769 is an ARM 32-bit Cortex-M3 Microcontroller with MPU. Features: CPU clock up to 120MHz, 512kB on-chip Flash ROM with enhanced Flash Memory Accelerator In-System Programming (ISP) and ...
    14-02-2013
80. Serial four digit 7-segment LED display module
    Circuits MCU Open-Source Platforms Microcontrollers Usage Arduino
    .. module can be interfaced as a SPI slave device. In that case the SPI signal lines SDO (serial data out), SCLK (serial clock), and SS (slave select) from the microcontroller can be directly connected to the MOSI, CLK, and CS pins ...
    30-06-2012

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