Circuits & Schematics Microcontrollers Usage: clock - 5

41. 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

42. 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

43. 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
44. 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
45. 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
46. Intelligent Fan Controller. Part 1 - Schematic
    Circuits Computers and Peripherals Microcontrollers Usage
    .. standard. The buzzer is used to make an audible alarm when a fan or sensor has failed. The crystal (X1) provides the 20MHz clock and the USB connector is wired directly to the USB transceiver within the micro. The 5V provided by the ...
    15-03-2012
47. Low cost temperature data logger using PIC and Processing
    Circuits Measurement Microcontrollers Usage
    .. are connected to the corresponding pins of the USB-UART module. The microcontroller runs at 4.0 MHz using an internal clock source. Although I have disabled the MCLR function here, you can use it for an external reset if you want. I ...
    27-02-2012
48. mini Logic analyzer on AVR Microcontroller
    Circuits Measurement Microcontrollers Usage
    .. be found on the output pin of TSOP-1736 Infrared Receiver, on the Transmit and reveive pins of MAX-232 chip (RS-232), on Clock and Data pins of I2C data bus and many more electronic components. This circuit supports capturing for up to ...
    26-02-2012
49. 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
50. 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

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