Circuits & Schematics Microcontrollers Usage: clock - 6

51. 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

52. MakerBot Watch - portable Arduino environment
    Circuits Domestic MCU Open-Source Platforms Microcontrollers Usage Arduino
    .. lots of support #defines,MakerBotWatch.cpp source for MakerBotWatch class defintions,watch_test.pde test sketch for simple clock using MakerBotWatch class, MakerBotWatch_V1.1.h a slightly modified header file, MakerBotWatch_V1.1.cpp a ...
    23-12-2011

53. 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
54. The simplest possible RFID emulator. Part 1 - Schematic and Firmware
    Circuits Wireless Microcontrollers Usage
    .. instead of using the internal oscillator, the firmware uses the RFID carrier, present in the GP5 pin, as the system clock. This way, the firmware is simpler because there is no need to synchronize the data modulation (switching the ...
    25-11-2011
55. Canon DSLR IR Remote
    Circuits Microcontrollers Usage ATtiny2313A
    .. is a little too powerful, but first tests with ATtiny13 revealed some issues with internal oscillator. The timing of the clock signal is crucial when generating a carrier wave. Carrier should have 32.6kHz frequency for the best results. ...
    21-11-2011
56. ATtiny45/85 Servo Library
    Circuits Microcontrollers Usage Robots Power
    .. other ATtiny microcontrollers, such as the ATtiny15, but I haven’t checked. Supports only 5 servo.* Supports only one clock frequencies: 8MHz. Supports only pins on Port B. Which is only port available on the ATtiny45/85. Uses timer0 ...
    31-10-2011
57. Add 512K of external SRAM to Arduino Mega. Part 1 - Theory
    Circuits MCU Open-Source Platforms Microcontrollers Usage Arduino Arduino Arduino Mega
    .. and saved 8 pins in the process. When choosing a latch we must ensure that it is fast enough to cope with the 16Mhz core clock of the Arduino. 74HC series latches are too slow. The datasheet recommends that we use the 74AHC series. ...
    13-09-2011
58. 16x8 LED Matrix Display
    Circuits Microcontrollers Usage Microchip PIC18F2550
    .. The 16×8 LED Matrix clock was a project I built for my office. I wanted to have a clock for my desk which was a little unusual. I decided ...
    29-08-2011
59. Voltage monitor for car's battery and its charging system. Part 1. Schematic
    Circuits Measurement Microcontrollers Usage
    .. and the decimal point (DP) are driven through PORTB of PIC16F1827. The microcontroller runs at 500 KHz using the internal clock source. The ULN2003 darlington array provides current sink to each of the common cathodes of the seven segment ...
    18-07-2011
60. Experimenter's board for Enhanced Mid-Range PIC microcontrollers (PIC16F1827 and PIC16F1847). Part 2. Testing of the board
    Circuits Microcontrollers Usage
    .. on the board. We will connect them to PORTA and PORTB of PIC16F1827 . The microcontroller will run at 500 KHz internal clock, so you can take the ceramic resonator out from its slot. You should use jumper wires to make the following ...
    30-06-2011

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