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  2. Time switch - Wikipedia

    en.wikipedia.org/wiki/Time_switch

    A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.

  3. Programmable interval timer - Wikipedia

    en.wikipedia.org/wiki/Programmable_Interval_Timer

    The Intel 8253 PIT was the original timing device used on IBM PC compatibles.It used a 1.193182 MHz clock signal (one third of the color burst frequency used by NTSC, one twelfth of the system clock crystal oscillator, [1] therefore one quarter of the 4.77 MHz CPU clock) and contains three timers.

  4. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    Positive supply: For bipolar timers, the supply voltage range is typically 4.5 to 16 volts (some are spec'ed for up to 18 volts, though most will operate as low as 3 volts). For CMOS timers, the supply voltage range is typically 2 to 15 volts (some are spec'ed for up to 18 volts, and some are spec'ed as low as 1 volt).

  5. List of Arduino boards and compatible systems - Wikipedia

    en.wikipedia.org/wiki/List_of_Arduino_boards_and...

    Upgraded from Seeeduino Stalker V3.0 Lower power consumption (down to 100uA in sleep mode) Extra toggle switch for X-bee area 2 extra toggle switches for selecting the INT pin connected to RTC 3.3 V and 5 V dual mode evive: ATmega2560 [31] STEMpedia: Built on top of Arduino MEGA 2560 R3. [66] Designed for STEM educational, and prototyping purpose.

  6. Cam timer - Wikipedia

    en.wikipedia.org/wiki/Cam_timer

    Most cam timers use a miniature mains synchronous motor to rotate the mechanism at an accurate constant speed. Occasionally more complex timers with two motors are seen. A drum sequencer is a re-programmable electromechanical timing device used to activate electric switches in repetitive sequences.

  7. NXP LPC - Wikipedia

    en.wikipedia.org/wiki/NXP_LPC

    LPC111x has one UART, one I²C, one or two SPI, two 16-bit timers, two 32-bit timers, watch dog timer, five to eight multiplexed 10-bit ADC, 14 to 42 GPIO. I²C supports standard mode (100 kHz) / fast-mode (400 kHz) / fast-mode Plus (1 MHz) speeds, master / slave / snooping modes, multiple slave addresses.