PC Serial Port Receiver


Rating: 0.00 / 5 
PC Circuits / Computer Circuits
This circuit was designed to control a 32 channel Christmas light show from the PC serial port. Originally designed with TTL logic, it has been simplified using CMOS circuits to reduce component count. It is a fairly simple, reliable circuit that requires only 4 common CMOS chips (for 8 outputs), an optical isolator, and a few discrete components. The schematic diagram (SERIAL.GIF) illustrates the circuit with 16 outputs which can be expanded with additional 8 bit shift registers. visit page.
PC Serial Port Receiver - schematic

Recommended videos

  • Inside a cheap 3-way remote control switch. (With schematic.)
    Duration: 15:48.
  • #157: Circuit fun: Automatic audio leveling circuit | audio compressor | for scanning receiver
    Duration: 12:30.
  • Wireless electricity transmission circuit
    Duration: 4:16.


  • The Verge
    The Verge I'd originally been planning to spend a weekend merrily cutting out the shapes of Manhattan, Brooklyn, Queens, The Bronx and Staten Island from the boards with a hacksaw. But when I saw the full bags of e-waste Amelia had collected
     26 June 2016
  • Android Police
    Android Police I believe SMT stands for Surface Mount , and refers generally to the process of mounting and connecting up all the components on the silicon that make up the phone's boards. I'll be honest: I'm not an engineer (could you tell
     1 April 2016
  • Farm Industry News (subscription)
    “That can be very difficult, especially with how fast parts change.” So while the exterior of a control unit may look the same from year to year, the components inside may be different. However, engineers must ensure all units work
     31 March 2016
  • Washington Times
    Washington Times But SCOTUSblog reporter Lyle Denniston said he believes the court will try at all costs to avoid a split decision, which would uphold the court rulings and fracture the meaning of the contraceptive mandate by region. “
     20 March 2016
  • Firstpost
    IBNLive Besides, stock exchanges had put in place filters to stave off excessive volatility in stocks as well as derivatives segments. Brokerages and other market entities had also advised at that time to ensure there are no sudden spurts or
     9 November 2015
  • Officer.com (press release) (registration) (blog)
    Had it remained merely a legislated revision of dry criminal procedure and directed at the state's courts, of interest only to the Land of Lincoln's various county clerks and defense attorneys, no one would have paid it the slightest
     30 September 2015
  • Institute for Ethics and Emerging Technologies
    There may be several reasons why GSR is not widely used in psychotherapy, but one surely is that the was discredited in the 1950s when it was very prominently used in the Dianetics and Scientology movement. That was the time when Freud's
     25 July 2015
  • Science Daily
    The findings indicate that intricate interactions of components effectively change the balance of top-down and bottom-up processing, with learning enhancing the contribution of top-down control. ... National Institutes of Health
     13 July 2015
  • Computerworld
    Computerworld For example, Georgia , the University of Tokyo and Microsoft Research have all created printable circuits over the past two years. One company, called Bare Conductive, has ... Mac and Linux operating systems. It connects to a v
     17 February 2015