computoman

 Here is a little project I just started on. Have done a lot of work with a legacy Pc port. In fact, a lot of interfacing to different devices have been documented in my blogs. One thing you have to be careful of is that the pinouts vary between the different Raspberry Pi models. Here is the wiring diagram for the original RPi and for the RPi zero. An article recommends 470 ohm resisters. Not a fan of python, but there is a lot code that can be used. Python code. (railroad track warning lights.) -------------------- #Import libraries import RPi.GPIO AS GPIO import time #set gpio numbering mode and defind pins GPIO.setwarnings(False) GPIO.setmode)GPIO.BOARD) GPIO.setup(7, GPIO.OUT) GPIO.setup(11, GPIO.OUT #blink the leds for x in range(0.10):     GPIO output(7, True)     GPIO output(11, False)     time.sleep(.5)     GPIO output(7, False)     GPIO output(11, True)     time.sleep(.5) # cleanup the gpio pins before ending GPIO output(11, False) GP

So you've got your Pi Zero, but you don't have an HDMI monitor! The Pi Zero has a composite video out port which is very easy to access, and we're going to show you how!  You'll need a few bits and pieces, including a soldering iron to solder some headers on: We're going to be soldering two pin headers onto the Pi Zero, circled in red and labeled TV in the picture below So, go ahead an solder your pin headers on! You can of course solder wires directly to the board if you'd like, but headers are neater (and their connection subsequently removable). Now get your RCA connector, and plug the two male ends into the two screw terminals. Again, you can use wire for this, but male pins are probably neater. Now we can plug the female end of the jumper wires into our Zero. Polarity should always be "Positive" (+) of the RCA connector, to the pin labelled "TV" on the Raspberry Pi. In this case, it is our white jumper wire.