Activity Board WX - AV out

I am a new owner of the Activity Board WX (#32910).
Testing it's funktionality, I tried to figure out how to get a signal to my TV.
There is a Audio/Video-jack and I have got the right adapter:
The guide says
"Propeller I/O pins P26 (left channel = tip) and P27 (right channel = ring or
ring 1) are hardwired to low-pass filters, amplifiers and coupling capacitors that can drive headphones,
ear-buds, speakers, or line level inputs. It is compatible with the Veho 360 speaker from Parallax (item
A third signal (sleeve) connects to the AUX socket on the wireless access and communication header.
This can be used to connect the microphone and controls on a CTIA-compatible headset (cell phone
earbuds + mic for example) to the breadboard. It can also be used for connecting baseband video from
the breadboard to a TRRS to RCA adapter’s video channel.

I searched for Demo, but did'nt find one.
I also tried to change the TV.spin object - but I don't know which PINs are to set for output.
And which pin ist AUX ?

Sorry for my newbee - qustions, but I tried hard to figure it out for my self - without success.



  • Mike GreenMike Green Posts: 23,008
    edited 2018-10-10 - 16:47:59
    Your information is a little confusing. The Activity Board WX does have an Audio/Video jack, but the product number is #32912. Product #32910 is an older Activity Board that only has Audio on the jack. The product guide for the newer board (this) talks briefly about this and shows where the AUX pin is located.

    You still need a video signal. For that you need 4 I/O pins starting at a multiple of 4. Commonly 12, 13, 14, and 15 are used, but any group of 4 from 0 to 24 can be used. Look at the product guide for the Human Interface Board for the Quickstart (here) and the schematic (here) for one example.

    If you just need black and white text, this 1-pin TV driver in the Object Exchange is great. It only uses one I/O pin and a few passive components. The object archive contains a demo program and a similar 1-pin PS/2 keyboard driver.
  • I had the same question when i discovered the P1.

    here is the discussion :
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