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SegaSTV OLED 128x32 bitmaps

Maru-Chan de Goo!!!
maru_chan_de_goo.gif
 
I have a question for someone with the STV multi cart... I have not got mine yet

When the dip switch pins are jumped, is it basically joining 5v across the pins? or maybe a lower voltage?
This is how the sega16 multi works.
 
BladeZX said:
When the dip switch pins are jumped, is it basically joining 5v across the pins? or maybe a lower voltage?
This is how the sega16 multi works.
Click to expand...
it doesn't work the same way as the S16 Multi.

generally switches of all kinds (buttons, dips, etc.) are either a "pull-up" or "pull-down" circuit.

ELECPullUpResistor.jpg


JAMMA buttons typically work like the diagram on the left. I'm not sure which circuit the ST-V uses for it's game selection jumpers

in both instances if using a volt meter it's going to appear as if one pin is ground and the other is 5V
 
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it's not an analog signal.

the whole point of this is to drive the input pin high or low (1 or 0).
If you didn't have the pull up/pull down resisor then when the button was un-pressed the signal would be "floating" and wouldn't register as either on nor off.

The pull-up/pull-down resistor shouldn't interfere with a Pi or arduino you just need to figure out which end is is the "IC input" and then connect to that one, then you set it high or low as needed.
 
I cheated. I filled the background with a black and white sunburst gradient. Then I did an ordered dither 1-bit reduction on it which resulted in this:

guardian_force_bg.gif


Then made an outline for the text and just overlaid it.
 
I gotta say I'm excited to get my hands on this new selector. I'd like to design a case for it once it's done.

for years I've wanted an excuse to retire the cases for the current Arduino based selector.
 
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