Bubble Leds Segments Display

Other Hardware LEDs and Multiplexing
1

Hi guys;

I have a few of those bubble display in my parts bins. I mostly bought them at Active Surplus. They where cheaps.

One type : 3 digits and the others : 8 "digits".

I did some investigations to find the pinouts, what segments is and what digits is.

One model is the standard 7 segments with the dot. Standard like : a, b, c, d, e, f g, dot

The others model is a bit complex. I just don't know the standard for an alpha-numeric display. I got : a, b, c, d, e, f. The rest is : --> g , h, i, j, k, l, m, n <--- ?

Standard Segments : ___
---- .

Alpha-Numeric :

| \ | / |

| / | \ |

Here the pictures.

buble_7_segments.jpg
buble_7_segments.jpg1024×768 138 KB

buble_alpha_numeric_display.jpg
buble_alpha_numeric_display.jpg1024×768 136 KB

2

Here the pinouts of the Bubble 3 Digit 7 segments Led Display

notch
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/

D1 D2 D3
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pin 1 - D1 - CC pin 12 - NC
pin 2 - e pin 11 - f
pin 3 - d pin 10 - a
pin 4 - D2 - CC pin 9 - g
pin 5 - c pin 8 - b
pin 6 - DOT pin 7 - D3 - CC

3

Now, here the pinouts of the alpha-numeric display. Commun cathode

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D1 D2 D3 D4 D5 D6 D7 D8 
pin 1 - D7 - CC
pin 2 - h
pin 3 - d
pin 4 - c
pin 5 - e
pin 6 - n
pin 7 - D1 - CC
pin 8 - D2 - CC
pin 9 - D3 - CC
pin 10 - D4 - CC
pin 11 - m
pin 12 - D5 - CC
pin 13 - j
pin 14 - D6 - CC
pin 15 - g
pin 16 - i
pin 17 - D8 - CC
pin 18 - a
pin 19 - b
pin 20 - f
pin 21 - k
pin 22 - l