‘It’s all in the game’ workshop
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“Moddr_” crew gave one day workshop on microcontrollers. The participants had to quickly learn basics of C hacking, device prototyping and soldering. “Attiny 2313”, LED displays and batteries were put together to create abstract digital automatons.
>>> design credits – evilmadscientist.com <<< During the workshop we tried to create a new font table for a weird dual display. The time run out very fast, so as an alternative we flashed poor Attiny with pseudo-random data ;) , which in-fact produced nicely unstable results.
PSC08-12 vs. ATTINY 2313 pinout alignment
Almost all pins connected respectively to each other except
that ATTINY pin3 goes to PSC pin10 (use a little wire!),
ATTINY pin10 to PSC pin12. PSC pin17 is not used
(second ground pin) and pin12 connected to ATTINY pin10 (ground)
attiny: 2 3 4 5 6 7 10 9 8 11 12 13 14 15 16 17 18 19
PSC08-12: 18 10 16 15 14 13 12 11 - 9 8 7 6 5 4 3 2 1
segment: n e p c u d - f - r t s m g k h a b
PSA08-12 pin|
LED segment| |
I/O port| | |
AT2313 pin| | | |
| | | |
1 reset unused
2 d0 n 18
3 d1 e 10
4 a1 p 16
5 a0 c 15
6 d2 u 14
7 d3 d 13
8 d4 unused
9 d5 f 11
10 grnd - 12
11 d6 r 9
12 b0 t 8
13 b1 s 7
14 b2 m 6
15 b3 g 5
16 b4 k 4
17 b5 h 3
18 b6 a 2
19 b7 b 1
DISPLAY SEGMENTS:
a b
===== =====
| \ | / |
h | \k |m /n | c
| \ | / |
| u \|/ p |
===== =====
| /|\ |
g | / | \ | d
| t/ s| r\ |
| / | \ |
===== =====
f e
decimal point seems to be unwired on PSC08-12
this is how ATTINY ports correspond to alphanumeric segments:
segment: p c r f d u e n b a h k g m s t
I/O pin: a1 a0 d6 d5 d3 d2 d1 d0 b7 b6 b5 b4 b3 b2 b1 b0
segment: p c r f d u e n b a h k g m s t
I/O pin: a1 a0 d6 d5 d3 d2 d1 d0 b7 b6 b5 b4 b3 b2 b1 b0
1 amsfe 0001 0010 0100 0110 23272
2 abcpugfe 1101 0110 1100 1000 54984
3 abcpdef 0001 1010 1100 0000 6848
4 hupcd 1100 1100 0010 0000 52256
5 abhupdfe 1001 1110 1110 0000 40672
6 abhupgdfe 1001 1110 1110 1000 40680
7 abcd 0100 1000 1100 0000 18624
8 abcdefghup 1101 1110 1110 1000 57064
9 abcdfeuph 1101 1110 1110 0000 57056
0 abcdefghtn 0101 1011 1110 1001 23529
knowing high/low bits order for ATTINY2313 we can make a table of the
segments to be lit in order to display a character
(i did it by hand, can you believe it?!).
PSC08-12 font table:
character segments lit bite blocks decimal
a ghkru 0010 0100 0011 1000 9272
b abcdefmps 1101 1010 1100 0110 56006
c abefgh 0001 0010 1110 1000 4840
d abcdefms 0101 1010 1100 0110 23238
e abefghu 0001 0110 1110 1000 5864
f abghpu 1000 0100 1110 1000 34024
g abdefghp 1001 1010 1110 1000 39656
h cdghpu 1100 1100 0010 1000 52264
i abefms 0001 0010 1100 0110 4806
j cdefg 0101 1010 0000 1000 23048
k ghnru 0010 0101 0010 1000 9512
l efgh 0001 0010 0010 1000 4648
m cdghkn 0100 1001 0011 1000 18744
n cdghkr 0110 1000 0011 1000 26680
o abcdefgh 0101 1010 1110 1000 23272
p abcdghpu 1100 1100 1110 1000 52456
q abcdefghr 0111 1010 1110 1000 31464
r abcghpru 1110 0100 1110 1000 58600
s abdefhpu 1001 1110 1110 0000 40672
t abms 0000 0000 1100 0110 198
u cdghef 0101 1010 0010 1000 23080
v ghnt 0000 0001 0010 1001 297
w cdghrt 0110 1000 0010 1001 26665
x knrt 0010 0001 0001 0001 8465
y kns 0000 0001 0001 0010 274
z abefnt 0001 0011 1100 0001 5057
* kmnprstu 1010 0101 0001 0111 42263
spc - 0000 0000 0000 0000 0
/ nt 0000 0001 0000 0001 257
1 amsfe 0001 0010 0100 0110 23272
2 abcpugfe 1101 0110 1100 1000 54984
3 abcpdef 0001 1010 1100 0000 6848
4 hupcd 1100 1100 0010 0000 52256
5 abhupdfe 1001 1110 1110 0000 40672
6 abhupgdfe 1001 1110 1110 1000 40680
7 abcd 0100 1000 1100 0000 18624
8 abcdefghup 1101 1110 1110 1000 57064
9 abcdfeuph 1101 1110 1110 0000 57056
0 abcdefghtn 0101 1011 1110 1001 23529
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