newplumber
Senior Member
Hi
I built a OPEN sign thinking maybe some day I will have a small supply store.
The sign is made from a horrible PCB board but has awesome parts on it.
When I have time I add a small code....one thing that saved me from the chips going weird is a while back
Westaust55 told me to add caps close as a possible to the 74hc595 chips
Now it works awesome like someone else built it ...
here is small clip ..(I tried to add sound explaining stuff but my phone mic is so jammed with dirt ..I sounded like I was talking in a insulation bale)
https://www.youtube.com/watch?v=HV3Sjh48nDg
I used 92 green leds ...I put paper in front of them because it makes a better video
what you see is 90 leds ....since I used 2 leds in series a few of them didn't line up right to match a letter...so instead trying to figure out the right brightness with
a resistor/ single led I just added a few dummy leds behind the scenes
Your friend
Mark
BTW ... if I am missing stuff on the board picture....I'm sure its underneath!
UPDATE: added a code
I built a OPEN sign thinking maybe some day I will have a small supply store.
The sign is made from a horrible PCB board but has awesome parts on it.
When I have time I add a small code....one thing that saved me from the chips going weird is a while back
Westaust55 told me to add caps close as a possible to the 74hc595 chips
Now it works awesome like someone else built it ...
here is small clip ..(I tried to add sound explaining stuff but my phone mic is so jammed with dirt ..I sounded like I was talking in a insulation bale)
https://www.youtube.com/watch?v=HV3Sjh48nDg
I used 92 green leds ...I put paper in front of them because it makes a better video
what you see is 90 leds ....since I used 2 leds in series a few of them didn't line up right to match a letter...so instead trying to figure out the right brightness with
a resistor/ single led I just added a few dummy leds behind the scenes
Your friend
Mark
BTW ... if I am missing stuff on the board picture....I'm sure its underneath!
UPDATE: added a code
Code:
#picaxe 20X2 'SIMPLE CODE FOR "OPEN" LED SIGN
#NO_DATA
'This code is for a controlling 90 LEDS that SPELL the word "OPEN"
'1st led is started at the "O" and connected to 74hc595 first chip pin 1
'46th (last) led is ended at the "N" and connected to 74hc595 sixth chip pin 6
' using 6 74hc595 chips
'pin b.5 = 595 chip pin 11
'pin b.3 = 595 chip pin 12
'pin b.4 = 595 chip pin 14
'why pins b.3 - b.5? because the lenght of the wires that reached picaxe :)
setfreq m64
let DIRSB = %00111000
let DIRSC = %00000000
'76543210
Symbol nbit = B0 'B0
Symbol l4nbit = B1 'B1
Symbol LP1 = B2 'B2 LooP variable
'Symbol ---- = B3 'B3 pause time
'Symbol PT = B4 'B4
Symbol PT = w2 'B5 Pause Time 1
'Symbol PT1 = B6 'B6
Symbol PT1 = W3 'B7 Pause Time 2
'Symbol ---- = b8 'B8
'Symbol ---- = b9 'B9 W4
'Symbol ---- = b10 'B10
'Symbol ---- = b11 'B11 W5
'Symbol ---- = b12 'B12
'Symbol ---- = b13 'B13 W6
'Symbol ---- = B14 'B14
'Symbol ---- = B15 'B15 W7
'Symbol ---- = B16 'B16
'Symbol ---- = B17 'B17 W8
'Symbol ---- = b18 'B18
'Symbol ---- = b19 'b19 W9
'Symbol ---- = b20 'b20
PT = 5
PT1 = 800
DO
TURN_OFF_ALL: ' turns off all leds
FOR lp1 = 0 to 5 :nbit = %00000000 :gosub shift0
NEXT : gosub display : pause 1000
SCROLL_ON_O_to_N: ' scrolls leds ON from 1st to 46th in time
for lp1 = 0 to 5:nbit = %11111111: gosub shift1 :next :pause PT1
SCROLL_OFF_O_to_N: ' scrolls leds OFF from 1st to 46th in time
for lp1 = 0 to 5:nbit = %00000000: gosub shift1 :next :pause PT1
TURN_ON_ALL: ' makes all leds on and paused for 1-2 seconds
FOR lp1 = 0 to 5 :nbit = %11111111 :gosub shift0
NEXT :gosub display :Pause 20000
O_OP_OPE_OPEN: ' below code turns on each letter in time ...O...OP..OPE..OPEN
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %11000000: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT :gosub display: pause pt1 '-----O only on
'12345678
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %11110000: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT :gosub display: pause pt1 '-----OP only on
'12345678
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %00000000: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT :gosub display: pause pt1 '-----OPE only on
'12345678
nbit = %11111100: gosub SHIFT0 :pause PT ' <-- only has 46 pins used
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT
nbit = %11111111: gosub SHIFT0 :pause PT :gosub display: pause pt1 '-----OPEN on
'12345678
LOOP
SHIFT0:
low b.5 'low leg 11
low b.3 'low leg 12
low b.4 'low leg 14
for l4nbit = 0 to 7
if bit0 = 0 then :low b.4:else:high b.4:endif
high b.5:low b.5:nbit = nbit/2 :next
RETURN
DISPLAY:
high b.3
low b.3
RETURN
SHIFT1:
low b.5 'low leg 11
low b.3 'low leg 12
low b.4 'low leg 14
for l4nbit = 0 to 7
if bit0 = 0 then :low b.4:else:high b.4:endif
high b.5:low b.5:nbit = nbit/2
high b.3
low b.3:pause PT1:next
RETURN
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