50 Ways to leave your LEDs
iseries
Posts: 1,459
Ever since I got the Holiday Spin kit the WS2811 LEDs have been laying around on the floor waiting...
So I thought why not 3D print a panel and mount them in there since I don't have a tree to put them on and they would take up less space than leaving them lying around.
This was a fun head twister to map the LED's in the matrix to pixels in a character set.
I used the generic 5X7 character font and mapped it to the 6x8 WS2811 LED's. Then I sent the string to it and watched the letters go by.
Here is a video of it in action.
Here is the C program that made it all work.
Now I can put my LEDs in a box.
Mike
WS2811 LED Matrix
So I thought why not 3D print a panel and mount them in there since I don't have a tree to put them on and they would take up less space than leaving them lying around.
This was a fun head twister to map the LED's in the matrix to pixels in a character set.
I used the generic 5X7 character font and mapped it to the 6x8 WS2811 LED's. Then I sent the string to it and watched the letters go by.
Here is a video of it in action.
Here is the C program that made it all work.
#include <stdio.h>
#include <propeller.h>
#include "ws2812.h"
void DoDisplay(int);
void DoStr(char*);
void DoRastor(int, char);
// font 5x7 in 8x8 format line by line
long Font_57[] = {0x1f1f1f1f, 0x1f1f1f1f, //0x0
0x07030101, 0x3f1f0f07, //0x1
0x151b111f, 0x1f111b15, //0x2
0x1c1e1e1f, 0x10101818, //0x3
0x18040201, 0x01020418, //0x4
0x1f000000, 0x0000001f, //0x5
0x04040404, 0x04040404, //0x6
0x1111111f, 0x1f111111, //0x7
0x150a150a, 0x150a150a, //0x8
0x150a150a, 0x150a150a, //0x9
0x150a150a, 0x150a150a, //0xa
0x150a150a, 0x150a150a, //0xb
0x150a150a, 0x150a150a, //0xc
0x150a150a, 0x150a150a, //0xd
0x150a150a, 0x150a150a, //0xe
0x150a150a, 0x150a150a, //0xf
0x1f1f1f1f, 0x1f1f1f1f, //0x10
0x071b1d1e, 0x1e1d1b07, //0x11
0x00001f1f, 0x1f1f0000, //0x12
0x11111111, 0x11111111, //0x13
0x151b1b1f, 0x1f1b1b15, //0x14
0x1313131f, 0x1f131313, //0x15
0x1919191f, 0x1f191919, //0x16
0x1111111f, 0x1f111111, //0x17
0x1111111f, 0x1f111111, //0x18
0x1111111f, 0x1f111111, //0x19
0x1111111f, 0x1f111111, //0x1a
0x1111111f, 0x1f111111, //0x1b
0x1111111f, 0x1f111111, //0x1c
0x1111111f, 0x1f111111, //0x1d
0x1111111f, 0x1f111111, //0x1e
0x1111111f, 0x1f111111, //0x1f
0x00000000, 0x00000000, //0x20
0x01010101, 0x00010001, //0x21
0x0012091b, 0x00000000, //0x22
0x0a1f0a00, 0x00000a1f, //0x23
0x0e051e04, 0x00040f14, //0x24
0x04081111, 0x00111102, //0x25
0x02050502, 0x00160915, //0x26
0x0004080c, 0x00000000, //0x27
0x04040810, 0x00100804, //0x28
0x04040201, 0x00010204, //0x29
0x0e150400, 0x0004150e, //0x2a
0x1f040400, 0x00000404, //0x2b
0x00000000, 0x01020300, //0x2c
0x1f000000, 0x00000000, //0x2d
0x00000000, 0x00030300, //0x2e
0x04081010, 0x00010102, //0x2f
0x1519110e, 0x000e1113, //0x30
0x04040604, 0x000e0404, //0x31
0x0810110e, 0x001f0106, //0x32
0x0e10110e, 0x000e1110, //0x33
0x090a0c08, 0x0008081f, //0x34
0x100f011f, 0x000e1110, //0x35
0x0f01020c, 0x000e1111, //0x36
0x0408101f, 0x00020202, //0x37
0x0e11110e, 0x000e1111, //0x38
0x1e11110e, 0x00060810, //0x39
0x00030300, 0x00000303, //0x3a
0x00030300, 0x01020303, //0x3b
0x02040810, 0x00100804, //0x3c
0x001f0000, 0x0000001f, //0x3d
0x08040201, 0x00010204, //0x3e
0x0810110e, 0x00040004, //0x3f
0x1515110e, 0x001e010d, //0x40
0x11110a04, 0x0011111f, //0x41
0x0f11110f, 0x000f1111, //0x42
0x0101120c, 0x000c1201, //0x43
0x11110907, 0x00070911, //0x44
0x0f01011f, 0x001f0101, //0x45
0x0f01011f, 0x00010101, //0x46
0x0101110e, 0x000e1119, //0x47
0x1f111111, 0x00111111, //0x48
0x0404041f, 0x001f0404, //0x49
0x10101010, 0x000e1110, //0x4a
0x03050911, 0x00110905, //0x4b
0x01010101, 0x001f0101, //0x4c
0x15151b11, 0x00111111, //0x4d
0x15131111, 0x00111119, //0x4e
0x1111110e, 0x000e1111, //0x4f
0x0f11110f, 0x00010101, //0x50
0x1111110e, 0x00160915, //0x51
0x0f11110f, 0x00110905, //0x52
0x0e01110e, 0x000e1110, //0x53
0x0404041f, 0x00040404, //0x54
0x11111111, 0x000e1111, //0x55
0x0a111111, 0x0004040a, //0x56
0x15111111, 0x000a1515, //0x57
0x040a1111, 0x0011110a, //0x58
0x040a1111, 0x00040404, //0x59
0x0408101f, 0x001f0102, //0x5a
0x0303031f, 0x001f0303, //0x5b
0x04020101, 0x00101008, //0x5c
0x1818181f, 0x001f1818, //0x5d
0x0a040000, 0x00000011, //0x5e
0x00000000, 0x1f000000, //0x5f
0x000c0408, 0x00000000, //0x60
0x100e0000, 0x001e111e, //0x61
0x110f0101, 0x000f1111, //0x62
0x011e0000, 0x001e0101, //0x63
0x111e1010, 0x001e1111, //0x64
0x110e0000, 0x001e011f, //0x65
0x0f02120c, 0x00020202, //0x66
0x110e0000, 0x0e101e11, //0x67
0x110f0101, 0x00111111, //0x68
0x04060004, 0x000e0404, //0x69
0x080c0008, 0x06090808, //0x6a
0x09110101, 0x00110906, //0x6b
0x04040406, 0x000e0404, //0x6c
0x151b0000, 0x00111515, //0x6d
0x110f0000, 0x00111111, //0x6e
0x110e0000, 0x000e1111, //0x6f
0x110f0000, 0x01010f11, //0x70
0x111e0000, 0x10101e11, //0x71
0x031d0000, 0x00010101, //0x72
0x011e0000, 0x000f100e, //0x73
0x020f0202, 0x000c1202, //0x74
0x11110000, 0x00161911, //0x75
0x11110000, 0x00040a11, //0x76
0x11110000, 0x001b1515, //0x77
0x0a110000, 0x00110a04, //0x78
0x11110000, 0x0e101e11, //0x79
0x081f0000, 0x001f0204, //0x7a
0x0306061c, 0x001c0606, //0x7b
0x04040404, 0x04040404, //0x7c
0x180c0c07, 0x00070c0c, //0x7d
0x000d1600, 0x00000000, //0x7e
0x1f1f1f1f, 0x1f1f1f1f}; //0x7f
char Matrix[8][6] = { 7, 6, 5, 4, 3, 2,
8, 9, 10, 11, 12, 13,
19, 18, 17, 16, 15, 14,
20, 21, 22, 23, 24, 25,
31, 30, 29, 28, 27, 26,
32, 33, 34, 35, 36, 37,
43, 42, 41, 40, 39, 38,
44, 45, 46, 47, 48, 49 };
char Billboard[300];
#define PIN 16
int LEDs[50];
int main()
{
int i;
memset(LEDs, 0, sizeof(LEDs));
memset(Billboard, 0, sizeof(Billboard));
DoStr("Hello World ");
for(i=0;i<72;i++)
{
DoDisplay(i);
_waitms(250);
}
printf("Done\n");
while (1)
{
_waitms(1000);
}
}
void DoDisplay(int offset)
{
int i, j;
char x;
for (int j=0;j<6;j++)
{
x = Billboard[offset + j];
for (int i=0;i<8;i++)
{
if (x & 0x01)
LEDs[Matrix[i][j]] = 32;
else
LEDs[Matrix[i][j]] = 0;
x = x >> 1;
}
}
ws2812_set(PIN, LEDs, 50);
}
void DoRastor(int p, char x)
{
unsigned int u, l;
x = x * 2;
u = Font_57[x];
l = Font_57[x + 1];
for (int j=0;j<4;j++)
{
for (int i=0;i<8;i++)
{
Billboard[p+i] = Billboard[p+i] << 1;
Billboard[p+i] = Billboard[p+i] | (u & 0x01);
u = u >> 1;
}
}
for (int j=0;j<4;j++)
{
for (int i=0;i<8;i++)
{
Billboard[p+i] = Billboard[p+i] << 1;
Billboard[p+i] = Billboard[p+i] | (l & 0x01);
l = l >> 1;
}
}
}
void DoStr(char *data)
{
int i;
for (i=0;i<strlen(data);i++)
{
DoRastor(i * 6, data[i]);
}
}
Now I can put my LEDs in a box.
Mike
WS2811 LED Matrix
Comments
Can you post the 3D stl file for your panel?
Along a similar line is this product. See web page and attached image. He also created an Instructables article about his modules.
The creator of these 7 segment LED modules use 3 WS2811 chips to drive the segments, assigning each color channel on each chip to different segments. Granted the LED's are going to be a fixed color, but you can add them serially to easily add more digits.
I have 8 of these modules and have made a 3D printed mounting panel to hold them in groups of 4 but also allowing them to connect together in series for 8, 12, 16 digits on up.
I've created some P1 code to drive them and will need to adapt either my original code or leverage jonnymac's driver to run them with a P2.