Bong 69Wall Planner
Plan a wall before you buy panels. Pick the panels, the wall size and how many ports to use; the estimates update as you change them. The same planner is built into every HUB75 Bridge.
Your setup
Pixels across × down, printed on the panel or its listing.
Panels are split as evenly as possible across the ports.
Wall, seen from the front
Estimate
Checks
Same panels, other port counts
| Ports | Panels per port | Refresh | Frames drawn |
|---|
Rough guide, not a guarantee. Refresh comes from the bridge's own timing model, which matches measured walls within about 3 Hz. Frame rate is fitted to measured walls of 4 to 32 panels of 64 × 64 and 64 × 32 on 1 to 4 ports (firmware 2.6.1) and is within about 5%, on the low side near the limits. Other panel sizes are scaled by pixel count and have not all been measured. Panels must use standard 1/2-height scanning (for example 1/32 scan on 64-row panels, 1/8 on 32 × 16); outdoor 1/4- and 1/8-scan panels are not supported.
Measured layouts
64 × 64 panels at 11-bit color (firmware 2.6.1).
4 ports × 4, 138 Hz refresh. A 256 × 256 test wall on a v2.0 board drew 59.9 fps for 12 hours with no stalls, tears or reboots.
4 ports × 6, the usual xLights frame rate, at 108 Hz refresh. A 384 × 256 test wall on a v2.0 board drew 39.9 fps for 12 hours with no stalls, tears or reboots.
All measurements
| Layout | Panels | Pixels | Refresh | fps at 40 sent | fps at 60 sent |
|---|---|---|---|---|---|
| 1 port × 4 | 4 | 256 × 64 | 138 Hz | 40 | 60 |
| 1 port × 6 | 6 | 384 × 64 | 108 Hz | 40 | 60 |
| 1 port × 8 | 8 | 512 × 64 | 88 Hz | 40 | 60 |
| 2 ports × 4 | 8 | 256 × 128 | 138 Hz | 40 | 60 |
| 2 ports × 6 | 12 | 384 × 128 | 108 Hz | 40 | 60 |
| 2 ports × 8 | 16 | 512 × 128 | 88 Hz | 40 | 60 |
| 3 ports × 4 | 12 | 256 × 192 | 138 Hz | 40 | 60 |
| 3 ports × 5 | 15 | 320 × 192 | 121 Hz | 40 | 60 |
| 3 ports × 6 | 18 | 384 × 192 | 108 Hz | 40 | 60 |
| 3 ports × 8 | 24 | 512 × 192 | 89 Hz | 40 | 43.2 |
| 4 ports × 4 | 16 | 256 × 256 | 138 Hz | 40 | 60 |
| 4 ports × 5 | 20 | 320 × 256 | 121 Hz | 40 | 59.9 |
| 4 ports × 6 | 24 | 384 × 256 | 108 Hz | 40 | 45.7 |
| 4 ports × 8 | 32 | 512 × 256 | 88 Hz | 34.5 | 33 |
Smaller panels
Shorter panels have fewer rows to scan, so they refresh faster. Measured at 11-bit color.
| Panels | Layout | Picture | Frame rate | Refresh |
|---|---|---|---|---|
| 64 × 32 | 16 (4 ports × 4) | 256 × 128 | 60 fps | 276 Hz |
| 64 × 32 | 8 on one port | 512 × 32 | 60 fps | 176 Hz |
| 64 × 32 | 32 (4 ports × 8) | 512 × 128 | 59.9 fps | 177 Hz |
| 32 × 32 | 16 (4 ports × 4) | 128 × 128 | 60 fps | 371 Hz |
32 × 32 panels go in pairs: each chain must be a multiple of 64 pixels wide, so 2 or 4 on a port work, 1 or 3 don't.
Good to know
- Spread panels across ports. Refresh depends on how many panels are on one chain, not on how many ports you use. 16 panels as 4 × 4 refresh at 138 Hz; as 2 × 8 only 88 Hz, at the same 60 fps. Below about 100 Hz, phone cameras start to show flicker bands.
- Bigger walls. Past 24 panels the frame rate drops (4 × 8: 34 fps at 40 sent). For more, use several bridges side by side; the DDP Streamer can span one picture across them.
- 8-bit color. About 1.7 × the refresh and about 20% less frame preparation time, with fewer shades in dark scenes.
- Upside-down ports. Turning a port over costs time on big walls, because the board turns every frame: 24 panels at 40 fps drop to about 35 fps. Small walls are not affected.
- Chain limits. A row must fit 8,192 clock cycles: 10 panels per port at 11-bit, 13 at 8-bit.