16" Super Hourglass
16" Super Hourglass
This is an expansion of the Big Hourglass project.
It's double the size; 16" tall, 32x64 pixels (4 times as many pixels as the Big Hourglass)
and runs just as fast due to some cool RP2040 PIO code driving 4 banks of displays at a time.
Operational Features
- Speed Control Knob
- Brightness Knob
- Mode Button - selects continuous or reversing hourglass modes
- Color Button - selects the color scheme
Operating Modes
Continuous Hourglass
The sand falls out of the bottom of the hourglass and recirculates back into the top.
Reversing Hourglass
Gravity automatically reverses - the sand flows down, then the sand flows up.
Technical Features
- RP2040 200MHz Dual Core Processor
- Two 32x32 Custom LED panels
- 32 HT16K33 LED drivers
- 4 I2C Banks
- Custom RP2040 PIO 4 channel I2C driver
- DMA driven PIO's for non-blocking I2C
Specifications
- Power supply: 5V 2A
- Dimensions: 400mm x 220mm x 40mm
Design Documents
| Controller Board Schematic Diagram | super_hourglass_schematic.pdf |
| Display Board Schematic Diagram | 32x32_display_schematic.pdf |
| PCB Gerbers | Q401_gerbers.zip |
| 3D Print Files | super_hourglass_mechanical.zip |
| Arduino Source Folder | Arduino.zip |
| Arduino Main Code | Arduino.ino.txt |
| RP2040 PIO Code | i2c_blind_write.pio.txt |
Build Pictures
Blank PCB's
Assembled PCB's
Back Panels
Shell Parts
Shell Assembled
Interior Assembled
Back
Front