Touch-free toilet paper, run by an ATtiny on a tiny power budget
2025 · CORNELL REV INCUBATOR
Marrs Solutions
A touch-free, automated toilet paper dispenser for hotels, for the startup Marrs Solutions.
LOG · WHAT IT IS AND WHAT IT DOES
A touch-free toilet paper dispenser for hotels and businesses: a motion sensor dispenses a set length of paper, so no one touches the roll and every roll gets used to the end. Its firmware runs on an ATtiny microcontroller on a very small power budget.
FURTHER READING
WHY
A new challenge: working with and programming an ATtiny, and extreme power optimization.
WHAT I WORKED ON
Firmware design and testing.
WHAT CAME OF IT
I believe it has since been piloted out in the world.
- OBJECT
- M24
- YEAR
- 2025
- CONTEXT
- Cornell Rev incubator
- CATEGORY
- work
- TYPE
- hardware + software
- STATE
- out in the world
- TOPICS
PLATES · 4
PLATE IThe prototype on the test board
PLATE IIWith its clear cover
PLATE IIIFrom the side
PLATE IVFrom the other side
MORE WORK HARDWARE
See all 18
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