Monklap
A touchless ambient scent system that answers a clap
Monklap is a 3d-printed touchless diffuser with a shape of friendly monkey! Walk up and clap, and it responds with a pulse of fragrant mist from its mouth.
Downloads
02 — Overview
Scent,
on cue
Monklap is a wall-mounted or desktop diffuser shaped like a friendly monkey. Walk up and clap, and it responds with a pulse of fragrant mist from its mouth.
No buttons, no app, nothing to touch.
- 01
Touchless
Sound and proximity replace the spray trigger, for moments when your hands are busy, wet or full.
- 02
Interactive
An OLED face gives it a character and shows visible feedback for every state.
- 03
Ambient
A wick-fed ultrasonic atomizer releases a 1.5-second burst of mist on demand, not a constant stream.
03 — Target users
Monklap
is for…
Three groups who want scent to feel like a moment of play, not another chore.
- 01

Aesthetic & tech enthusiasts
Gen Z and millennials looking for desk-friendly home objects with sound-driven, physical interaction rather than another standard IoT device.
- Desk setups
- Character objects
- 02

Touchless, functional users
People who need instant, hands-free odor control while cooking, caring for pets, or whenever their hands are busy.
- Kitchens
- Pets
- Busy hands
- 03

Experiential commercial spaces
Pop-up stores, cafés and galleries that want interactive, sensory branding at the entrance — a scent that greets visitors.
- Pop-ups
- Cafés
- Galleries
04 — ESP32 & sensors
Two sensors, two outcomes
05 — Inside the face
Wireframe breakdown
- 01

Rest
Nobody near, or no sound
- 02

Wake
Someone near + clap or noise
- 03

Smile
Smiles back at the clap
- 04

Pulse
1.5 s burst of mist
06 — System & assembly
Fill, twist,
clap.
- 01
Fill the tank
Fill the tank with water and a water-soluble air freshener.
- 02
Twist into the head
The lid's bayonet locks into the head. A wick carries water up to the mouth.
- 03
Hang it and clap
A keyhole slot on the back hangs it on a single screw. No buttons. The face does the rest.

07 — Sketch & ideation
From a button to
a clap
Monklap began as a "Sound & Scent System": a comfort tool for public spaces that played music as people walked by, then sprayed fragrance on their wrists at the press of a button.
- Kept
- Walk-up wake, a digital face, scent as a reward
- Changed
- The button became a clap; the form became a monkey
08 — Process & lessons
Process & lessons
- Modeling
- Taking Monklap from rough sketches to 3D models in Rhino taught me that the more specific a plan is, the less time I lose troubleshooting changes later. I now understand not only how to model objects for real-world use, but also how to plan a project so each stage of making flows into the next with less friction.
- 3D printing
- I printed Monklap's parts from my Rhino models on a Bambu Lab A1 using Bambu Studio. Printing itself went smoothly, but some edges warped, so I had to sand those surfaces flat.
- Soldering
- I troubleshot shorts caused by broken cords, cold solder joints and tangled stripped wires. Each time, I reopened the board, resoldered the joints and added hot glue so the same problem wouldn't happen again.
- Assembly
- Using the joint structures I designed during modeling, I fitted the sensors, display and atomizer in order. My plans for the circuits and wick didn't always match reality, so it took a lot of trial and error. After four rounds of printing and fitting, I arrived at the current Monklap.
09 — Final prototype
Monklap, awake.
The finished Monklap: live OLED eyes, ultrasonic sensors in the nostrils and an atomizer in the mouth, all running on an ESP32.