01
Material ambiguity
The physical system needed to make a useful distinction between plastic and non-plastic material at the point of disposal.
PRJ—03Connected waste system
HolyBin
An IoT-assisted waste workflow for material detection, verified collection, and realtime operational tracking.
(Overview)
Smart waste collection needs more than a sensor. It needs a traceable workflow.
HolyBin connects material recognition with the people responsible for collection. The system distinguishes plastic from non-plastic waste, then records collection activity through a web-based operational flow.
Type
IoT & operational platform
Role
Software engineering team
Focus
Detection · validation · tracking
Status
Working prototype
(Introduction)
HolyBin connects physical waste detection with verified pickup activity so the operation can be observed from disposal to collection.
(Problem)
Detection alone could not solve the operational gap after waste entered the bin.
A smart bin can classify material, but the process still becomes invisible when there is no reliable way to verify collectors, record pickups, and monitor activity over time.
02
Unverified pickup
Collection activity required a simple identity mechanism so each pickup could be associated with the responsible person.
03
Missing history
Without a shared operational record, administrators could not easily monitor recent activity or investigate what happened earlier.
(Approach)
Design the physical event and the digital record as one connected system.
The team treated detection, collector validation, and administration as a single lifecycle. Sensor events had to become readable operational state inside the web application.
Define the disposal lifecycle01
Connect sensor classification02
Issue unique pickup codes03
Expose realtime admin history04
(Solution)
A connected loop from material detection to confirmed collection.
HolyBin pairs the IoT prototype with two human-facing experiences: a lightweight validation flow for collectors and an administrative dashboard for live monitoring and historical review.
01
Material detection
Sensors support automatic classification between plastic and non-plastic waste.
02
Unique pickup code
Collectors validate an assignment through a code-based attendance and pickup flow.
03
Realtime dashboard
Administrators can monitor collection activity as operational state changes.
04
Collection history
Completed activity is retained so the process remains traceable after pickup.
05
Role-based access
Collector and administrator experiences expose only the actions each role needs.
06
IoT-to-web bridge
Physical signals and web interactions share one coherent operational model.
(Outcome)
A software-and-hardware prototype that makes waste collection easier to verify and follow.
HolyBin became a practical exercise in coordinating sensor behavior, realtime data, interface state, and human responsibilities.
The result shows that a connected product becomes useful when the physical event and the operational record tell the same story.