Jaavin Electronic Solution
Your One Stop Solution for Circuit Board Design, Development & Manufacturing
INDUSTRIAL . HYGIENE AUTOMATION
Hand Hygiene Station Controller
Pure logic design
Timer circuits
Sensor Interfacing
No microcontroller
🌐 Client: Australia
📄 PRODUCT OVERVIEW
A fully touchless hand hygiene station that guides users through a complete soap, wash, and dry sequence without any physical contact. Touchless operation reduced cross-contamination risk. Deployed in hospitals and commercial buildings. The controller board manages the entire automation sequence — from user detection through to drying completion — using only discrete logic and timer circuits, with no microcontroller or firmware involved.
🔧 DESIGN BACKGROUND
An Australian client had been developing this product with a PCB design house in Penang, but persistent firmware bugs and repeated delays stalled the project. When they brought the work to Jaavin, they set a bold constraint: redesign the controller board entirely without a microcontroller, eliminating firmware as a source of failure. Jaavin accepted the challenge and delivered a fully verified, working controller board within four months — built entirely from discrete logic gates and precision timer ICs.
➡️| INPUTS
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PIR motion sensor
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IR proximity sensor
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Thermocouple (temperature)
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Blower PWM signal
|➡️ OUTPUTS
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Solenoid valve
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Heater element
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Blower motor
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Sequence indicator LEDs
📷 PROJECT PHOTOS
📝KEY FEATURES & CAPABILITIES
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Fully touchless operation — no physical contact required at any stage
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Microcontroller-free design: all sequencing driven by discrete logic and timer ICs
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PIR motion sensor input for user presence detection and sequence initiation
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IR proximity sensor input for hand position detection during washing and rinsing
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Solenoid valve output for water flow control
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Heater and blower motor outputs for the drying phase
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Sequence indicator LED outputs for user guidance and status display
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Thermocouple temperature sensor input for heater safety monitoring
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Blower motor speed control via PWM signal input
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Delivered in 4 months after previous vendor failed to resolve firmware issues
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100+ PCBA units manufactured and supplied as OEM