History of vending machine development African use-cases: Milk, water, oil, soap vending Introduction to the H-TECH PLC: Benefits & uniqueness How smart vending breaks bulk and scales micro-businesses
Materials: MDF vs. Mild Steel vs. Stainless Steel Machine frame design for 20L, 50L, tabletop, and wall-mount types Nozzle positioning and food-grade component integration Mounting of electronics and peripherals
Introduction to H-TECH PLC board layout and terminals Programming the PLC: Setting cost-per-liter logic Connecting: Display Unit (LCD/7-Segment) Keypad Solenoid Valve Flow sensors EEPROM for transaction memory Writing EEPROM code for data retention (sales & volume) Setting up: Admin password Calibration mode Refill menu Welcome message Dispense cancellation
Calibrating flow rates for: Water Milk Cooking Oil Detergents Adjusting volume vs money Testing solenoid shut-off and leak-proofing Preventive maintenance basics Error codes and fault recovery logic Tools: Digital scale, measuring cylinder, stopwatch, flush meter.
Branding and sticker placement KEBS & County Health licensing Solar-powered vending integration GSM Module: SMS alerts for sales/refill IoT Add-ons (optional): Remote data pull, auto-refill alerts Pricing strategy: Profit margin vs refill volume Capstone Assignment: Prepare a vending machine business plan with: Cost breakdown Projected ROI Refilling & repair strategy
Upon successful completion of the course and passing of the final evaluation, trainees receive a certificate titled: ✅ Certified H-TECH Smart Vending Technician Including trainee name, batch number, and QR-verifiable ID.