Student Innovation Showcase

Open-source hardware schematics, circuits, and code built by students aged 7 to 18 at Tech7Lab.

smart-iotHarare Hub Lab

Solar-Powered Soil Moisture & Precision Irrigation Station

By Tinashe M. (Age 12) • Tech Pioneers (Ages 11-14)

An automated water conservation system that reads real-time soil resistivity and triggers a 5V submersible water pump only when soil moisture dips below a critical threshold.

Components Used:

ESP8266 NodeMCU MicrocontrollerCapacitive Soil Moisture Sensor v1.25V Single Channel Optical Relay ModuleMini Submersible 5V DC Water Pump

48 lines of code

smart-iotBulawayo Regional Cohort

Dual-Axis Autonomous Solar Tracking System

By Chipo K. (Age 14) • Tech Pioneers (Ages 11-14)

A dual-axis solar platform that tracks peak sun azimuth and elevation using four light-dependent resistors and dual SG90 micro servos, boosting power capture by 28%.

Components Used:

Arduino Uno R3 / R4 CompatibleTowerPro SG90 Micro Servos (x2)Light Dependent Resistors (5mm LDR x4)

52 lines of code

roboticsHarare Hub Lab

Autonomous Obstacle-Evading Navigation Rover

By Farai T. (Age 10) • Junior Innovators (Ages 7-10)

A dual-motor wheeled robot equipped with an HC-SR04 sonar module that scans for walls, reverses, and steers away before colliding.

Components Used:

Tech7 2WD Smart Robot Chassis KitHC-SR04 Ultrasonic Distance SensorL298N Dual H-Bridge Motor Driver Module

42 lines of code

dronesHarare Innovation Hub

AI Edge Camera & Smart Agricultural Crop Guardian

By Kuda N. & Anesu R. (Age 17) • Future Engineers (Ages 15-18)

An autonomous solar-backed sentry unit running an ESP32-S3 Edge AI camera that classifies crop pests and sends instant alerts with image snapshots over LoRa / Wi-Fi mesh.

Components Used:

ESP32-S3 Dual-Core Xtensa AI BoardOV2640 2-Megapixel Camera ModuleHigh-Frequency Directional Piezo Buzzer

134 lines of code

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