1. Student: Taariq Ghansar Supervisor: Prof. Antoine Bagula
Smart Agriculture
Internet of Things in Motion
Term 4: Testing
Student: Taariq Ghansar
Supervisor: Prof. Antoine Bagula

2. Presentation Outline Problem Revisit Physical Layout Testing:
Unit Testing
Performance Testing
Environment Testing

3. Problem Revisit Deploying IoT in Agriculture.
Monitor soil and environmental characteristics through IoT sensors:
Soil Moisture
Humidity
Temperature
Monitoring several points across a field connected through the LR- WPAN (Low Rate Wireless Personal Area Network).
There is a large consumption of water. Water allocation for agriculture in South Africa is 60 percent according to the department of water affairs.

4. MQTT Broker & Subscriber
Physical Layout
MQTT Broker & Subscriber
Sensor Node 1 (Uno)
MQTT Publisher
Gateway (Yun)
Sensor Node 2 (Uno)
There is a large consumption of water. Water allocation for agriculture in South Africa is 60 percent according to the department of water affairs.

5. MQTT Client Parameters
Security Used:
None (Non-Sensitive Information).
Topics Used:
"agriculture/humidity"
"agriculture/temperature"
"agriculture/moisture"
Quality of Service:
Used QoS 0.
Fire once and forget, no acknowledgements, avoid re-sending.
There is a large consumption of water. Water allocation for agriculture in South Africa is 60 percent according to the department of water affairs.

6. Testing

7. Unit Testing
Uno (Sensor node) always transmits all characters to the serial monitor.
Each character of readings is printed:
Similar reading received by Yun:
Reading transmitted to MQTT subscriber:
(Demonstrated in video).
There is a large consumption of water. Water allocation for agriculture in South Africa is 60 percent according to the department of water affairs.

8. Performance Testing
Python subscriber receiving messages every seconds.
Minimal Latency. Advantage of QoS 0.
There is a large consumption of water. Water allocation for agriculture in South Africa is 60 percent according to the department of water affairs.

9. Environment Testing The sensor node can use a battery i.e. Power Bank.
Low power usage (few tens of milliwatts).
Pro Radio Modules.
Interrupts caused by loss of signal stops the gateway functioning.
There is a large consumption of water. Water allocation for agriculture in South Africa is 60 percent according to the department of water affairs.

10. Implementation Demo
TCP – Transport Layer
IP – Network Layer

11. Questions and Answers
TCP – Transport Layer
IP – Network Layer