Generation 1 · AFRIDEV HANDPUMP SENSOR V-1
Delivered August 2015
Data provided
- Liters per hour
Highlights
- 10 years of battery life
- Data published to charity: water
- Designs and code open sourced
- 15% device failure over three years
Challenges
- Accuracy of data
- Water tight seals
- User experience in the field
- Existing GSM network only covered ~80% of locations
- High cost of data: $1.50 per unit per month
Generation 2 · TAPSTAND SENSOR V1
Delivered March 2017
Data provided
- Liters per hour
Highlights
- New housing
- New inline turbine sensing mechanism
- Custom IoT platform built for device management
Challenges
- Shipping and importation
Generation 3 · AFRIDEV HANDPUMP SENSOR V-2
Delivered April 2019
Data provided
- Liters per hour
- GPS
- Temperature
- Device performance
Highlights
- Enhanced algorithm
- Improved enclosure
- Automatic geolocation
- AWS cloud computing platform
Challenges
- Software integration
- Cost of data: $1.50 per unit per month
- Rapid evolution of cloud computing & IoT made original systems obsolete
Generation 4 · INDIA MARK II HANDPUMP SENSOR V-1 (Pictured)
Delivered October 2021
Data provided
- Liters per hour
- GPS
- Temperature
- Device performance
- Humidity
Highlights
- Battery life of 10+ years
- Installs securely in 15 minutes
- Measures water flow 20x per second
- Magnetometer for predictive analytics
- Diverse telecom options
- Improved UX
Challenges
- Completely new mechanical design
- Re-evaluating all the electrical components
- Developing the predictive algorithm