Table of Contents
Planned Sea Buoys
Prototype 1
- 1x Atmega328 (??)
- 1x RFM69HW (??)
- 1x uBlox Pico Breakout (£23.99)
- 1x DS18B20 Temperature Sensor (??)
- 1x 3.3V LDO? (low quiescent required)
- 1x Asda 400ml Beaker (£1)
- 10x Asda Long Life AA Batteries (£3)
Power
Energy: 1.5V * 2Ah * 10 = 30Wh (Assuming regulator efficiency = 100% until known)
Quiescent
- RFM69HW: 0.1uA
- AVR: 5uA?
- GPS: 0.1uA (disconnected Vcc, leave backup connected? - check kraken schematic to steal ideas)
- LDO: 2uA?
- Total: 7uA (2 years)
GPS Running in Power-Save
- RFM69HW: 0.1uA
- AVR: 2mA?
- GPS: 5mA
- LDO: 2uA?
- Total: 7mA (54 days)