Table of Contents

Objective
- Self Telemetry
- Physical

Brainstorming page for GSM Solar Gateways.

5V 2W Solar Panel
- Need to compare Adafruit vs Ebay
MCP73871 MPP Charger - Datasheet
- Needs to be configured for MPP of selected panel
- Battery Temperature Monitoring should be fitted (mainly for low temperature concern)
LiPo Battery

ATMega328P
RFM69HW
SIM900

Objective

To Provide a Fit-And-Forget UKHASnet gateway for installation on remote structures.

Self Telemetry

Battery Voltage

maybe:

Battery Temperature with ds18b20 (so as not to accidentally interfere with the charger thermistor)

Physical

Waterproof box to be fitted to a vertical pole.
Solar panel slanted at 45 degrees towards the South (mounted on top?)
Internal GSM Antenna (chip or window-mount stuck to inside)
868 MHz Dipole antenna out through large cable grommet on underside.