/nb-iot-saml11-sim7070-solar-platform

MIT LicenseMIT

NB IoT platform

Based on:

  • MCU: Microchip SAML11
  • GSM, GPS: SIMCom SIM7070
  • Power: 2V Solar panel or DC 5V, MPPT harvester, 1xLiFePO4 18650

Hardware features:

  • Sensors IN:
    • 2xPulse, 3V3-48V tolerant, optocouple galvanic isolation. Supports NPN, PNP
    • 1xADC, 1V2-48V tolerant
    • 2x4 wires: USART, LIN client, I2C client/host, SPI client/host, RS485 (3V3), 3V3-5V tolerant, buffered
  • Sensors power OUT: 3V3, 12V or self-powered
  • Power: 1V5-2V5 Solar MPPT Harvester or DC 5V, LiFePO4/Li-ion charger, reverse polarity protection
  • power consumption values plot

Software features:

  • AWS integration
  • MQTTs
  • I2C BME280 temperature/humidity/pressure sensor support

Schematics:

Board:

Enclosure:

Gainta G113

BOM:

Interactive BOM