Menu

Onboard Gateway | Hackaday Dream Team 2020

The Onboard Gateway is a 134.11 mm x 62.48 mm PCB that integrates the 3 main components (ESP32, LoRa and USB LiIon/LiPoly charger).

Main Components

Main components of the Onboard Gateway v1.0.

Sources:

Schematic

Schematic of the Onboard Gateway v1.0.

For more information about the design check the original post in the project's page.

Layout

PCB Layout of the Onboard Gateway v1.0.

PCB

PCB Design.

PCB Design: LoRa Module.

PCB Design: ESP32.

PCB Design: Battery Connection.

PCB Design: Front and Back.

Assembly

Components of the Onboard Gateway v1.0.

Components List:

  1. TERM BLK 2P SIDE ENT 5.08MM PCB
  2. CONN HEADER R/A 2POS 2.5MM
  3. CONN HEADER VERT 2POS 2.54MM
  4. CONN HEADER VERT 2POS 2.54MM
  5. CONN HDR 6POS 0.1 TIN PCB
  6. 2POS JST cable (included in the USB LiIon/LiPoly charger)
  7. USB LiIon/LiPoly charger
  8. PCB Onboard Gateway V1.0
  9. CONN HEADER VERT 2POS 2.54MM
  10. RES 249 OHM 1/4W 1% AXIAL
  11. RES 249 OHM 1/4W 1% AXIAL
  12. TERM BLK 2P SIDE ENT 5.08MM PCB
  13. CONN HEADER VERT 6POS 2.54MM
  14. CONN HDR 2POS 0.1 GOLD PCB
  15. CONN HEADER VERT 3POS 2.54MM
  16. CONN JUMPER SHORTING .100" GOLD
  17. CONN HDR 19POS 0.1 TIN PCB
  18. ESP32-DEVKITC-32D
  19. CONN HDR 19POS 0.1 TIN PCB
  20. CONN HDR 16POS 0.1 TIN PCB
  21. CONN HDR 12POS 0.1 TIN PCB (I used 2 CONN HDR 6POS 0.1 TIN PCB in the image)
  22. CONN HDR 9POS 0.1 GOLD PCB
  23. CONN HEADER VERT 2POS 2.54MM
  24. CONN HEADER VERT 2POS 2.54MM
  25. CONN HEADER VERT 2POS 2.54MM
  26. CONN HEADER VERT 2POS 2.54MM
  27. RES 100 OHM 3W 5% AXIAL
  28. RES 100 OHM 3W 5% AXIAL
  29. RES 100 OHM 3W 5% AXIAL
  30. RES 100 OHM 3W 5% AXIAL
  31. CONN HDR 5POS 0.1 GOLD PCB
  32. RFM95W LoRa Radio
  33. CONN HEADER VERT 16POS 2.54MM (included in RFM95W LoRa Radio)

For a detailed Bill of Materials visit the following post/a>.

For a detailed explanation about the soldering and assembly procedure visit the following post.

Wiring Diagrams

The following diagram presents the physical connections of the different boards and components of the Onboard Gateway, that includes:

  • 3.7V 1 Cell Battery
  • Leds (Charge, Done and 4 Miscellaneous)
  • PCB Board for the Onboard Gateway V1.0
  • 5V Charger (only used to charge the battery)
  • Micro USB Breakout Board
  • Switch

Wiring diagram for the Onboard Gateway v1.0.

  User Interface

For more information about the GUI visit the following post.

Future Improvements

For more information about the recommended future improvements for the electronic design visit the following post.

Posted In:
Embedded Hardware
Tags:
ESP32 LoRa Battery Charger PCB
Posted by Leonardo Ward

Electronics Engineer