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MODULAR RAK4631 SOLAR MESH NODE BUILD.

A flexible RAK4631 solar node with enclosure, 5 dBi ALFA antenna, removable board holder, USB-C pass-through and multiple sourcing options.

PlatformRAK4631PowerSolarAntennaALFA 5 dBiLevelIntermediate
Disclosure: Some links are affiliate links. No Bars Club may earn a commission from qualifying purchases at no additional cost to you. Full disclosure.

Parts list

PartLink
Enclosure
Outdoor project enclosure
Affiliate link ↗
PG7 gland
Cable gland
Affiliate link ↗
M6 magnets
Magnetic mounting option
Affiliate link ↗
RAK starter kit
Amazon option
Affiliate link ↗
RAK WisBlock Meshtastic starter kit
Purchase option
Affiliate link ↗
ALFA antenna
Amazon option
Affiliate link ↗
ALFA AOA-915-5ACM
Purchase option
Affiliate link ↗
IPEX to N-female bulkhead
RF pigtail
Affiliate link ↗
U.FL/IPEX to N-female pigtail
Purchase option
Affiliate link ↗
3D printed board holder
RAK19007/RAK4631 holder
Affiliate link ↗
PCM
Power/battery management component
Affiliate link ↗
USB-C waterproof bulkhead
External service/charging pass-through
Affiliate link ↗
Solar panel
Outdoor solar source
Affiliate link ↗
Silicone sealant
Weatherproofing
Affiliate link ↗
Self-fusing silicone tape
Connector sealing
Affiliate link ↗

Build process

  1. Print or prepare the board holder

    Use the linked RAK19007/RAK4631 holder or mount the electronics on insulated standoffs.

  2. Prepare the enclosure

    Plan the antenna bulkhead, USB-C pass-through, solar lead and optional magnetic mounting points before drilling.

  3. Install the radio and RF path

    Seat the RAK4631 securely and connect the U.FL/IPEX pigtail to the N-female bulkhead with minimal strain.

  4. Add power hardware

    Install the PCM/power components, connect the solar input and verify battery polarity before powering the radio.

  5. Weatherproof

    Seal the cable entries and RF connector. Keep the USB-C bulkhead gasket properly compressed.

  6. Deploy

    Attach the ALFA antenna vertically, place the panel for good sun exposure and test charging over multiple daylight cycles.

Build notes

  • The linked purchase option may use an affiliate reference.
  • Magnets are convenient on steel surfaces, but use a mechanical backup for exposed or elevated installs.
  • Avoid placing the battery where it will sit against a hot enclosure wall in direct sun.
Original build notes

This guide was adapted from No Bars Club's working build notes. Product availability, pricing and firmware can change, so verify compatibility before ordering or powering hardware.

Open Notion source ↗
Related planning

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