Heltec T114 V2 Meshnode Solar & Battery Powered

This is a compact solar powered enclosure designed for the Heltec T114 V2 board. 

Assembly video: 

Required hardware:

• Heltec T114 V2 board with screen
• 110 x 60 mm solar panel, 2.5 mm thick
• 1x or 2x 803450 LiPo batteries (3.7V)
• LoRa antenna (IPEX/U.FL)
  • Either flexible whip antenna
  • Or SMA female to MHF1 (IPEX) female adapter cable, max 5 cm + external antenna (for rigid mount version)
• Optional GPS module (for GPS versions)
• 5x M3x12 screws

If using two 803450 batteries, wire them in parallel. If using a single battery, secure it in place with Kapton tape.

Tested battery life in March (from March 14, a few days with full sun, the rest cloudy)
3000mAh: 11 days and 20 hours of battery life
1500mAh: 7 days and 11 hours of battery life
Tested on MeshCore v1.14

Three configuration options are available:

PLATE 6 - is designed for a rigid antenna using an SMA female bulkhead mount and also includes space for GPS wires. This is ideal for more permanent installations where you want a solid antenna connection and better mechanical stability.

PLATE 7 - supports the flexible standard antenna that the Heltec comes pre-packed with without GPS. This is the most compact setup and works well for simple indoor or window mounted nodes.

PLATE 8 - supports the flexible standard antenna that the Heltec comes pre-packed with and includes space for GPS wires. This is useful if you are running Meshtastic with location sharing enabled or using MeshCore with positioning features.

The goal of this model is to make it easy to build a clean, self contained Meshtastic or MeshCore node that you can place in a window, on a wall, or out in the field without a messy external wiring setup.

The front is made to fit a 110 x 60 mm solar panel with a thickness of 2.5 mm. The panel sits nearly flush with the front and feeds into the Heltec. Behind the solar panel there is space for up to two 803450 LiPo batteries wired in parallel. You can also run a single 803450 cell if you prefer. The available battery space inside the enclosure is 69 x 52 x 8 mm. If you use only one cell, it can simply be secured with Kapton tape as shown in the photos.

The case is tailored around the Heltec T114 V2 footprint and mounting points. The USB-C port is accessible from the side, and the screen and buttons are exposed through the front opening. There is also internal routing for antenna and optional GPS wiring, depending on the configuration you choose.

This enclosure works well with both Meshtastic and MeshCore firmware.

Meshtastic is a LoRa based, off grid mesh networking project that lets you send encrypted text messages and share location data without relying on cellular infrastructure. 

MeshCore is a lightweight alternative firmware focused on simplicity and efficient node to node communication. In both cases, the Heltec T114 V2 provides the LoRa radio, microcontroller, display, and power management, while this enclosure turns it into a practical solar powered node.

The design keeps everything compact and serviceable. The end can be removed to access batteries and wiring, and the internal layout keeps the solar panel, batteries, board, and antenna neatly separated. It is a straightforward build that results in a clean and durable standalone mesh node.

Mere om MeshCore: https://intraon.dk/meshcore

Consider boosting this model, it helps me get more filament.