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samuk
4.5 KiB
4.5 KiB
WIP Solar repeater
Warning: Currently untested. Fabricate at own risk
- WIP Carrier board 2x Xiao connected with UART, Solar/ battery control, Mikro click header ~$10pc
- WIP 2.4Ghz Lora Click board SX1280 in Mikro format ~$10pc
- WIP Optional supplimental/ standalone battery board Provides 3.3v with over/under voltage & temp protection ~$5pc
- XIAO NRF52 Nrf52/ ESP32 etc ~$15 (other Xiao boards also possible)
Todo: Updated schematics
Ancillary components
- Enclosure ~$22
- 5V panel ~$10
- 21700 battery ~$6
What is it for?
- Primary use case is to explore bridging Meshcore (868Mhz) over Retuculum (2.4Ghz) some discussion of that here
- It could also be used with two 868Mhz radios on different channels if sufficient antenna spacing was achieved, eg the Mikro click boards
- It could just be a single radio 868Mhz repeater with an empty slot
Alternate power solutions
- ALT Proprietary battery (Expensive)
- Charge control (W temp, no 3.3v)
- Aliexpress Charge control (no temp control) (no 3v regulation of low voltage protection)
Alternate PCB's
| Project | Link | MCU | LoRa | Standout Features |
|---|---|---|---|---|
| meshtastic设备-Fucktec | oshwhub.com | nRF52 | LoRa module | FakeTec variant with screen, GPS, and an onboard MPPT solar charge controller squeezed into the original FakeTec footprint; circuits are modular so sections can be omitted Pro Micro |
| meshtastic nrf52840 mgt | oshwhub.com | nRF52840 (Pro Micro) | LoRa module | Fully handmade handheld node; reworked antenna layout specifically for the Pro Micro footprint; ¥100 to clone |
| meshtastic-mini | oshwhub.com | nRF52840 | LoRa module | Single-node device with optimised nRF52840 Bluetooth antenna section for extended BT range |
| meshtastic太阳能端 | oshwhub.com | nRF52 | LoRa module | Dedicated solar repeater/endpoint; solar panel power is selectable based on target power budget |
| TinyLoRa-C3 MV 手持 | oshwhub.com | ESP32-C3 | LLCC68 / SX1262 (22–29 dBm) | Most feature-packed handheld on the list: barometric pressure, temp/humidity, 5-way joystick, GPS, LiPo, buzzer, WiFi, BT — one board; also supports MeshCore |
| 基于ESP32C6的全功能meshtastic节点 | oshwhub.com | ESP32-C6 | Ebyte E22-400M30S | Display + buzzer + RGB LED + joystick, all hardware-verified; one of the only ESP32-C6 Meshtastic designs on the platform |
| TinyLora-C3 V4.1 | oshwhub.com | ESP32-C3 | 22/29/30/33 dBm modules | Wide-input power (USB-C, 7–36 V, or LiPo), built-in solar charge circuit, supports high-power modules up to 33 dBm; Meshtastic & MeshCore compatible |
| lorawan迷你终端-随身meshtastic-温湿度计 | oshwhub.com | ESP32-C3 | SX1262 | Pocket-sized verified build with onboard AHT30 temperature/humidity sensor for environmental mesh telemetry |
| SakuraPi Pocket Namiji | oshwhub.com | — | LoRa module | Ultra-compact community platform for Meshtastic/LoRaMesh with full 3D-printable case files and firmware docs; flexible power; designed for solar nodes and indoor fixed deployments |
| TinyLoRa-C3开发板 | oshwhub.com | ESP32-C3FH4 (~¥7) | LLCC68 / multi-module | Base dev board for the kangyuzhe lineup; 1 mm PCB for improved antenna performance; 5 LoRa modules tested and verified |