Meshtastic boards

Hello! Sometimes, and lately often, I make boards for meshtastic, and in search of the optimal solution for this project, a large number of their variations have accumulated. So I decided to post them. They will all be here. Appearance of the board, diagram and file for assembling the firmware and possibly the firmware itself.

Version's list

• DIY_V1 (green)
• DIY_V1 (blue)
• t3s3 (white) LILYGO T3S3 V1.0 + Case + GPS ATGM336H
• t3s3 (red) based on LILYGO T3S3 V1.0
• t3s3 (blue) based on LILYGO T3S3 V1.0
• NRF52840 based on E-Byte E104-BT5040U

DIY_V1 (green)

The very first board wired for Mestastic. There are several errors.

• E22 LORA module (22 or 30dbm) 868 or 433 (22-30-33 dbm)
• Notify LED + Buzzer

DIY_V1 (blue)

Second board wired for Mestastic. There are several errors.

• E22 LORA module (22 or 30dbm) 868 or 433 (22-30-33 dbm)
• Notify LED + Buzzer

t3s3 (white)

Just LILYGO T3S3 V1.0 + nice case

• LILYGO T3S3 V1.0
• GPS ATGM336H
• Notify bright LED
• 18650 + BMS
• LORA_T3S3.3mf Case 3D printed
• LORA_T3S3.svg file for laser cut

t3s3 (red)

• LILYGO T3S3 V1.0 with E22 LORA module (22 or 30dbm) 868 or 433 (22-30-33 dbm)
• GPS ATGM336H Module
• 18650 2pcs holder
• Li-Ion charger 1A + Temperature battery protection
• BMS 1S (overcharge and over discharge)
• SD card
• UPS 5v (dc-dc buck boost)
• Notify LED + Buzzer (+ Vibro)
• Temp Sensor BME280 or SHT31 (recomended)
• Clock PCF8563
• Powered in the range 5-26V

Added a 3D model of the case for printing on a printer

t3s3 (blue)

• LILYGO T3S3 V1.0 with E22 LORA module 22dbm
• GPS ATGM336H Module
• Temp Sensor BME280 or SHT31 (recomended)
• Powered in the range 5-26V

NRF52840 based on E-Byte E104-BT5040U

Best power consumption. E-Byte E104-BT5040U + E22-900M22S on 22dBm Rx 0.7W and Tx 0.33W Also tested and worked on nRF52840 Dongle, but to hard for soldering analog pin P0.04

• E-Byte E104-BT5040U CPU nrf52840
• E22 LORA module (22 or 30dbm) 868 or 433 (22-30-33 dbm)
• On-board QSPI Flash MX25R1635F
• Temp Sensor BME280 or SHT31 (recomended)
• Pin's for i2c OLED
• GPS ATGM336H Module + wake pin's hack
• 5V Power
• Battery voltage detector pin's

Gerber-NRF52840.zip - gerber files for production

XIAO BLE and E-Byte E22 1W board

I think this is the best price for the complexity of soldering, output power and electricity consumption.

• Read README inside of project
• Seeed Studio XIAO nRF52840 + E22-900M30S 1W or E22-900M22S 0.14W or E22-900M33S 2W!
• GPS ATGM336H Module
• Temp Sensor SHT31
• Powered in the range 5V only