Back to list

Ebyte EoRa-S3-900TB

Ebyte (CDEBYTE)

868 MHz 915 MHz SX1262 ESP32-S3FH4R2 22 dBm
DIY Modules Budget

Development board from Ebyte (Chengdu EBYTE Electronic Technology) based on the ESP32-S3FH4R2 (2 MB PSRAM, 4 MB Flash) with an integrated Ebyte E22-900MM22S LoRa module (SX1262, 22 dBm). Features: 0.96'' OLED display, SD card slot, USB-C, LiPo charging circuit. Compact size (27 × 64 mm). Community firmware starting at v1.11.0 (Companion BLE/USB, Repeater, Room Server). Cost-effective alternative to Heltec boards.

Hardware Specifications

MCU

ESP32-S3FH4R2

RAM

2 MB

Flash

4 MB

Display

OLED (0.96'' 128x64)

Button Count

2

Has LEDs

true

Weight

12 g

Dimensions

27 x 64 x 12

LoRa Specifications

LoRa Chip

SX1262

Frequency Band

868 MHz, 915 MHz

Max. TX Power

22 dBm

Antenna Type

U.FL/IPEX

Typical Range

14 km

Connectivity

WiFi

true

Bluetooth

true

GPS

false

Power

USB Type

USB-C

Battery Connector

JST LiPo-Ladekreis (extern)

Solar Support

false

Power Consumption (Idle)

30 mA

Power Consumption (TX)

110 mA

Firmware Support

meshcore-dev/MeshCore Official
Room Server v1.16.0 28.09.2025 Release

Release notes: https://blog.meshcore.io/2026/06/06/release-1-16-0

Repeater v1.16.0 28.09.2025 Release

Release notes: https://blog.meshcore.io/2026/06/06/release-1-16-0

BLE Companion v1.16.0 28.09.2025 Release

Release notes: https://blog.meshcore.io/2026/06/06/release-1-16-0

USB Companion v1.16.0 28.09.2025 Release

Release notes: https://blog.meshcore.io/2026/06/06/release-1-16-0

mattzzw/MeshCore-Evo Community
Repeater v1.15.0-evo_0.1.21 14.01.2026 Release

⚠️ Check that radio.rxgain(on) and flood.advert.base (0.308) are set correctly after flashing! ⚠️

This build is based on official MeshCore 1.15.0 dev branch (as of 25-May-2026 and additionally includes the following unmerged upstream PRs/changes:

Additional changes:
  • Flood adverts are disabled (flood.advert.interval set to 0) by default
  • :new: modified PR1810 to not block flood adverts but only PAYLOADTYPEGRPTXT and PAYLOADTYPEGRPDATA so that some limited flood advert distribution can be managed via PR2553 to support e.g. observer maps.
Changelog:
  • Based on dev v1.15.0 as of 25-May-2026
Full Changelog: https://github.com/mattzzw/MeshCore-Evo/compare/v1.15.0-evo0.1.20...v1.15.0-evo0.1.21
MichTronics/MeshCoreNG Community
Repeater v1.0.1 17.05.2026 Release

Full Changelog: https://github.com/MichTronics/MeshCoreNG/compare/bridge-tcp-v1.0.5...repeater-v1.0.1

BLE Companion v1.0.1 17.05.2026 Release

Full Changelog: https://github.com/MichTronics/MeshCoreNG/compare/bridge-tcp-v1.0.5...companion-v1.0.1

USB Companion v1.0.1 17.05.2026 Release

Full Changelog: https://github.com/MichTronics/MeshCoreNG/compare/bridge-tcp-v1.0.5...companion-v1.0.1

Room Server v1.0.1 17.05.2026 Release

Full Changelog: https://github.com/MichTronics/MeshCoreNG/compare/bridge-tcp-v1.0.5...room-server-v1.0.1

Automatic sync from different repositories