MeshCoreTel-firmware/docs/boards.md

Board Comparison

This page is meant to help you choose a board, not just list every technical detail.

If you only want a quick answer:

• for a roof-mounted or set-and-forget MQTT repeater, start with heltec_v4, heltec_v4_tft, Station_G2, or T_Beam_S3_Supreme_SX1262
• for an app-first Wi-Fi companion, headless boards are fine and often simpler
• if you want an onboard screen people will actually use, prefer TFT boards
• if you want a low-power status screen, prefer e-paper boards

The tables below are built from the repo's PlatformIO board metadata and variant build flags.

• Target is the short board name used in this comparison page. Release filenames and local build commands still use the full env names such as heltec_v4_repeater_mqtt.
• MCU shows the chip family only. Actual runtime clock can vary by env and board configuration.
• RAM is the MCU's built-in RAM.
• PSRAM is extra memory on some boards. More PSRAM usually means more headroom for UI, MQTT, and future features.
• GPS uses ✅ when present and is blank when absent.
• SD uses ✅ when the board is currently known to support the SD-backed archive path in EastMesh, 🧪 when the hardware likely supports TF/microSD but the board-specific integration still needs validation, and is blank when there is no current SD/archive support note.

Start Here

• Pick an ESP32-S3 board with 16MB flash and PSRAM if you want strong overall headroom for MQTT plus UI: heltec_v4_tft, heltec_v4, Station_G2, LilyGo_TBeam_1W.
• Pick a TFT board if this will be used as a human-facing companion or field node: heltec_v4_tft, heltec_tracker_v2, LilyGo_TDeck, Heltec_T190.
• Pick e-paper if you want a status screen with lower idle draw and less frequent refresh: Heltec_E213, Heltec_E290, Heltec_Wireless_Paper, ThinkNode_M5.
• Pick a headless board if this is mainly a fixed MQTT gateway and screen space is not useful: Xiao_C3, RAK_3112, Tenstar_C3, Heltec_ct62, Generic_E22.
• Pick a headless Wi-Fi companion if the phone app will be the primary UI anyway: Xiao_C3_companion_radio_wifi, RAK_3112_companion_radio_wifi, Xiao_S3_WIO_companion_radio_wifi, Station_G2_companion_radio_wifi.
• Pick a GPS-capable board if location-aware/mobile use matters: the T-Beam family, heltec_tracker_v2, Heltec_v3, heltec_v4, Station_G2, ThinkNode_M5.
• If you want the most conservative, older radio family choices, the SX1276 boards are LilyGo_TLora_V2_1_1_6, Tbeam_SX1276, and Heltec_v2.

Additional Signals

If you are deciding between otherwise similar boards, these target-level settings often matter more than flash alone.

• CPU cfg is the runtime clock MeshCore sets for that target. default means MeshCore does not override the board's default clock.
• TX cfg is MeshCore's configured LORA_TX_POWER, not guaranteed antenna output. Boards with a PA or RF front-end may radiate much more than the configured value suggests.
• Power is how the target exposes power in the repo: ADC batt, PMU, custom 2S, fixed/ext, or none.
• Extras lists notable RF or peripheral extras exposed by the target, such as PA/FEM, RF switch, BME280, NeoPixel, or ext ant.

Target	CPU cfg	TX cfg	Power	Extras
Ebyte_EoRa-S3	default	22 dBm cfg	ADC batt
Generic_E22_sx1262	default	22 dBm cfg	ADC batt	RF switch
Generic_E22_sx1268	default	22 dBm cfg	ADC batt	RF switch
Heltec_ct62	80 MHz	22 dBm cfg	ADC batt
Heltec_E213	default	22 dBm cfg	ADC batt
Heltec_E290	default	22 dBm cfg	ADC batt
Heltec_T190	default	22 dBm cfg	ADC batt
heltec_tracker_v2	160 MHz	9 dBm cfg*	ADC batt	PA/FEM
Heltec_v2	default	20 dBm cfg	ADC batt
Heltec_v3	80 MHz	22 dBm cfg	ADC batt
heltec_v4	80 MHz	10 dBm cfg*	ADC batt	PA/FEM
heltec_v4_tft	80 MHz	10 dBm cfg*	ADC batt	PA/FEM
Heltec_Wireless_Paper	default	22 dBm cfg	ADC batt
Heltec_Wireless_Tracker	80 MHz	22 dBm cfg	none
Heltec_WSL3	80 MHz	22 dBm cfg	ADC batt
LilyGo_T3S3_sx1262	default	22 dBm cfg	ADC batt
LilyGo_T3S3_sx1276	default	20 dBm cfg	ADC batt	RF switch
LilyGo_TBeam_1W	default	22 dBm cfg*	custom 2S	PA/FEM
LilyGo_TDeck	default	22 dBm cfg	ADC batt
LilyGo_Tlora_C6	default	22 dBm cfg	none	RF switch
LilyGo_TLora_V2_1_1_6	default	20 dBm cfg	ADC batt
M5Stack_Unit_C6L	default	22 dBm cfg	none	RF switch
Meshadventurer_sx1262	default	22 dBm cfg	ADC batt	RF switch
Meshadventurer_sx1268	default	22 dBm cfg	ADC batt	RF switch
Meshimi	default	22 dBm cfg	none	ext ant
nibble_screen_connect	default	22 dBm cfg	none	NeoPixel
RAK_3112	80 MHz	22 dBm cfg	ADC batt
Station_G2	default	7 dBm cfg*	fixed/ext	PA/FEM
Station_G2_logging	default	7 dBm cfg*	fixed/ext	PA/FEM
T_Beam_S3_Supreme_SX1262	default	22 dBm cfg	PMU	BME280
Tbeam_SX1262	default	22 dBm cfg	PMU
Tbeam_SX1276	default	20 dBm cfg	PMU
Tenstar_C3_sx1262	80 MHz	22 dBm cfg	ADC batt
Tenstar_C3_sx1268	80 MHz	22 dBm cfg	ADC batt
ThinkNode_M2	default	22 dBm cfg	ADC batt
ThinkNode_M5	default	22 dBm cfg	ADC batt
WHY2025_badge	default	22 dBm cfg	none
Xiao_C3	80 MHz	22 dBm cfg	ADC batt
Xiao_C6	default	22 dBm cfg	none	RF switch
Xiao_S3_WIO	default	22 dBm cfg	none	RF switch

* These targets use a PA or RF front-end, so effective output can be much higher than the configured LORA_TX_POWER.

repeater_mqtt Boards

This table includes all repeater MQTT targets currently defined in variants/eastmesh_mqtt/platformio.ini.

| Target | MCU | RAM | PSRAM | Flash | LoRa | Display | GPS | SD | | ------------------------ | ------- | ------ | ----- | ----- | ------ | --------------- | --- | -- | | Ebyte_EoRa-S3 | ESP32S3 | 512 KB | 2 MB | 4 MB | SX1262 | OLED (SSD1306) | | | | Generic_E22_sx1262 | ESP32 | 520 KB | No | 4 MB | SX1262 | None | | | | Generic_E22_sx1268 | ESP32 | 520 KB | No | 4 MB | SX1268 | None | | | | Heltec_ct62 | ESP32C3 | 400 KB | No | 4 MB | SX1262 | None | | | | Heltec_E213 | ESP32S3 | 512 KB | 8 MB | 16 MB | SX1262 | E-paper (2.13") | | | | Heltec_E290 | ESP32S3 | 512 KB | 8 MB | 16 MB | SX1262 | E-paper (2.9") | | | | Heltec_T190 | ESP32S3 | 512 KB | 8 MB | 16 MB | SX1262 | TFT (ST7789) | | | | heltec_tracker_v2 | ESP32S3 | 512 KB | No | 8 MB | SX1262 | TFT (ST7735) | ✅ | | | Heltec_v2 | ESP32 | 520 KB | No | 8 MB | SX1276 | OLED (SSD1306) | | | | Heltec_v3 | ESP32S3 | 512 KB | No | 8 MB | SX1262 | OLED (SSD1306) | ✅ | | | heltec_v4 | ESP32S3 | 512 KB | 2 MB | 16 MB | SX1262 | OLED (SSD1306) | ✅ | | | heltec_v4_tft | ESP32S3 | 512 KB | 2 MB | 16 MB | SX1262 | TFT (ST7789) | ✅ | | | Heltec_Wireless_Paper | ESP32S3 | 512 KB | No | 8 MB | SX1262 | E-paper (2.13") | | | | Heltec_Wireless_Tracker | ESP32S3 | 512 KB | No | 8 MB | SX1262 | TFT (ST7735) | ✅ | | | Heltec_WSL3 | ESP32S3 | 512 KB | No | 8 MB | SX1262 | None | ✅ | | | LilyGo_T3S3_sx1262 | ESP32S3 | 512 KB | 2 MB | 4 MB | SX1262 | OLED (SSD1306) | | 🧪 | | LilyGo_T3S3_sx1276 | ESP32S3 | 512 KB | 2 MB | 4 MB | SX1276 | OLED (SSD1306) | | 🧪 | | LilyGo_TBeam_1W | ESP32S3 | 512 KB | 8 MB | 16 MB | SX1262 | OLED (SH1106) | ✅ | ✅ | | LilyGo_TDeck | ESP32S3 | 512 KB | No | 16 MB | SX1262 | TFT (ST7789) | ✅ | 🧪 | | LilyGo_Tlora_C6 | ESP32C6 | 512 KB | No | 4 MB | SX1262 | None | | | | LilyGo_TLora_V2_1_1_6 | ESP32 | 520 KB | No | 4 MB | SX1276 | OLED (SSD1306) | ✅ | | | M5Stack_Unit_C6L | ESP32C6 | 512 KB | No | 4 MB | SX1262 | None | ✅ | | | Meshadventurer_sx1262 | ESP32 | 520 KB | No | 4 MB | SX1262 | OLED (SSD1306) | ✅ | | | Meshadventurer_sx1268 | ESP32 | 520 KB | No | 4 MB | SX1268 | OLED (SSD1306) | ✅ | | | Meshimi | ESP32C6 | 512 KB | No | 4 MB | SX1262 | None | | | | nibble_screen_connect | ESP32S3 | 512 KB | No | 4 MB | SX1262 | OLED (SSD1306) | | | | RAK_3112 | ESP32S3 | 512 KB | No | 8 MB | SX1262 | None | ✅ | | | Station_G2 | ESP32S3 | 512 KB | 8 MB | 16 MB | SX1262 | OLED (SH1106) | ✅ | | | Station_G2_logging | ESP32S3 | 512 KB | 8 MB | 16 MB | SX1262 | OLED (SH1106) | ✅ | | | T_Beam_S3_Supreme_SX1262 | ESP32S3 | 512 KB | 8 MB | 8 MB | SX1262 | OLED (SH1106) | ✅ | ✅ | | Tbeam_SX1262 | ESP32 | 520 KB | No | 4 MB | SX1262 | OLED (SSD1306) | ✅ | | | Tbeam_SX1276 | ESP32 | 520 KB | No | 4 MB | SX1276 | OLED (SSD1306) | ✅ | | | Tenstar_C3_sx1262 | ESP32C3 | 400 KB | No | 4 MB | SX1262 | None | | | | Tenstar_C3_sx1268 | ESP32C3 | 400 KB | No | 4 MB | SX1268 | None | | | | ThinkNode_M2 | ESP32S3 | 512 KB | No | 4 MB | SX1262 | OLED (SH1106) | | | | ThinkNode_M5 | ESP32S3 | 512 KB | No | 4 MB | SX1262 | E-paper (GxEPD) | ✅ | | | WHY2025_badge | ESP32C6 | 512 KB | No | 4 MB | SX1262 | None | | | | Xiao_C3 | ESP32C3 | 400 KB | No | 4 MB | SX1262 | None | ✅ | | | Xiao_C6 | ESP32C6 | 512 KB | No | 4 MB | SX1262 | None | | | | Xiao_S3_WIO | ESP32S3 | 512 KB | No | 8 MB | SX1262 | None | ✅ | |

Note: all current repeater_mqtt boards support the local web panel except Xiao_C3, where it is disabled to preserve limited board resources.

SD notes:

• ✅ means the board is currently known to work with the SD-backed archive path in EastMesh.
• 🧪 means the board hardware likely supports TF/microSD, but the EastMesh board-specific integration still needs validation before it should be treated as supported.
• For the current stats archive, a 4 GB FAT32 microSD card is more than sufficient. Larger cards are also supported.

companion_radio_wifi Boards With A Display

These are the Wi-Fi companion targets that have a display configured for local status, setup help, or occasional direct interaction.

Target	MCU	RAM	PSRAM	Flash	LoRa	Display	GPS
Heltec_v2	ESP32	520 KB	No	8 MB	SX1276	OLED (SSD1306)
Heltec_v3	ESP32S3	512 KB	No	8 MB	SX1262	OLED (SSD1306)	✅
heltec_tracker_v2	ESP32S3	512 KB	No	8MB	SX1262	TFT (ST7735)	✅
heltec_v4	ESP32S3	512 KB	2 MB	16MB	SX1262	OLED (SSD1306)	✅
heltec_v4_tft	ESP32S3	512 KB	2 MB	16MB	SX1262	TFT (ST7789)	✅
LilyGo_TBeam_1W	ESP32S3	512 KB	8 MB	16MB	SX1262	OLED (SH1106)	✅
LilyGo_TLora_V2_1_1_6	ESP32	520 KB	No	4 MB	SX1276	OLED (SSD1306)	✅
nibble_screen_connect	ESP32S3	512 KB	No	4MB	SX1262	OLED (SSD1306)
Station_G2	ESP32S3	512 KB	8 MB	16MB	SX1262	OLED (SH1106)	✅
T_Beam_S3_Supreme_SX1262	ESP32S3	512 KB	8 MB	8MB	SX1262	OLED (SH1106)	✅
ThinkNode_M2	ESP32S3	512 KB	No	4MB	SX1262	OLED (SH1106)
ThinkNode_M5	ESP32S3	512 KB	No	4MB	SX1262	E-paper (GxEPD)	✅

companion_radio_wifi Headless Boards

These are the Wi-Fi companion targets that rely on the companion app as the primary interface. For many users, this is the best everyday option.

Target	MCU	RAM	PSRAM	Flash	LoRa	GPS
Heltec_WSL3	ESP32S3	512 KB	No	8 MB	SX1262	✅
RAK_3112	ESP32S3	512 KB	No	8 MB	SX1262	✅
Xiao_C3	ESP32C3	400 KB	No	4 MB	SX1262	✅
Xiao_S3_WIO	ESP32S3	512 KB	No	8 MB	SX1262	✅

Practical Picks

• Best all-round MQTT repeater with screen and overall headroom: heltec_v4_repeater_mqtt, heltec_v4_tft_repeater_mqtt, Station_G2_repeater_mqtt, LilyGo_TBeam_1W_repeater_mqtt.
• Best MQTT repeater if you want a simple headless install: RAK_3112_repeater_mqtt, Tenstar_C3_sx1262_repeater_mqtt, Heltec_ct62_repeater_mqtt, Generic_E22_sx1262_repeater_mqtt.
• Best low-power display MQTT builds: Heltec_E213_repeater_mqtt, Heltec_E290_repeater_mqtt, Heltec_Wireless_Paper_repeater_mqtt, ThinkNode_M5_Repeater_mqtt.
• Best companion choices if you want the richest local UI: heltec_v4_tft_companion_radio_wifi and heltec_tracker_v2_companion_radio_wifi.
• Best companion choices if you want maximum memory headroom: T_Beam_S3_Supreme_SX1262_companion_radio_wifi, Station_G2_companion_radio_wifi, LilyGo_TBeam_1W_companion_radio_wifi.
• Best companion choices if you are happy with an app-first, mostly headless setup: Xiao_C3_companion_radio_wifi, RAK_3112_companion_radio_wifi, Xiao_S3_WIO_companion_radio_wifi, Station_G2_companion_radio_wifi.
• Best companion choices if you prefer OLED over TFT: T_Beam_S3_Supreme_SX1262_companion_radio_wifi, heltec_v4_companion_radio_wifi, LilyGo_TBeam_1W_companion_radio_wifi.