ThinkNode M2

Use an OLED-equipped Meshtastic node with a phone.

MeshtasticOLEDLoRaBluetooth

Availability: Listed
Design: Open firmware
Radio: Semtech SX1262

Where to buy · 2 shops

Compare with similar devices

Radio equipment needs certification where you live (FCC, CE, UKCA, ISED, Anatel). Some devices are uncertified or restricted in Brazil. Buyers are responsible for their local law.

Bring along: A phone and the correct regional radio variant.
Keep in mind: Check whether the selected package includes a battery.

Source checked · Sep 16, 2026

ThinkNode M2 — Image credit
Maker product image · Elecrow

(02) Blueprint

What’s published

Open firmware

Elecrow's own repo/PDFs give a GPIO pinout table, block diagram, and enclosure 3D model, but no schematic, PCB source, or BOM; firmware is the open Meshtastic project, not Elecrow's own.

Enclosure 3D model (STEP), from Elecrow's own GitHub repo

Read straight from the maker’s repository. Open on GitHub

Enclosure 3D model (STEP), from Elecrow's own GitHub repo

GitHub

Design files 3

Source 2

git clone https://github.com/Elecrow-RD/ThinkNode-M2-Meshtastic-LoRa-Signal-Transceiver-Powered-By-ESP32-S3-with-1.3-OLED-Display.git

Key parts 2

ESP32-S3-WROOM-1-N4R8 All ESP32-S3 devicesMCUDatasheet
SX1262 All SX1262 devicesLoRa radioDatasheet

Research notes

Verified all Elecrow PDFs (200) and pulled text with pdftotext: the 'datasheet' PDF has a block diagram plus a real GPIO/SX1262 pin table (sec. 5.3-5.4), not a schematic. The maker's own GitHub repo (Elecrow-RD, confirmed via gh api) contains only a 3D STEP enclosure model, duplicate PDFs, and Home-Assistant YAML examples — no schematic/PCB/Gerbers/BOM. meshtastic/firmware's variant.h/pins_arduino.h (confirmed via gh api tree) are pinout headers for the community Meshtastic build, not hardware files, per task guidance, so it is listed as firmware only and not counted toward hardware openness.

Every link checked 2026-09-27.

Hand this device to your agent. Everything on this page, as clean Markdown and JSON: specs, shops, prices, design files, parts.

Markdown JSON

Made the ThinkNode M2? Put the badge on your README; it links here, with every shop that sells it.

Specifications

Hardware and radio

Processor: ESP32-S3-WROOM-1-N4R8; dual-core LX7 up to 240 MHz
Memory: 512 KB SRAM, 8 MB PSRAM, 4 MB flash and 384 KB ROM
Display: 1.3-inch blue OLED; 128 × 64, SH1106, I²C
LoRa: SX1262; US915 / EU868 variants
Wireless: 2.4 GHz Wi-Fi and Bluetooth LE 5
Antenna and battery ports: Internal IPEX1 antenna socket and BAT connector
GNSS firmware configuration: Upstream ThinkNode M2 variant sets HAS_GPS to 0

Power and body

Battery: Nominal 3.7 V / 1000 mAh rechargeable cell in the documented model
Power input: USB-C 5 V / 1 A; lithium input 3.3–4.2 V
Documented current conditions: At 4.2 V: 136 mA screen off without battery; 217 mA transmitting; 260 mA with all functions/battery
Manual size and weight: 88.4 × 46 × 23 mm; 50 g with case and antenna
Datasheet size and weight: 88.5 × 46.3 × 23.8 mm with antenna/case; 45.3 g cased; ABS+PC
Bare assembly dimensions: Store lists 51.5 × 37 × 9.5 mm without case
Store environment: Operating −10 to 50 °C; storage −20 to 60 °C; 10–95% RH non-condensing
Datasheet environment: Operating −40 to 65 °C; storage −40 to 105 °C

Setup and programming

Factory firmware: Meshtastic preinstalled; configure through the Meshtastic app
Upstream build target: thinknode_m2 at the pinned Meshtastic commit
Programming connection: USB-C handles programming/debugging and charging
Download mode: BOOT is GPIO0; use BOOT with RESET to enter programming mode
Controls: Power, function, reset and BOOT buttons; buzzer and status LED
Status LED: Manual identifies steady power indication, rapid charging blink and slow low-battery blink
Expansion reference: Datasheet maps exposed GPIO and supply pads; accessory compatibility requires separate confirmation
Package: Device, USB-A–USB-C cable and manual

What still needs checking

The SH1106 driver is supported by the datasheet, wiki and upstream configuration; the store’s “SSH1106” spelling is inconsistent.
Do not interpret location sharing in app copy as an onboard GNSS receiver. The reviewed upstream target disables GPS; no built-in receiver was documented.
Store/manual and datasheet disagree on dimensions, mass, enclosure material and environmental limits. Battery/antenna measurement scope also differs; confirm the shipped revision.
The store’s 217 mA “maximum” conflicts with the datasheet’s 260 mA all-functions condition. These are maker figures, not measured runtime.
The maker Wi-Fi table includes 802.11a while specifying 2.4 GHz; no 5 GHz capability is claimed here.
Battery connector pitch/polarity and replacement-cell part number remain unverified. This profile describes the battery-equipped model; confirm the chosen package.
Power-button behavior differs across manual/datasheet; match instructions to installed firmware. MeshCore support was not verified.

Downloads & docs

Maker specifications and product detailselecrow.com ThinkNode M2 for Meshtastic User Manualelecrow.com ThinkNode M2 LoRa Meshtastic Communication Device DataSheetelecrow.com FCC Reportelecrow.com Elecrow M2 wiki (legacy URL names nRF52840; page describes ESP32-S3)static-cdn.elecrow.com Pinned Meshtastic M2 build definitiongithub.com Pinned M2 display and GNSS configurationgithub.com Meshtastic firmware selector and web flasherflasher.meshtastic.org Official Meshtastic apps and firmware downloadsmeshtastic.org

Source & revision notes

Maker listing checked Sep 15, 2026. Detailed documentation reviewed Sep 16, 2026. Not hands-on tested.

Price is a dated listing; confirm with the maker.

This source describes the battery-equipped M2; the maker also sells a separate version without a battery.

Meshtastic support is documented. MeshCore compatibility and the archive’s one-day runtime were not established in this review.

The reviewed upstream firmware target disables GPS; phone-app location sharing does not establish an onboard GNSS receiver.

Revision, setup and accessory documentation reviewed 16 September 2026; price and stock were not refreshed.

Price read from Elecrow on 2026-09-18; the product metadata and structured data agree.

Capability corrected 2026-09-19: this entry's specifications name Bluetooth, but the Bluetooth capability was not set, so the filter and the comparison table under-reported it.

Primary-source review; no physical testing. Firmware source targets are pinned, not a claim about the firmware installed on a shipped unit.

Build or list hardware with us