ThinkNode M1

Carry a Meshtastic node with an e-paper status display.

MeshtasticE-paperGPSBluetooth LE

Availability: Listed
Design: Open firmware
Radio: SX1262 LoRa

Where to buy · 3 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 for messaging and the correct regional band.
Keep in mind: MeshCore support and quoted runtime were not verified.

Source checked · Sep 16, 2026

ThinkNode M1 — Image credit
Maker product image · Elecrow

(02) Blueprint

What’s published

Open firmware

Elecrow publishes a datasheet, manual, and STEP 3D model for ThinkNode M1, but no schematic or PCB source; firmware support comes from community Meshtastic.

Design files 2

Source 2

git clone https://github.com/Elecrow-RD/ThinkNode-M1-LoRa-Meshtastic-Transceiver-With-1.54-EPD-Screen-GPS-function-nRF52840.git

Key parts 3

Nordic nRF52840 All nRF52840 devicesMCU (Cortex-M4F) / BLE radioDatasheet
Semtech SX1262 All SX1262 devicesLoRa radio transceiverDatasheet
Solomon Systech SSD1681 All SSD1681 devicese-paper display driver (1.54in, 200x200)Datasheet

Research notes

Official Elecrow-RD GitHub repo (gh api tree, master) holds Datasheet/ (same two PDFs as elecrow.com), '3D file/thinknode-m1-20250221.stp' (raw URL HTTP 200), two Home Assistant YAML examples and product images. Its readme mentions example/ and factory_firmware/ folders that are not in the tree. No schematic, KiCad/Altium/Gerber, or BOM on the repo, product page, or elecrow.com downloads (manual, datasheet, CE/FCC/IC/UL reports only). The ELECROW-ThinkNode-M1 platformio.ini variant (verified at commit 6d41e27) lives in community meshtastic/firmware, listed as official:false and not used as the openness driver. SSD1681 link is a Crystalfontz controller page (Solomon Systech site not reachable); nRF52840 page verified via WebFetch (curl gets 403).

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 M1? Put the badge on your README; it links here, with every shop that sells it.

Specifications

Hardware and radio

Processor: Nordic nRF52840; Cortex-M4F at 64 MHz
Memory: 256 KB RAM; 1 MB internal flash plus 2 MB external QSPI flash
Display: Frontlit 1.54-inch monochrome e-paper; SSD1681, 200 × 200 pixels
LoRa: SX1262; 868/915 MHz variants; maker specifies +22 dBm
Phone connection: Bluetooth LE; Meshtastic preinstalled
Positioning: Quectel L76K; GPS, GLONASS, BeiDou and QZSS
Clock: RTC supports interrupt wake-up
LoRa antenna: RP-SMA connector

Power and enclosure

Battery: Rechargeable lithium, nominal 3.7 V / 1200 mAh
USB input: USB-C; 5 V / 1 A
Manual current figures: 85 mA CPU+LoRa; 5.6 µA low-power claim
Datasheet current figures: At 4.2 V: 5.825 µA sleep/GPS off; 54.06 mA messaging/GPS on; 300 mA with all functions enabled
Manual dimensions: 82 × 51.6 × 26.3 mm; 81 g cased
Datasheet dimensions: 118.5 × 52.1 × 25 mm including antenna; 82.5 g cased; ABS+PC
Manual environment: Operating −10 to 50 °C; storage −20 to 60 °C; 10–95% RH non-condensing
Datasheet environment: Operating −20 to 70 °C; storage −40 to 80 °C

Setup and firmware

Controls: Rotary power/frontlight, GPS switch, previous/next buttons, reset and buzzer
GPS use: Enable its physical switch and acquire a fix outdoors
First configuration: Pair through the Meshtastic app; set the LoRa region and matching channel configuration
Upstream build target: thinknode_m1; separate thinknode_m1-inkhud build also exists at the pinned commit
Firmware upload: Connect USB, double-press reset, then copy the ThinkNode M1 UF2 to ELECROWBOOT
Debug access: SWD clock/data, ground and 3.3 V connections documented

Included and source differences

Manual package: Device, LoRa antenna, USB-A–USB-C cable, belt clip, lanyard, four M2×2 screws and manual
Display refresh: Current manual specifies a 2-second full refresh
Bluetooth version: Current manual states Bluetooth 5.4
Runtime claims: Older wiki claims over 48 hours; maker estimate
Manual runtime range: 6–100 hours; maker estimate varies by operating conditions

What still needs checking

Manual Bluetooth 5.4 conflicts with datasheet/wiki Bluetooth 5.0. Refresh timing, current conditions and enclosure figures also differ; confirm the exact revision. Antenna inclusion explains only part of the size difference.
Button actions changed between the older datasheet and current manual. Follow the manual matching the installed firmware.
Runtime and current figures are maker claims. The 85 mA number is not a whole-device maximum under every documented condition.
Battery connector pitch/polarity and a replacement battery part number were not established. Confirm before replacing the internal cell.
Confirm the selected 868/915 MHz SKU and antenna. MeshCore support was not verified in this review.

Downloads & docs

Maker specifications and product detailselecrow.com User Manual of ThinkNode M1 for Meshtasticelecrow.com IC Report of ThinkNode M1elecrow.com UL Report of ThinkNode M1elecrow.com ThinkNode M1 LoRa Meshtastic Communication Device DataSheetelecrow.com Elecrow M1 wikistatic-cdn.elecrow.com Pinned Meshtastic M1 build definitionsgithub.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.

The maker documents Meshtastic firmware and asks buyers to confirm third-party firmware compatibility. MeshCore support from the archive has not been verified.

Maker runtime estimates vary by document and operating mode; no runtime was measured. Match the selected radio band and antenna to the intended region.

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.

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

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