Meshnology N40 ESP32/ESP32-S3 expansion board

An expansion board that takes ESP32 and ESP32-S3 core boards and breaks every GPIO out to 2.54 mm headers and screw terminals. A level shifter and per-pin LEDs make wiring and debugging easier.

~~$12.99~~

15%$11.04

Price with code · Meshnology · as of 2026-10-09

Code NEWMESH15 · 15% off

first order

Copy code & shop Meshnology

~~$12.99~~15%$11.04Copy code & shop Meshnology

1Screw terminals that hold

Headers at 2.54 mm expose every GPIO, power and reset pin, and KF screw terminals keep wiring tight against vibration.

The board with colour-coded screw terminals

2Level shifter and per-pin LEDs

A TI TXS0108EPWR high-speed bidirectional level shifter (up to 60 Mbps) is on board, and an LED on each pin shows GPIO state at a glance.

37–12 V external power

A DC 5.5 × 2.1 jack takes 7–12 V (12 V / 2 A recommended). A 12 V / 2 A adapter is included, and it can also run from a USB cable.

Key specs

Size: 87.0 × 80.0 × 12.0 mm
Mounting holes: 80.2 × 73.2 mm (M3 screws)
Power input: DC 5.5×2.1, 7–12 V / 2 A
Level shifter: TI TXS0108EPWR
Operating temp.: -20 – 70 °C

Good pick if

You want tidy wiring for ESP32 prototypes
You want to screw sensors and relays down

Think twice if

You expect a core board included (it is separate)

FAQ

Is there a promo code?

Yes. Enter NEWMESH15 at Meshnology checkout when buying the Meshnology N40 ESP32/ESP32-S3 expansion board for 15% off. Conditions: first order.

Which core boards fit?

It is for ESP32 and ESP32-S3 core modules, and the images show DevKitC, NodeMCU and Freenove boards. Check the orientation: inserting a board backwards can burn it out.

What does the price include?

The $12.99 here covers one expansion board and a 12 V / 2 A power adapter. Two boards are $20.99, and core boards are optional.