Data Sheet

VMA107
V. 01 – 25/04/2018 3 ©Velleman nv
5. Overview
VMA107
The NodeMcu is an open-source firmware and development kit that helps you to prototype your IOT product
within a few Lua script lines.
operating voltage ................................................................................................... 5 VDC (USB)
dimensions .................................................................................................... 5.8 x 3.2 x 1.2 cm
weight .............................................................................................................................. 12 g
6. Warning
The ESP8266 module requires a power supply of 3.3 V. However, as the VMA107 contains a 3.3 V regulator, it
can be connected by using the 5 V micro USB or the 5 V VIN pin of the board.
The I/O pins of the VMA107 communicate with 3.3 V only. They do not tolerate 5 V. If interfacing with 5 V I/O
pins is needed, we recommend using our VMA410 level shifter.
7. Pin Layout