
MAKEVMA402 
LM2577 DC-DC VOLTAGE STEP -UP (BOOST) MODULE 

  MAKEVMA402 
  This device can be used by children aged from 8 years and above, and persons with 
reduced physical, sensory or mental capabilities or lack of experience and knowledge if 
they have been given supervision or instruction concerning the use of the device in a 
safe way and understand the hazards involved. Children shall not play with the device. 
Cleaning and user maintenance shall not be made by children without supervision. 
  Indoor use only. 
Keep away from rain, moisture, splashing and dripping liquids. 
  Familiarise yourself with the functions of the device before actually using it.  
  All modifications of the device are forbidden for safety reasons. Damage caused by user 
modifications to the device is not covered by the warranty. 
  Only use the device for its intended purpose. Using the device in an unauthorised way 
will void the warranty. 
  Damage caused by disregard of certain guidelines in this manual is not covered by the 
warranty and the dealer will not accept responsibility for any ensuing defects or 
problems. 
  The dealers cannot be held responsible for any damage (extraordinary, incidental or 
indirect) – of any nature (financial, physical…) arising from the possession, use or  
failure of this product. 
  Due to constant product improvements, the actual product appearance might differ from 
the shown images. 
  Product images are for illustrative purposes only.  
  Do not switch the device on immediately after it has been exposed to changes in 
temperature. Protect the device against damage by leaving it switched off until it has 
reached room temperature. 
  Keep this manual for future reference. 
USER MANUAL 
1.  Introduction 
To all residents of the European Union 
Important environmental information about this product 
This symbol on the device or the package indicates that disposal of the device after its lifecycle could 
harm the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it 
should be taken to a specialized company for recycling. This device should be returned to your 
distributor or to a local recycling service. Respect the local environmental rules. 
If in doubt, contact your local waste disposal authorities. 
Please read the manual thoroughly before bringing this device into service. If the device was damaged in 
transit, do not install or use it and contact your dealer. 
2.  Safety Instructions 
3.  General Guidelines 
4.  What is Arduino
Arduino® is an open-source prototyping platform based in easy-to-use hardware and software. Arduino® boards 
are able to read inputs – light-on sensor, a finger on a button or a Twitter message – and turn it into an output 
– activating of a motor, turning on an LED, publishing something online. You can tell your board what to do by 
sending a set of instructions to the microcontroller on the board. To do so, you use the Arduino programming 
language (based on Wiring) and the Arduino® software IDE (based on Processing). 
Surf to www.arduino.cc and www.arduino.org for more information. 
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®

  MAKEVMA402 
This module converts the microcontroller's power supply into a higher, adjustable voltage. 
This is DC-to-DC voltage adjustable module has an input of 3.5~35 V and an output of 5~56V. The output is 
adjusted via a multi-turn potentiometer. Please ensure that the output voltage higher than the input voltage, 
so as not to damage the module. 
  input voltage ............................................................................................... 3.5 to 35 VDC 
  output voltage .............................................................................. 5 to 55 VDC (adjustable) 
  max. input current ....................................................................................................... 3 A 
  continuous input current ............................................................................................... 2 A 
  chip .................................................................................................................... LM2577 
  dimensions ............................................................................................. 43 x 30 x 12 mm 
5.  Overview 
6.  Pin Layout 
© COPYRIGHT NOTICE 
All worldwide rights reserved. No part of this manual may be copied, reproduced, translated or reduced to 
any electronic medium or otherwise without the prior written consent of the copyright holder. 
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