---
title: Surprises with cheap Arduino versions
author: eNBeWe
type: post
date: 2015-01-10T21:00:16+00:00
url: /2015/01/10/surprises-with-cheap-arduino-versions/
categories:
  - Allgemein
  - Bastelkram

---
I just had a small surprise when I was assembling circuits for my master thesis project. When I was wondering why the Arduino wasn't working as expected I discovered the following "bug".

[![IMG_20150110_21533](/posts/images/IMG_20150110_215338-300x225.jpg)][1]

This missing soldering point is the ground for one PWM pin.

Its probably my own fault for buying cheap Arduino replacements from sainsmart instead of the original Arduino boards.

 [1]: /posts/images/IMG_20150110_215338.jpg