mBot – Building Tips & Tricks

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mBot – Building Tips & Tricks

mBot is a robot set powered by an Arduino, but, different from most Arduino sets this one comes with dedicated software based on Scratch like blocks. It is a really lovely set (see my video review here) but, putting it together can be a bit tricky. So this post has some tips to make it easier.

Contents

Everything you need including screws and a screw driver are included in the box, except for batteries. The set looks nice when you open the box (especially when you have the pink set like I do!) but it does look ‘technical’, because of the Arduino. There are sets, like the Cubetto for example, in which the electronics are hidden making them more beginner friendly.

Contents of the mBot box. Screwdriver is included.

Building the set

Building the mBot is not very hard if you have done these type of things before, but the instructions are hard to read. If you are building the set, follow this section for some extra tips, tricks & pics.

One big downside is that the items in the box do not have labels on their little plastic sacks or paper boxes, explaining what they are, which makes building the set a bit harder then necessary. For example, some of the screws look quite a bit similar on the instructions and would benefit from being labeled with numbers or letters on their packs.

If you are building along, the screw on the left is the M4 screw, the one on the right is the M2.2

Similarly, the motors are labeled motor (left) and motor (right) in the instruction booklet, while they are identical, which will confuse novice robot builders.

A second reason the instructions are hard to read is that they are a bit terse. For example, on this page in picture 8, suddenly the wires are in the sensors, we even get a tip about it, but there was never an instruction to connect them and how.

In between picture 7 and 8, you want to connect the two wires. There are only 2 apart from the usb cable, they look like old telephone cables to the ‘eyes’ and the little wheel unit. Pull the one connected to the wheel through the hole as the tip indicates.

Or here, the wire coming from the battery pack is not pictured to it is hard to know which way it goes.

Wire goes on the left, as shown on the actual pack 🙂

Here is how it should look like on the robot:

 

On the same page (picture 18) there is an inset trying to be helpful, but that is in reverse, for me only adding to the confusion so I am not adding it here 🙂

Finally, some knowledge or a least dexterity with electronics is assumed. For example, you have to connect the bluetooth module to the Arduino base yourself, which can be tricky if you have never done it before.

The best way to connect the bluetooth module is to firstly put the seven little legs in the slots, as lightly as possible so it does not go askew. Then simply push the module down with one finger (see this video)

 

 

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