Estimated time: 15-20 mins
![](https://my.betaboxlearning.com/wp-content/uploads/sites/11/2021/02/Screen-Shot-2019-06-30-at-12.41.13-PM-1024x754.png)
Next, let’s build the upper chassis plate. Use four M2.5×8 copper standoffs and four M2.5 nuts for this part. Insert the standoffs to the upper plate as shown.
![](https://my.betaboxlearning.com/wp-content/uploads/sites/11/2021/02/Chassis2-1024x535.png)
![](https://my.betaboxlearning.com/wp-content/uploads/sites/11/2021/02/Chassis3-1024x979.png)
Make sure that the standoffs are on the correct side of the plate. Note the four small raised tabs on the right side of the diagram to know which side to screw in the standoffs.
Note: Be aware that some plates will not have these lifted tabs; if yours doesn’t, look for etched words that say things like Raspberry Pi or PCS9685 to determine which face is the chassis top and place the standoffs on the same side as the writing. If you have this version of the upper plate, you will be inserting twelve M2.5×8 copper standoffs and twelve M2.5 nuts into the chassis.
![](https://my.betaboxlearning.com/wp-content/uploads/sites/11/2021/02/Chassis4-1024x378.png)
Next, flip the plate around to install the battery holder.