Though at this point it is still early to order your toy parts, you can decide to research on the various types available on the market, their quality, price, and where to get them. If possible, avoid shipping and order online from the few sites that sell them online. Materials needed for the toy include two servo motors, chassis, a receiver, and a transmitter.
You will need motors because that is what will enable your transformer prime toy to move and you need two in number; one will be used to power one wheel while the other one one will power the second wheel. It will enable you to use the simplest method to steer your toy. To go forward, both motors will have to move in that direction and to go backward; they will have to spin backward.
The difference between a servo motor and a DC motor is, a servo motor is geared and turned 180 degrees, and it is capable of transmitting data back to its position. You can modify the servo motor to enable it to be in continuous motion
The battery will be needed to enable you to power your toy. Avoid AC at all costs and stick to DC power from batteries. There are three main battery types you can choose from; Lithium Polymer (Lipo), Alkaline, and NiMH, NiCad.
The battery specifications are also an important factor to consider as you will have to pick a voltage of your battery pack. Most of the toys use 4.8V,and 6.0 V and the good news is that most servos will comfortably run on either.
Check out the capacity of your toy battery pack which has normally labeled me. The higher the mAh, the better, the most expensive and the heavier it becomes, but you have a choice to make.
The chassis is requiredto attach all the electronics onto it with plastic and aluminum materials coming in handy. If you are a beginner in building a toy, then it is advisable that you go for the plastic called HDPE as it is cheap and easy to work with. You can decide the thickness by getting the ¼ of it. You can decide the length of the sheet by going to a longer one just in case you mess up when doing the cutting; get at least double the size of your toy.
For the transmitter/receiver, it is considered as the most important and expensive of them all because, without it, your toy won’t be able to be considered as a transformer toy. Make sure that you get the best to start off to save maintenance cost of a cheap one which in the long run, will make it expensive. You can go for a 2.4 GHz transmitter and receiver as it has been rated one of the best in the market.
For the wheels, you will need to consider the traction, the diameter, and if they are going to attach to your motor easily. To get the actual diameter, you will have to measure the length of the wheel from one side, through the center point, to the opposite side.
If the diameter is greater, the transformer toy will go faster, and it will also climb faster, but it will have less torque.If the wheel turned out to be smaller and encircled with a foam or rubber ring around them to prevent sliding around. It will be easy to screw this type of wheels onto the servos, thus no worries. You will need a total of 2 wheels for your toy.