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Step 2Take the shell off the Tumbler
For purposes of this instructable, I'll be calling the Thunder Tumbler Radio Controlled 360 Degree Rally Car the "Tumbler", the printed circuit board inside the Tumbler the "PCB" and any microcontroller board/stamp the "controller". So you know my shorthand.
First thing is to take the shell off the Tumbler so you can get access to the PCB. On the bottom there are two screws (see the pictures) that are outside the main body of the Tumbler. Remove those screws and the shell can come off. I would suggest you save all the screws you remove, even for things like the shell you are leaving off. You can maybe use them later for mounting other things to the Tumbler.
Once the shell can be removed, take it off gently, it still has some wires attached. Those are the antenna (not important) and two LEDs that light up when either wheel is powered. I've left those wires and LEDs attached to my Tumbler, but you might want to just cut them and desolder later on the PCB to get them out of the way. Another YMMV point.
Once the shell has been gently pulled off, you can see the crossbar piece that it was screwed to. Take that off as well. This gives you access to the PCB.
On the PCB, there is one screw that holds it in place. Gently take that out and lift the PCB out of it's pocket. Now you can get access to the soldered side of the PCB and do some desoldering of the IC.
At this point I took an xacto and cut the plastic bits that held on the LED wires on the shell. So now I have the LEDs and the antenna wires loose off the PCB, and can put the shell aside.
First thing is to take the shell off the Tumbler so you can get access to the PCB. On the bottom there are two screws (see the pictures) that are outside the main body of the Tumbler. Remove those screws and the shell can come off. I would suggest you save all the screws you remove, even for things like the shell you are leaving off. You can maybe use them later for mounting other things to the Tumbler.
Once the shell can be removed, take it off gently, it still has some wires attached. Those are the antenna (not important) and two LEDs that light up when either wheel is powered. I've left those wires and LEDs attached to my Tumbler, but you might want to just cut them and desolder later on the PCB to get them out of the way. Another YMMV point.
Once the shell has been gently pulled off, you can see the crossbar piece that it was screwed to. Take that off as well. This gives you access to the PCB.
On the PCB, there is one screw that holds it in place. Gently take that out and lift the PCB out of it's pocket. Now you can get access to the soldered side of the PCB and do some desoldering of the IC.
At this point I took an xacto and cut the plastic bits that held on the LED wires on the shell. So now I have the LEDs and the antenna wires loose off the PCB, and can put the shell aside.
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