Reddit reviews Tamiya 70168 Double Gearbox

Someone asked me for a parts list via PM. I am a lazy man, so this is a 100% Amazon Prime build:

https://www.amazon.com/gp/product/B00CJGIWIA/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00T0BH8WS/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B001Q13BIU/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00H95C0A2/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B007OYAVLI/ref=oh_aui_detailpage_o05_s01?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B007OYAVLI/ref=oh_aui_detailpage_o05_s01?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B004FHO5Y6/ref=oh_aui_detailpage_o05_s01?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00T2U7R7I/ref=oh_aui_detailpage_o05_s01?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00DYQYLQQ/ref=oh_aui_detailpage_o05_s01?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00TIY5JM8/ref=oh_aui_detailpage_o05_s02?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00ZHF3RHQ/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B018JWCX8M/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

I actually didn't know what I wanted to build first, I'm a software engineer so I was exited to actually write some software and see an object moving hahaha, so eventually a Car came to mind, since it's fun to see it go and move around.

So, to start I looked in amazon for a chassis and wheels and I found this kit that looked pretty simple and functional, so I got that, and then since it only brings 1 motor, I got this to be able to move to the sides, at this point I had no idea how to make that work, but I just figured stuff up on the go, I didn't know how to move the motor so I searched for youtube videos and found out that I needed a motor controller again, amazon was my best friend haha, I also got this battery.

After that I was able to make the Car run, the problem was, I needed some kind of way to guide it, because randomly moving around wasn't that fun, so I came out with the design of the robot looking around I found this module and it was just what I needed, I had a few servos and other components from a mix kit that I got with the Arduino, and I used that (and my girlfriend's help with deciding where to put the pices to make them look nicer) to build the robot that you saw on my first post and then I used this BT module to build the manual mode that you can see in my second post and you know the rest of the story, I'm not sure if I missed something, but let me know and I can answer any question :)

Looks like this guy with the double gearbox upgrade.

It's been such a journey w/ this guy, I've swapped so much out, but I should be able to put together some kind of a list.

Treads

Motors

Bottom plate

DAGU MINI Driver

2 channel 5V relay

5v/9v/12v Battery Pack

LED Flashlight NOTE: Not this one, I just bought 2 cheap ones from my local Radio Shack. Also, RIP Radio Shack. As seen in the video, they had multiple LEDs. Be sure to get those type, some only have 1 LED. Just disassemble and wire power directly to the LED arrays.

Laser pointer

Obviously a Raspberry Pi. The one I'm using is a B+, shouldn't matter much though. Also, a camera module

Pololu Expansion Plate What most everything sits on top of

5v voltage regulator Steps down 9v output to 5v, goes to the relay to power the lights and laser. NOTE: This gets HOT when in use. I also bought a heatsink and I suggest you do as well

Edimax wifi adapter The only one I trust. I've got 2 or 3 of these and they never let me down.

SG90 micro servos x2

Pan/Tilt mount for servos NOTE: I couldn't find the one I use as it came in a kit LONG ago, but something like this should do the trick

Lots of wire and solder. I highly recommend the heat shrink tubes also. A note on how power is distributed. The battery pack has a USB 5v out, a 9v out and a 12v in/out. I only use the 12v in for charging. The 5v USB powers the pi exclusively. The 9v out is where a lot of the wiring gets crazy. The ground needs to branch off to the DAGU mini driver, the 5v regulator (IIRC), lights and laser. Power goes to the DAGU mini driver and to the 5v regulator. Wiring then continues from the 5v regulator to the 5v relay, through that to the lights and servos. Doing something like all this took a lot of wire soldering, so get gud. :)

That SHOULD be a complete parts list. This robot has gone through several parts changeouts in its lifetime, including a speaker and microphone, tires and ultrasonic sensor. Ultimately though, I like this configuration best. It seems powerful and stable. My only current problem is some jitter in the servos. I need to line out what's causing that, but shouldn't be too tough to figure out.

If you have any other questions, feel free to ask.

The chassis :https://www.amazon.com/Tamiya-70108-000-Tracked-Vehicle-Chassis/dp/B002DR3H5S/ref=sr_1_1?ie=UTF8&qid=1505124972&sr=8-1&keywords=tamiya+tracked+vehicle+chassis+kit
The Double motor gearbox:https://www.amazon.com/Tamiya-70168-Independent-Double-Gearbox/dp/B001Q13BIU/ref=sr_1_2?ie=UTF8&qid=1505124972&sr=8-2&keywords=tamiya+tracked+vehicle+chassis+kit

Only from Amazon?

• Get this ultrasonic sensor
  
  
• This gear box: http://www.amazon.com/Tamiya-Double-Gearbox-Independ-4-Speed/dp/B001Q13BIU/
  
  Then build a obstacle avoiding robot. DIY the chassis.