Thingiverse
MR - 4 : Robotic Tank by timmiclark
by Thingiverse
Last crawled date: 3 years ago
My latest tankbot has been designed to be a larger vehicle but printable on a small scale printer.
https://youtu.be/KUup3ndVikM
A number of issues with the other tanks have been overcome (hopefully) with this one.
UPDATE 1: Have modified COG - Please use V4 to overcome track catch issue. The catch issue is far more evident when printed in PLA than ABS.
UPDATE 2: Added two new track variations. These allow for variations in materials, print settings and printer type. I find that my printer and ABS tends to work OK on the standard track, while my printer and PLA needs a combination of the 2.2 and 2.4 track types. The number refers to the centre diameter of the pin hole. The idea is to maintain enough tension in the track, while simultaneously allowing free movement
First and foremost it now runs on two standard sized continuous rotation servos. You can obtain these with various torque settings to suit your needs!
Secondly the tracks are specifically designed to be joined with 1.75mm filament offcuts. These save the need to order expensive stainless steel rods and because they flex, they hold themselves in without need for glue.
Thirdly I have designed it to bolt together rather than being glued - so that changing parts - or reconfiguring it is now possible.
Notes and hints:
The tank should fit a range of standard sized servos (they are not all that "standard") but you may need to play around with the square spindle to fit your servo nicely into the cog.
I like to over power my robots in terms of battery (the one in the video has 12V), and then use a step down power converted to power the servos - this means that you get longer drive time, more power and less chance of your controller (Arduino in my case) resetting because the servos stole all of the juice.
I have designed a number of different body configurations. Feel free to play around with what ever suits your needs.
I have so far only designed an external Arduino Uno mount, but you could run it on any controller that suits.
I designed this specifically for my Up! Plus, but it developed a fault halfway through the design phase and I finished it on a ProJet full colour powder printer that I have access to. You can still print it in and FDM printer greater than 100mm x 100mm
The body section with the build in sensor is designed for a HC-SR04 untrasonic sensor and the Adafruit RGB Color Sensor.
*The body section with the provision for the 12V battery clip (which takes 8 x AA batteries) also has provision for a 16mm round press switch.
You will need 26 tracks per side - note print the tracks without supports, otherwise the pin holes clog up and you need to drill them out. A 2mm drill bit does this nicely ;)
You can access the source files from here:https://drive.google.com/open?id=0B0oR8i_t-zjyVnRWb1hxeUlPRlE
https://youtu.be/KUup3ndVikM
A number of issues with the other tanks have been overcome (hopefully) with this one.
UPDATE 1: Have modified COG - Please use V4 to overcome track catch issue. The catch issue is far more evident when printed in PLA than ABS.
UPDATE 2: Added two new track variations. These allow for variations in materials, print settings and printer type. I find that my printer and ABS tends to work OK on the standard track, while my printer and PLA needs a combination of the 2.2 and 2.4 track types. The number refers to the centre diameter of the pin hole. The idea is to maintain enough tension in the track, while simultaneously allowing free movement
First and foremost it now runs on two standard sized continuous rotation servos. You can obtain these with various torque settings to suit your needs!
Secondly the tracks are specifically designed to be joined with 1.75mm filament offcuts. These save the need to order expensive stainless steel rods and because they flex, they hold themselves in without need for glue.
Thirdly I have designed it to bolt together rather than being glued - so that changing parts - or reconfiguring it is now possible.
Notes and hints:
The tank should fit a range of standard sized servos (they are not all that "standard") but you may need to play around with the square spindle to fit your servo nicely into the cog.
I like to over power my robots in terms of battery (the one in the video has 12V), and then use a step down power converted to power the servos - this means that you get longer drive time, more power and less chance of your controller (Arduino in my case) resetting because the servos stole all of the juice.
I have designed a number of different body configurations. Feel free to play around with what ever suits your needs.
I have so far only designed an external Arduino Uno mount, but you could run it on any controller that suits.
I designed this specifically for my Up! Plus, but it developed a fault halfway through the design phase and I finished it on a ProJet full colour powder printer that I have access to. You can still print it in and FDM printer greater than 100mm x 100mm
The body section with the build in sensor is designed for a HC-SR04 untrasonic sensor and the Adafruit RGB Color Sensor.
*The body section with the provision for the 12V battery clip (which takes 8 x AA batteries) also has provision for a 16mm round press switch.
You will need 26 tracks per side - note print the tracks without supports, otherwise the pin holes clog up and you need to drill them out. A 2mm drill bit does this nicely ;)
You can access the source files from here:https://drive.google.com/open?id=0B0oR8i_t-zjyVnRWb1hxeUlPRlE
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