This page (revision-55) was last changed on 2024-05-30 22:30 by Murray Altheim

This page was created on 2021-03-29 18:18 by Murray Altheim

Only authorized users are allowed to rename pages.

Only authorized users are allowed to delete pages.

Page revision history

Version Date Modified Size Author Changes ... Change note
55 2024-05-30 22:30 20 KB Murray Altheim to previous
54 2021-10-02 05:56 20 KB Murray Altheim to previous | to last
53 2021-10-02 05:54 20 KB Murray Altheim to previous | to last
52 2021-05-27 04:47 20 KB Murray Altheim to previous | to last
51 2021-05-16 07:55 20 KB Murray Altheim to previous | to last
50 2021-05-16 07:31 20 KB Murray Altheim to previous | to last
49 2021-05-16 06:23 20 KB Murray Altheim to previous | to last
48 2021-04-19 11:21 20 KB Murray Altheim to previous | to last
47 2021-04-10 12:46 20 KB Murray Altheim to previous | to last
46 2021-04-10 12:43 19 KB Murray Altheim to previous | to last
45 2021-04-10 12:37 19 KB Murray Altheim to previous | to last
44 2021-04-10 12:35 19 KB Murray Altheim to previous | to last
43 2021-04-10 12:31 18 KB Murray Altheim to previous | to last
42 2021-04-10 12:29 18 KB Murray Altheim to previous | to last
41 2021-04-10 12:26 18 KB Murray Altheim to previous | to last

Page References

Incoming links Outgoing links
Mars Rover
MarsRover

Version management

Difference between version and

At line 1 added 2 lines
[{Image src='https://raw.githubusercontent.com/jakkra/Mars-Rover/master/.github/driving.gif' link='https://github.com/jakkra/Mars-Rover/blob/master/.github/driving.gif' caption='Mars Rover by Jakob Krantz' width='300' align='right' class='imgFloatRight'}]
At line 44 removed one line
An easier read is:
At line 46 removed 7 lines
* [The Mars Robot Making Decisions on Its Own|https://www.theatlantic.com/technology/archive/2017/06/mars-curiosity-rover/531339/] \\ Thanks to artificial-intelligence software, the Curiosity rover can target rocks without human input. \\
[Marina Koren|https://www.theatlantic.com/author/marina-koren/], ''The Atlantic'', 24 June 2017
At line 57 changed 3 lines
%%information
One thing that __almost__ goes without saying: the vast majority of the hobbyist Mars Rovers I've found are, despite being very complicated and often expensive mechanisms, they are almost without fail toys, [remote-controlled vehicles|RemoteControlledVehicle], and only rarely qualify as __[Telerobotics]__. Very few have operational sensors, and so far (I'm trying to think...) none of them I've seen are __autonomous robots__, or even semi-autonomous. Put it this way, if you've built an autonomous Mars rover, contact me and I'll put a link or a description or a page up about it.
%%
So far I've been scanning the cool robot parts at [ServoCity|https://www.servocity.com/motion/] for ideas for the steering mechanism and rocker arms. The scale and weight of the overall robot help decide the size/power of the motors and servos. It's a bit of a balancing act. I also want to, unlike most of the "civilian" designs, somehow tuck my motors inside the wheels or otherwise not have them hanging down near the ground as many/most of the rovers I've seen seem to do.
At line 61 removed 2 lines
So far I've been scanning the cool robot parts at [ServoCity|https://www.servocity.com/motion/] for ideas for the [steering] mechanism and rocker arms. The scale and weight of the overall robot help decide the size/power of the motors and servos. It's a bit of a balancing act. I also want to, unlike most of the "civilian" designs, somehow tuck my motors inside the wheels or otherwise not have them hanging down near the ground as many/most of the rovers I've seen seem to do.
At line 99 removed one line
At line 102 changed 2 lines
I've analysed the various options but am not convinced of a suitable set of components, so I've ordered the parts for __1/6th of the drive system__: i.e., one motor, several wheel/tire options, a __ServoBlock__ (a steering servo with mounting brackets), a bearing assembly for a rocker arm, and an assortment of possible structural hardware to put it all together. The ''shipping charge'' for the order was US$120. Ouch. I'll probably blog about things when the parts come in and I've had some time to play.
[{Image src='attach/MarsRover/servoblock_on_servo.jpg' link='attach/MarsRover/servoblock_on_servo.jpg' caption='ServoBlock (click to enlarge)' width='200' align='left' class='imgFloatLeft'}]
I've analysed the various options but am not convinced of a suitable set of components, so I've ordered
the parts for __1/6th of the drive system__: i.e., one motor, several wheel/tire options, a steering servo with mount, a bearing assembly for a rocker arm, and an assortment of possible structural hardware to put it all together. The shipping charge fo rth order was US$120. Ouch. I'll probably blog about things when the parts come in and I've had some time to play.
At line 94 added one line
[{Image src='attach/MarsRover/osepp-tank-wheel.jpg' link='attach/MarsRover/osepp-tank-wheel.jpg' caption='A "Tank Wheel" (click to enlarge)' width='300' align='right' class='imgFloatRight'}]
At line 106 removed one line
At line 108 changed one line
At line 111 removed 2 lines
[{Image src='attach/MarsRover/osepp-tank-wheel.jpg' link='attach/MarsRover/osepp-tank-wheel.jpg' caption='A "Tank Wheel" (click to enlarge)' width='300' align='right' class='imgFloatRight'}]
At line 102 added 2 lines
* [Replica Mars Rover Curiosity outside the lab... exploring the real world...|https://youtu.be/rZESgtjL0B0] YouTube video of scale model of NASA Mars Rover using ServoCity Actobotics parts, Pololu motors, etc. Built by [Carlos Sicilia Til|https://www.youtube.com/channel/UCIgnjQmL78DlHMuank2THLg] who indicates his servos as: 4kg.cm wheel servo. Arm servos: 25kg.cm at shoulder, 4kg.cm at elbow and 1.5kg.cm at tool holder.
At line 153 changed one line
| 2 | 12V max CXT® Power Source w/ USB port (YL00000003) | $95.00 | $190.00 | | Toolshed Petone | [https://www.makitatools.com/products/details/YL00000003]
| 2 | 12V max CXT® Power Source w/ USB port (YL000000003) | $95.00 | $190.00 | | Toolshed Petone | [https://www.makitatools.com/products/details/YL00000003]
At line 165 removed 5 lines
* [Mars Exploration Rover|https://en.wikipedia.org/wiki/Mars_Exploration_Rover] on Wikipedia
* [Sojourner Project Home Page|https://mars.nasa.gov/MPF/rover/sojourner.html] (~1996, JPL)
** [A Description of the Rover Sojourner|https://mars.nasa.gov/MPF/rover/descrip.html]
** [Rover Telecommunications Photo Gallery|https://mars.nasa.gov/MPF/rovercom/pix.html]
** [Mars Pathfinder Microrover Publications|https://mars.nasa.gov/MPF/roverctrlnav/publications.html]
At line 173 removed one line
* [In-situ Exploration and Sample Return: \\ Autonomous Planetary Mobility|https://mars.nasa.gov/mer/mission/technology/autonomous-planetary-mobility/], NASA
At line 190 removed 3 lines
[{Image src='https://raw.githubusercontent.com/jakkra/Mars-Rover/master/.github/driving.gif' link='https://github.com/jakkra/Mars-Rover/blob/master/.github/driving.gif' caption='Mars Rover by Jakob Krantz' width='300' align='right' class='imgFloatRight'}]
* [Replica Mars Rover Curiosity outside the lab... exploring the real world...|https://youtu.be/rZESgtjL0B0] YouTube video of scale model of NASA Mars Rover using ServoCity Actobotics parts, Pololu motors, etc. Built by [Carlos Sicilia Til|https://www.youtube.com/channel/UCIgnjQmL78DlHMuank2THLg] who indicates his servos as: 4kg.cm wheel servo. Arm servos: 25kg.cm at shoulder, 4kg.cm at elbow and 1.5kg.cm at tool holder.
At line 198 changed one line
* [The Open Source Mars Rover, One Year Later|https://hackaday.com/2020/07/02/the-open-source-mars-rover-one-year-later/] by Jakob Krantz (on Hackaday), uses LoRa to communicate with the (human) controller, with [open source code|https://github.com/jakkra/Mars-Rover] on github; he uses a separate 12v-5v switching voltage regulator for each servo (!) and outlines the hardware in more detail on the github page
* [The Open Source Mars Rover, One Year Later|https://hackaday.com/2020/07/02/the-open-source-mars-rover-one-year-later/] on Hackaday, uses LoRa to communicate with the (human) controller, with [open source code|https://github.com/jakkra/Mars-Rover] on github; he uses a separate 12v-5v switching voltage regulator for each servo (!) and outlines the hardware in more detail on the github page
At line 200 removed one line
For not only a Mars Rover but other designs, a bit old (circa 2013) but interesting, see the [Actobot Blog|https://beatty-robotics.com/actobot/] from __[Beatty Robotics|https://beatty-robotics.com/]__. Their gallery alone is worth the visit.
This page (revision-55) was last changed on 2024-05-30 22:30 by Murray AltheimTop