04/25/2017 at 11:17 •
I have purchased the base components needed to build my tiny world explorer robot:
1 Raspberry Pi Zero WLAN
6 Stepper motors 28BYJ-48 + control boards
1 Micro servo
1 Rasperry Pi IR camera module
The total weight is:
The target weight for the robot must be below 500g to keep the shipping costs low. No more than 200g are left for:
LEDs + chassis + wheels + battery holder.
The robot will ship without batteries. 4 or 5 AA cells will be needed to power the electronics.
Next things to be done are:
-Wiring it up and see if it runs
-3D print chassis and wheels
-Adapt the software of my Curiosity Pi to make it run.
05/23/2017 at 15:08 •
I have connected a stepper motor, four LEDs and a USB camera to my Raspberry Pi Zero WLAN (the cable for the Pi camera module hasn't arrived yet).
Next thing was doing coding in html, Java script, Perl and C to get a basic user interface. The result is an IoT device that is not mobile yet:
You can have a look at the arrangement on my control page:
You can turn the stepper motor clockwise or counterclockwiese and turn the LEDs ON or OFF. The live view is transmitted by still images that are refreshed each 10s (more or less). Some feedback would be nice if it works with your Browser and your OS - thanks!
The arrangement is placed in my RoboSpatium, thus you can also inspect that basic IoT device with my Lander camera:
or my rover number 1:
06/08/2017 at 21:58 •
I have printed the base components of the first Earth Explorer prototype:
It took 36h to manufacture the parts needed to get a rolling chassis. Things like a battery box, mounts for the driver boards, the Raspberry Pi or the camera are still missing, however I will be able to get a driving rover during weekend. The "Internet of Useful Things" section of this years HackadayPrize comes to an end on Monday which is why I will work on my project the coming days to turn the static camera that transmits photos from my attic into a mobile image sensor which is more useful, I guess.
06/09/2017 at 20:43 •
The conceptual design was a 6 wheeler, but now my earth explorer comes with only 4 wheels having a radius of 10cm.Looks like the torque of the geared motors is sufficient to move the rover with low speed on flat ground. Tests will show what slope the rover can climb. Even if only a few parts are printed yet, there are changes in the design. The wheel hub has been changed to fit more tightly on the axis of the motor. For best results, minor changes on the body were made, too.
06/10/2017 at 16:59 •
I did a first test run with all components more or less loosely in the body of my Earth Explorer. The test terrain was my RoboSpatium (my attic) and my latest rover took a snapshot of my first rover ever (that is in service since June 01, 2011, driving more than 10km since that day):
Soft and hardware of my Earth Explorer are still in a very experimental state, but work goes on over the weekend...