Currently i have been wanting to make iver a delivery robot or a luner rover. So iv keep that thought in the back of my head and instead am focusing on a cheap robotics platform.
My main idea is a rocker boogie design. Made from pvc pipe and 3d printed parts. I will need 3 motors per side. I have ordered a 150rpm motor to do tests with. I decieded on that speed as it would give me with my wheel size a travelling distance of 1km in 14minutes. So 4km a hour. Obviously this may change to a slower rpm motor. Depending on my tests. As stated below: Under load 0.8kg per motor 500ma. Stall 1.3a.
I am wondering as too make things simple if i could parallel all 3 motors together. For tank style steering.
The h bridge design i am using isnt fantastic but i know it works. And it has cost me £5 in parts to make 2 drivers.excluding heatsinks which i already have. 5A NPN TIP120, 5A PNP TIP125, 2N2222A NPN
This may also be a good thing to comment on, the use of extremely inefficient obsolete BJTs.
My main idea is a rocker boogie design. Made from pvc pipe and 3d printed parts. I will need 3 motors per side. I have ordered a 150rpm motor to do tests with. I decieded on that speed as it would give me with my wheel size a travelling distance of 1km in 14minutes. So 4km a hour. Obviously this may change to a slower rpm motor. Depending on my tests. As stated below: Under load 0.8kg per motor 500ma. Stall 1.3a.
I am wondering as too make things simple if i could parallel all 3 motors together. For tank style steering.
The h bridge design i am using isnt fantastic but i know it works. And it has cost me £5 in parts to make 2 drivers.excluding heatsinks which i already have. 5A NPN TIP120, 5A PNP TIP125, 2N2222A NPN
This may also be a good thing to comment on, the use of extremely inefficient obsolete BJTs.