I’ve got my Lynxmotion CH3-R today. In this topic I want to show my build progress of this kit.
This is my first Robot build/project. So I have a lot to learn about this stuff. First I want to build this kit so it works correctly with the Lynxmotion PS2 controller. After that I have more and more ideas for what i can do to make this Robot Autonomous. After the build I want to play with the code and at sensors and other stuff to make it autonomous.
Here some Specs on my CH3-R. At the moment it is completely stock:
18 x HS-475HB (76 oz. in.) Standard Servo (S475HB)
Bot Board II (ABB-01)
BASIC Atom 28 (BA-02)
SSC-32 Servo Controller (SSC-32)
PS2 Robot Controller (RC-01)
Below the first pictures of my kit still in the box. I hope to start soon with the build of the Legs.
Congratulations with your CH3-R! I’m sure you’ll enjoy building and playing with it! I’ll keep following this topic and feel free ask if there are any question!
I’ve started opening some of the bags to get a view of the contents when I got to the Leg kits I thought I ran in to a problem. As you can see on the photo I got one CH3-R Leg and two BH3-R legs. When I viewed the contents it looks like it’s only the paper of the BH3-R, the contents are from the CH3-R. Now I can start the build of the six legs.
oops! Yes, we were aware of this little mistake. Like you said the content were correct, just the wrong paper was used. We thought we caught all of the ones affected. Sorry for the mistake.
Started with building the leg mechanics, got a left en right leg at the moment. The legs go together very easy. It comes with lots of extra screws and nuts. Also did some test fitting of the PCB’s on the frame, i want to fit the two PCB’s between the two plates. I haven’t figured this out yet how to get everything between the two plates and keep it accessible. Have some photo’s of other Hexapods so i have some examples.
To finish the build of the legs I have to double check the center position of the servo’s.
I’m still thinking about how to power the servo’s and PCB’s. I think it’s going to be one small 2000mAh to 3000mAh 2S Lipo or 6 cell NiMh, but still searching for a good regulator to convert the voltage to a usable voltage for the servo’s. I found on this forum that the stronger Hitec HS-645 servo’s use combined 7-8A when walking. I assume that the HS-475 servo use less current when walking because they are less powerful or is the consumption the same? Is one 10A regulator enough to connect to VS1 and VS2. Or are two 10A regulators better? then connecting one regulator to VS1 and the other to VS2. VL wil be connected to the full voltage of the battery.
I prefer Lipo at the moment because of the weight and the advantage of almost no Self-discharge.
I don’t think there is any current savings with 475 servos. The 645 servos and the 475 servos need to do the same amount of work, so the current draw will be roughly the same. However if more power is needed the 645s have more to give, and can draw even more current.
As for current ratings for regulators. It depends on how they are rated. You will need around 8 amps continuous capability. Using two regulators will dissipate less heat and probably increase run time a bit as each one does half the work. HTH
Yes, we were aware of this little mistake. Like you said the content were correct, just the wrong paper was used. We thought we caught all of the ones affected. Sorry for the mistake.