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Originally Posted by kalkurap
... How is the build coming up? Are you going to post your progress here? I would like see it!!
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Hi,
in short: the electronics are in great shape, but I do experience unanticipated problems with my main transmission. As soon as there is weight on the main axle, friction in the transmission increases. I may have to replace 2 or more brass bushings by ball bearings.
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... gears that you use. What is your source for the gears and the motors? ...
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I am not sure if this forum permits us mentioning commercial websites. I have bought M0.2 pinions from several vendors; "Mikroantriebe" in Germany is one of the sources. Finding this size pinion is not very easy. Motors and gears can also be obtained from Didel in Switzerland.
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I don't know how I will be able to solder them on to the PCB. If I fail to come up with a way to solder them, I might glue them upside down, and try to connect the pins to the PCB traces with copper wire.
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That should work. You may try to imitate the commercail process where these chips "float" on liquid solder if I understand the process correctly. Just make sure you connect the ground pad to some heat sinking surface (doesn' have to be big, though).
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I also made some progress regarding my IR system. I have identified the IR receiver module and the LED that I need to use, and verified that they both work properly.
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Great. If you are using one of the standard demodulators, verify it is rated to work at voltages < 5 V.
Last year, I presented an earlier version of my IR gear in another forum (my user name over there is "fredhs"):
http://www.rcgroups.com/forums/showt...42#post5601742
and
http://www.rcgroups.com/forums/showt...24711&page=194
Warm regards,
Fred
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