Hello, greetings to all robot builders, I am eager to receive the board ez-b, to give life to my butler robot, robot weighing 2.5 to 3 kg, the wheel servos are 15kg of torque, modified for continuous rotation, arms and head as well these servos, body materials are cheap and easy to find, I have a lot of ideas for the project that I'd like to share. Ping 3 sensors and 1 sharp infrared, head with 2-axis motion, arms opening and closing hands, voice, etc. .. And all thanks to the fantastic product ez-b, which by its ease and flexibility, have encouraged me with this project, since my childhood I came in my mind. Here is a video with the current assembly.
By R2D2
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R2D2, Thanks for the input. I will get some 50 ohm.
I contacted a large manufacturer and asked for the sample department and my 50 ohm is on it's way. Free item, free shipping.
I received my free sample. It is almost 1/2 inch thick and totaly unusable. Does anyone have a source for some flexable comparatively thin 50 ohm coax? I have run the gambit to no avail. Any help would be greatly appreciated.
It sounds like you received RG213 which is also 50 ohm. You need to be sure to get RG58 which is what you're looking for.
R2D2, I now have two EZ-B's. Can I just put a Y in the antenna cable and feed both with one antenna?
R2D2, Wont he ruin the receive section on one board if the other is transmitting?! This will truly be a problem even if you had separate antennas spaced very close together as well. I may be wrong. Maybe there is special circuitry that detects excessive rf power and shunts it to ground to protect the circuitry. However if that happened you wouldnt receive the signal. Granted you are dealing with low RF power but hooking directly with same antenna without RF frequency isolation (which is not possible here) would be bad for the sensitive receiver section.
R2D2, I sure would love to have your take on this subject. If anyone knows for sure a solution please chime in.
I would not share the antenna, not at all.
Be careful how large of a wire you use. Or at least how long, because you can damage the transmitter. Seems like your current setup "works", but I'd just be careful