Hey all. I was really excited when my EZ-B arrived about a week ago. While it was on its way I was searching around for my first project. Thanks to DJ's great website and Ebay I found what I wanted. I picked up a RAD 2.0 for 15 bucks. It did not have any remote or battery charger (so what). And today I started on it! I hope to post my progress here and open to any ideas you all might have. As you can see I wasted no time before I opened it up!
The RAD 2.0 has what looks like a decent track base with motors and gear boxes (a bit loud when I tried out the motors). It has a physical gearbox selector switch for High and Low gearing (I will need to put a servo on that) which will be cool to mess with. The interesting thing about this guy is that he bends at the waist. He also has two arms that work together to grasp an object. It looks like can bend all the way over and pick up an object on the floor (we shall see). After opening it up I noticed it appears to be a decent thing to start modding.
I have an H bridge on the way for the track motors and I probably going to need another if I want to use the existing motors that control the waist and arm movements. I am thinking of putting in a accelerometer as well so when the bot goes up or down hills it could stabilize itself automatically! It will surely have a distance sensor...just not sure where to put it yet, camera, and probably go with an MP3 trigger. You may notice the circle on his chest...The original toy was remote control and could fire nerflike darts (pretty neat). Not sure I will keep that functionality as I am thinking of other cool gadgets to hook up to him. Tonight I tackled the head movement.....I will post more on that later.....
Kevin
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Oh wow that is incredible robotmaker , one of those sensors may be a good upgrade one day. Maybe in the spot of.my.pir.
its a very tiny sensor ,board is bigger
Definately a nice solution for my big bot with on-board computing. It will require multiple boards for operation so that would give me the additional inputs needed. Nice.
@ Bret,
Here is the link to the schematic on e-bay. Used two servo wires (two female connectors)... switched the Vcc and Signal lines.....then hooked straight up to D/IO. I see these are down to $3.78 (just ordered 4 more)...they seem to work great so far on Legion....!
Sensors
@kkeast thats same one i bought to play around and test,bought a few to test and compare,but notthing beats the TPA81,can detect between a small person or bigger person or flame or any other sensor,then build a thermal photograph image of the heat source
Thanks @kkeast - Yeah, I bought 5 of them. In looking at them I see that I can hook them up to ADC port then use their input in a script to affect what I want, as I plan on only using these sensors in Sentry Mode (which will be script driven). I believe this is what I will do then I can differentiate Left and Right sides and save my Digital ports.
@robotmaker - it would be nice to have those other sensors, I just can't afford them at this time. And on this robot I really don't need that level sophistication.
mostly low cost robots like this doesnt need a really good sensors,they kinda like a toy robot but fun to build when i use my sensors in these types ,i try to hide them or use very tiny sensor ,like the AMN22111 FOR LITTLE MORE MONEY sensors like SHARP IR i try to put behind a clear acrylic like on the BROOKSTONE ROVER project on TPA81 SENSOR using on my omnibot 2000 project ,computer and LEAF AI software also design a special male/female sound detecting circuit,and my spectrometer that can detect BEER from WATER and other drinks or ? ,for my omnibot 2000 project
@bret.tallent ADC PORT is analog to digital port 0-5 volts to use that sensor there is 2 ways ,one is simple use the digital port DOI ,from the 3pin connector on edge of the pcb
SECOND is to use the analog pin from the PIR sensor on the pcb,its easy to find ,there is 3 pins ,gnd,5 volt ,analog output,gnd iis easy to find ,5 volt easy to trace and find ,3 pin is your output
if using the 3 pins on pcb to analog port ,it might jump around or re-trigger from noise so a good way is to use a schmitt trigger IC or diode in series and pull up or down resistor
i got a RAD 4.0 robot looks good to hack for EZB