this is my new "robot" fully designed by me , its name on-board comes from the way it was designed , its quite literally all on the single printed circuit board ! :)
it was fully designed by me , from the circuits , printing the boards , control mech every thing ! plans are available if anyone needs them .
here are some pics , enjoy !
navigate around on its own using infrared and digital logic
Actuators / output devices: 2 * 1:120 ratio Tamiya gears
Looks like you use 2 NE567 for IR and 2 NE555 as timer, motor forward/backward by relays. You writing you using two motors, but why you using 4 relays to switch them?
Under digital logic I would understand that you use digital logic gates like AND/OR/NOR. Maybe the transistors in the rear of you robot are connected to logic gates?
delay the middle circuit is a delay circuit , once the IR detects an obstacle it delays the signal for an extra two seconds to allow it to steer off video soon of course
**exactly ** sure , i use the ICs you mentioned , the IR drives a relay at detection , the relay drives the timer delay circuit , the delay circuit fires another set of relays in order to determine the direction for rotation of the motors , every 4 transistors you see at the back form an H-bridge that receives the signals from the time delay . when everything is normally closed it drives straight and changes direction accordingly
Why a relay drives the timer delay circuit? Why a relay drives the timer delay circuit? A simple transistor would do this job as well. Save weight, relay driver transistors plus diode…Same question why relays drive the h-bridges.
true for the timer , i can , but then i need to do another circuit since i have two outputs from the relay SPDT . and for the sensors ; well i was not sure that the delay circuit will function , so in case i can directly join the h-bridge with the IR i can
It looks like the motors you It looks like the motors you are using are ungeared. This usually results in a robot with not enough power to move around. Ungeared motors spin fast with low torque.
thanks , i know that im an electronics engineer , the motors now are just for testing they will be replaced with 2 of tamiya universal gearboxes :)! thanks for the note anyhow , i think i should mention this in the text above
true Im an electronics engineer buddy , i know , but that’s how i designed the circuit i could have done it in a million ways , i could have even used optocouplers ! but i chose relays for many different reasons mostly emotional ! , thanks for your concern
Great job! I really like the Great job! I really like the compactness and neatness of it! I especially love BEAM robots. Good job. I look forward to seeing it in operation!
I was gonna ask how those I was gonna ask how those were treating you Now I know! I’d love to see a video of this bad-boy - he looks really nice and clean.