Hydra

Autonomous tracked bot with antennae (micro-switches and plastic cable ties). The frame consists of a Tamiya double motor gearbox (motors replaced with stronger ones, now it can push a chair on marble tiles), a Tamiya tracks set, and a Tamiya base. The rest is hand made. The bottom one is a motor controller card with an L298D for two motors that can handle up to 4A. The top one is the brain with a 16F628A PIC working at 20MHz. It has terminals for the antennae, and connectors for the free ports, also provides 12V and 5V DC for the cards and the motors. The black box at the bottom is a 12V 0.8Ah lead / acid battery. The wireless cam is on a mini servo. The card in the middle is for servo control, auto lights (LEDs, an LDR, and an LM311 comparator), extra 5V supply, and power for the cam (9V). I finally added a little card with a KA567 and an LM324 for commanding it with a whistle when it gets stuck. The camera looks at whatever the antennae touch. PIC coded in Hitech PIC C.

Category:

Howto & Style

Tags:

• Robotics
• Embedded
• Sytems
• Autonomous
• 16F628A

[EKARVELAS]

NICE man very impresing proj...

does this one here ur voice??

WOW realy cool...what componets did u use for sensors???

thanks

[technoshamanarchist]

this one only has bump sensors, yeah this responds to a whistle... thank you :)

check out V2 and V3 for more info...

[aliencurv]

Very cool!

I haven't done any coding yet for the microphones . i like what you've done .. My next step is to build the body . then i'll slap see what i can do for these microphones :)

[technoshamanarchist]

Thanks :) KA567 (or NE567) PLL is pretty good at discriminating a certain range of frequencies, then all you need is a little amp for the electret mic. There wasn't much coding for it, 567 did most of it for me anyway. It pulls a pin on the PIC low when the frequency of the whistle is within the range it was set up for :)

[farad007]

wow, good job. I bet it took long time to program and build that thing

[technoshamanarchist]

Thanks dude ;) The programming part (about 200 lines of repetitive C code with loops and conditional statements) was the easiest, the hardware took the longest...

[technoshamanarchist]

Thanks a bunch, ratings are also appreciated ;)

[luv2befree]

Awesome robot ....(two thumbs way up!)