CE Project: CE Bot [PART TWO]

[xheavenlyx]

Excellent work KINETIC! I loved the last design (#8) But I think dont spend a lot of time on that rite now, keep doing it side by side. There is something important that you will have to do in some time.

I will post what it is soon. And its very important

[KINETIC_JOULES]

Thanks! It's basically how I progressed. They're in order. I'm glad you like it! And so, what you're saying is just wait and don't work on the design right now? You have something in mind?

[xheavenlyx]

READ THIS POST CAREFULLY. IMPORTANT!




Ok, I have a proposal.

Before we start finalizing the chassis design, we need to know what the chassis will be holding. Its like building a foundation without knowing if the building is a high-rise or a storeroom!

Plus we will also know the power requirment and the total weight of payload.

===========================================

So our next task is SENSORS:

1. Find the properties for each sensor type. Main points like Input method and Output method. (see example at end)

2. Find various alternatives or vendor specific devices.

3. Datasheet for each sensor or specifications from website.

4. Lastly, why you think we should use the specified sensor (optional).

===EXAMPLE===

1. Video Camera: "Various properties..." then Input: HW:USB, SW:<instructions>. Output: HW: USB, SW: ideodata, <instructions>

2. There are many cameras so we can see the cheapest and most flexible one, like with more range of operating resolution 300x600 to 1270x700). (This is just an example).

3. Find datasheet or if not then specifications from product website.

4. "This perticular model has ... this ... and thats why we should use it...blah blah".

===END EXAMPLE===

So tell me who wants to take which sensors. If there is an overlap we will look at that and deside by tommorow.

The research must finish within a week. The final report will be after that.

[KINETIC_JOULES]

I'm still concerned about the body design. . . and do you mind if I experiment with the sensors later?

[ash]

Xhx, a week?

Thats a great diagram you drew. Things are more organized now!

I'll take the camera. I've already done some research on it for my CANSAT project. We have two options.. either we hack an existing webcam, or we fabricate our own camera using CCD imagers. At the moment, a webcam hack is doable because you'll connect it directly to the laptop through USB. No need to worry about decoding the USB signals

I propose this webcam:
Philips SPC900NC
CCD sensor: Sony ICX098BQ
Resolution: 640X 480
Pixels: 300K
Pixel size: 5.6 micron

We can mount a better lens on the existing one for better image quality, as well as put it on servos so it can rotate in the x-y axi. If possible, we can also make a mechanism to automatically change the image filters, so we could switch from normal to infrared views

I'll upload other webcams and the datasheets of their CCD sensors on CE Lab tomorrow or the day after.

I might as well take the light sensors as well, unless someone else wants its.

@ Kinetic
Keep up the good work! By the way, the word "censor" is almost an antonym of "sensor" if you think about it Don't confuse the two!

[raj87verma88]

What are the expected weights and sizes of the equipments that will be fit on the robot. I mean other than the drive train and chases.

[KINETIC_JOULES]

Originally Posted by ash

@ Kinetic
Keep up the good work! By the way, the word "censor" is almost an antonym of "sensor" if you think about it Don't confuse the two!

Sorry. That was an accident!

[ash]

I gave an estimation of 20Kg before, but that was a number I pulled out of thin air (sorta). Sensors are quite negligible in size and weight compared to other subsystems. The heaviest stuff would probably be the batteries, motors, wheels, laptop as well as additional actuators such as grippers.

At the beginning, the max footprint that I proposed was the size of a standard magazine. Perhaps we should extend that to around A3 size (just the body).. it looks enough for our purposes.

We could certainly find out these weights in our research stuff, if one takes the time to do it though

[KINETIC_JOULES]

Did you happen to see that I made a place for the lap top in my design. That's just where it's supposed to sit. ^_^ what do ya think?

[raj87verma88]

I was just thinking, that we need to have an approximate idea of the total weight that the chases and wheels will support. It would help in the designing and fabrication of these parts. It would also help in the stress calculation and other equivalent stuff.