Mongoose Mechatronic Chassis first production photos - Electronic Circuits Projects Diagrams Free

blueroomelectronics · 8th August 2007, 02:09 PM

Here are photos of the first production version of the Mongoose.

Front (note the standoffs plus top & forward mounted connectors for your own PCBs or future kits)

Underside (TTL Serial connector, thermal fuse and a good look at the ball caster)

Rear (note the ballcaster & 0.1uf caps on the motors if you look carefully you can even see the painted rotation sensor stripes on the blue front gears, it's also starting to rain

Bryan76 · 8th August 2007, 04:41 PM

Very nice. I was wondering why did you mount the pcb to the the front and not the top? The only reason I ask is that there doesn't seem to be much clearance from the pcb to the ground.

blueroomelectronics · 9th August 2007, 05:34 PM

The front mounted PCB is 7.6mm (.3") from the floor. The top was reserved for a breadboard or other user options. There is also a front mounted I/O and mount points for user PCB designs like rangefinders, line followers (where being close to the floor is nessary). It's designed for flat indoor surfaces.

Bryan76 · 9th August 2007, 06:47 PM

Quote:

Originally Posted by blueroomelectronics

The front mounted PCB is 7.6mm (.3") from the floor. The top was reserved for a breadboard or other user options. There is also a front mounted I/O and mount points for user PCB designs like rangefinders, line followers (where being close to the floor is nessary). It's designed for flat indoor surfaces.

10-4, keep up the good work!

bloody-orc · 9th August 2007, 09:42 PM

Very nice! you finally finished the bugger. Nice work.

Mike, K8LH · 10th August 2007, 12:55 AM

Which parts/components did you actually make Bill. Are the motors and gears and housing a standard part or did you design and build that/those components?

Looks very nice...

blueroomelectronics · 10th August 2007, 01:13 AM

All the motors, gears and wheels are made by Tamiya. Most hobby stores should be able to get them.
They are very high quality and not terribly expensive.

Tamiya double gearbox includes motors and gear grease, Mongoose uses the 115:1 ratio setup. Those square holes in the front are ideal for the opto sensor set. (they need only a little enlarging) #70168

Tamiya 58mm Wheels & tires #70145

Tamiya ball caster #70144

10th August 2007, 03:44 AM

Would I just give my local hobbystore these part numbers?

blueroomelectronics · 10th August 2007, 04:21 AM

Quote:

Originally Posted by Robot builder 101

Would I just give my local hobbystore these part numbers?

Yep, those are the Tamiya part numbers. Any hobby store that sells Tamiya models should be able to order them.

10th August 2007, 05:07 AM

Oh, well theres the problem. They dont sell any tamiya model stuff.

Pommie · 10th August 2007, 05:13 AM

Quote:

Originally Posted by Robot builder 101

Oh, well theres the problem. They dont sell any tamiya model stuff.

You won't get very far if you limit yourself to one store.

Mike.

Pommie · 10th August 2007, 05:16 AM

Bill,

It looks very nice. Can I just ask, where on earth did you get that right angled sil socket?

Any plans for add on sensor boards?

Mike.

10th August 2007, 05:28 AM

Jameco!!!

https://www.jameco.com/webapp/wcs/st...roductId=71160

blueroomelectronics · 10th August 2007, 02:16 PM

Quote:

Originally Posted by Pommie

Bill,

It looks very nice. Can I just ask, where on earth did you get that right angled sil socket?

Any plans for add on sensor boards?

Mike.

Lucky for me Creatron in Toronto has little difficulty getting almost any part.

I'm a little stumped on Ethernet jacks with magnetics for the next kit.

As for a hobby store without Tamiya, try an RC store. Tamiya is a huge company.

justDIY · 10th August 2007, 03:26 PM

Quote:

Originally Posted by blueroomelectronics

I'm a little stumped on Ethernet jacks with magnetics for the next kit.

nice work with the robot - looks like a great platform to experiment with.

regarding the jacks with integerated magnetics, the supplier that comes to mind is Pulse and their MagJack product.

Mouser has the Pulse J0026D21 for $3.49 ... Pulse seems to have a lot of options for the jack with different internal magnetic and wiring configurations, I'm not sure what is normal or what is required by your PHY.

here is the datasheet, I think they've got direct link protection in place, so this link may not work, in that case just visit the website directly and plug the number into the search box.

http://www.pulseeng.com/products/datasheets/J403.pdf

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8th August 2007, 02:09 PM	(permalink)
blueroomelectronics	Mongoose Mechatronic Chassis first production photos Here are photos of the first production version of the Mongoose. Front (note the standoffs plus top & forward mounted connectors for your own PCBs or future kits) Underside (TTL Serial connector, thermal fuse and a good look at the ball caster) Rear (note the ballcaster & 0.1uf caps on the motors if you look carefully you can even see the painted rotation sensor stripes on the blue front gears, it's also starting to rain __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com Last edited by blueroomelectronics; 8th August 2007 at 02:22 PM.

8th August 2007, 04:41 PM	(permalink)
Bryan76	Very nice. I was wondering why did you mount the pcb to the the front and not the top? The only reason I ask is that there doesn't seem to be much clearance from the pcb to the ground. Last edited by Bryan76; 8th August 2007 at 06:38 PM.

9th August 2007, 05:34 PM	(permalink)
blueroomelectronics	The front mounted PCB is 7.6mm (.3") from the floor. The top was reserved for a breadboard or other user options. There is also a front mounted I/O and mount points for user PCB designs like rangefinders, line followers (where being close to the floor is nessary). It's designed for flat indoor surfaces. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com Last edited by blueroomelectronics; 9th August 2007 at 05:39 PM.

9th August 2007, 09:42 PM	(permalink)
bloody-orc	Very nice! you finally finished the bugger. Nice work. __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

10th August 2007, 12:55 AM	(permalink)
Mike, K8LH	Which parts/components did you actually make Bill. Are the motors and gears and housing a standard part or did you design and build that/those components? Looks very nice...

10th August 2007, 01:13 AM	(permalink)
blueroomelectronics	All the motors, gears and wheels are made by Tamiya. Most hobby stores should be able to get them. They are very high quality and not terribly expensive. Tamiya double gearbox includes motors and gear grease, Mongoose uses the 115:1 ratio setup. Those square holes in the front are ideal for the opto sensor set. (they need only a little enlarging) #70168 Tamiya 58mm Wheels & tires #70145 Tamiya ball caster #70144 __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com Last edited by blueroomelectronics; 10th August 2007 at 01:22 AM.

10th August 2007, 03:44 AM	(permalink)
Robot builder 101	Would I just give my local hobbystore these part numbers?

10th August 2007, 05:07 AM	(permalink)
Robot builder 101	Oh, well theres the problem. They dont sell any tamiya model stuff.

10th August 2007, 05:16 AM	(permalink)
Pommie	Bill, It looks very nice. Can I just ask, where on earth did you get that right angled sil socket? Any plans for add on sensor boards? Mike.

10th August 2007, 05:28 AM	(permalink)
Robot builder 101	Jameco!!! https://www.jameco.com/webapp/wcs/st...roductId=71160