Motor Controller

[Omar.M]

About the 555 timer, I have set up two identical timer sets so that I can connect one to the 1,2 EN and the other set to the 3,4 EN pins. Not sure why, but I might be able to use this if I ever want one side to be faster than the other. Okay, I have nothing =P. I just thought I'd make an extra set anyway.

If I understood that correctly, Ground Pin 1 and 2 can be connected to the Logic Voltage ground and the other two to the motor ground? I'm rather confused about which is for which supply line...

Omar

 

[Hank Fletcher]

Do this:
https://www.kronosrobotics.com/an101/DAN101.shtml

or this:
https://www.kronosrobotics.com/an101/AAN101.shtml
Regarding the latter, I'm not sure that you'll need the resistors on your output pins.

 

[Hank Fletcher]

Omar,
Check out this link, it'll come in handy when you're done PWM with the 555:
**broken link removed**

 

[airbrush]

-sigh-
I called them today, many many times. No one picked up on the toll-free and normal number.
Is there a chance this store is closed?

I hope they'll pick up next time.

...seems like the store is closed, there is a paper taped on the front door about renewals and lease agreement...guess they didn't resign their lease or something???

That sucks...now i cant find anyone locally to get my stuff from.
I needed one 7810 voltage regulator....does anyone know of any other canadian electronic component sources with cheap shipping??

 

[Hank Fletcher]

does anyone know of any other canadian electronic component sources

This question was posted recently, I think in the General Electronics forum. Can't say what postage will work out to, but I think the two best suggestions were Sayal and Newark. Sayal just opened up a store in Cambridge, so maybe that's not too far for a weekend drive (we used to make it door to door from our place in London to my girlfriend's parents' in Cambridge in just under an hour). That's a shame about Counterparts - I wonder what happened? For odd bits of electronics, you could check into Forest City Surplus every now and then - expect to find a good deal, but not necessarily what you want! For FCS, btw, they have tons of stock that they never get around to posting on their website - although I can't remember exactly how to get to the link from their main website, there's somewhere on there you can get a massive text list with all kinds of junk, all at prices that you can't even believe it's worth their while to be in the biz.

 

[blueroomelectronics]

It's lores, but here's the 1st photo of the Mongoose chassis. It's mounted on standoffs and a green PCB so I can run the motors.
PS I'm going to contact Sayal to carry my kits.
**broken link removed**

 

[Omar.M]

Wow Bill, that looks so excellent! Totally blows my robot out of the water. I really like it, I think this kit will be really popular!

What did Sayal say?