PPDB

John Board

Been looking at the Propeller Profesional Development Board, mainly at its motor drivers. How many motors can I hook up to it, and can I control both directions?

Here is the datasheet: http://www.parallax.com/Portals/0/Downloads/docs/prod/prop/32111-Propeller%20Professional%20Development%20Board.pdf

Thanks, John

StefanL38

Hi John,

take a look into the datasheet of the Chip itself (L293D)

http://www.google.de/search?num=100&hl=en&lr=&safe=off&as_qdr=all&q=datasheet+L293D&oq=datasheet+L293D&aq=f&aqi=&aql=&gs_sm=3&gs_upl=3540l3540l0l4133l1l1l0l0l0l0l0l0ll0l0&gs_l=serp.3...3540l3540l0l4133l1l1l0l0l0l0l0l0ll0l0.frgbld

4 DC motors with one direction two DC-motors with two directions
one bipolar steppermotor

Buying a PPDB just bevause of the motordrivers is oversized. You can connect motordrivers like the L293D, ULN2308, L298 etc.
directly to any propeller-chip or propeller-board. These chips itself are just a few dollars.

best regards
Stefan

Duane Degn

StefanL38 wrote: »

Buying a PPDB just bevause of the motordrivers is oversized. You can connect motordrivers like the L293D, ULN2308, L298 etc.
directly to any propeller-chip or propeller-board. These chips itself are just a few dollars.

I agree with Stefan.

John, have you taken a look at this project? I'm using L298N chips. SparkFun has a good price on them. As you can see from some my latest videos, they drive the motors on my robot just fine. The also don't get hot.

Publison

The L293D will drive four motors in on direction, or two motors in two directions. See data sheet:

http://www.ti.com/lit/ds/symlink/l293.pdf

The 754410 is a direct replacement, and handles more current. Direct plug-in replacement.

Jim

Duane Degn

Publison wrote: »

The L293D will drive four motors in on direction, or two motors in two directions. See data sheet:

http://www.ti.com/lit/ds/symlink/l293.pdf

The 754410 is a direct replacement, and handles more current. Direct plug-in replacement.

Jim

The L298N doesn't cost much more than the 754410 and I like it a lot more. The 754410s aways seemed to get hot (even when piggy backed). I drive the L298N pretty much the same as the 754410 chips.

tonyp12

What kind of Amp ratings are you looking for?

A Quickstart Prop board ($29) and my Octal (8) bi-directional motor board ($39) can do 1.5amp (2 peak) each, 11volt max.
The PCBs left China 10days ago, so I should have them any day now.