Re: [robotics-72] Custom PCB
| From: | Dan L. |
| Sent on: | Tuesday, February 23, 2010, 9:24 AM |
To resolve your reset problem use a separate battery for the arduino. When the servo changes direction, it draws so much current that the voltage to the arduino drops below threshold. If you don't want a separate battery, you can try adding capacitors, but to avoid having the caps supply the motors, use diode (1N4001 type) between the cap and the battery with the cap on the arduino side. That way the cap will supply only the arduino for the period of servo caused voltage dropout. Andrew Rosenblum wrote: > I built a bot with tank treads and IR remote controller. The wires for > the motor controller are spaghetti. This would be a lot > neater: https://www.solarb.... > > It uses the L293. I used a SN754410, but it probably does not matter. > I was also thinking of adding some caps to the design. When the motor > goes from full forward to full reverse, the arduino resets. I'm > guessing this is do to a voltage spike that could be suppressed by a > capacitor. > > This might be a good first project for making a custom pcb as it is so > simple. There are some eagle files for L293 > here: https://www.arduin... > > Any idea how hard this is? Would it be worth doing a workshop and > sending these off to SparkFun for fabrication? SparkFun has a > tutorial: https://www.sparkf... > > > Thanks, > Andy Rosenblum > > > > ------------------------------------------------------------------------ > *From:* Robert LaMarca <[address removed]> > *To:* [address removed] > *Sent:* Sat, January 30,[masked]:59:18 PM > *Subject:* Re: [robotics-72] Custom PCB > > This is all very interesting.. would anyone be interesting in having > some of our meeting times devoted to PCB creation? > Would someone be willing to speak at a how-to of this? > Perhaps we could schedule something for late-Feb or early March ... > which would give us time to get whatever is necessary to have a basic > workshop? > > I could see this as being a very useful foundational skill for the group. > > > > ------------------------------------------------------------------------ > *From:* Andy <[address removed]> > *To:* [address removed] > *Sent:* Sat, January 30,[masked]:49:22 AM > *Subject:* Re: [robotics-72] Custom PCB > > Hi Andrew, it's easy to make a custom pcb, there are many ways to make > it, the easiest is to buy a prototyping pcb, you can find it on ebay > or there are two electronics websites that I know (jameco.com > <https://jameco.com...; and sparkfun.com <https://sparkfun.c...;) where you > can get it , you can search in google some tutorials that teach you > how to use the pcb, but before you pass your circuit to any pcb, I > recommend you first to test your circuit design in a breadboard. But > if you want to build everything from scratch and also pass you > circuit's schematic (draw the copper lines for each component) to the > pcb you need a "copper clad" and other kinds of procedures, but it is > to long to explain it here, there are many videos on youtube about it, > or email me. > > regards, > Andy Mejia. > > On Fri, Jan 29, 2010 at 3:31 PM, Andrew Rosenblum <[address removed] > <mailto:[address removed]>> wrote: > > Anyone ever make a custom pcb? I wanted to try it for motor > driver, but wasn't sure how hard it is. > > Sent from my iPhone > > On Jan 28, 2010, at 2:47 PM, Chen <[address removed] > <mailto:[address removed]>> wrote: > >> hi Renae, >> >> I'm a bit busy on thursday, friday would be better. what time is >> good for you all? >> >> On Wed, Jan 27, 2010 at 12:59 PM, Renae <[address removed] >> <mailto:[address removed]>> wrote: >> >> Sorry for the late reply. Can my hubby and son come >> tomorow? We're in Rockaway - like a 20 minute drive. >> >> Sent via BlackBerry from T-Mobile >> >> ------------------------------------------------------------------------ >> *From: * Chen <[address removed] <mailto:[address removed]>> >> *Date: *Wed, 27 Jan[masked]:05:51 -0500 >> *To: *<[address removed] <mailto:[address removed]>> >> *Subject: *Re: [robotics-72] Lego Mindstorms >> >> hi Renae, >> >> I'm in Elmhurst, Queens, near the Queens Center Mall >> >> what day / time would you like to come pick them up? >> >> Chen >> >> >> >> On Tue, Jan 26, 2010 at 9:37 AM, Renae <[address removed] >> <mailto:[address removed]>> wrote: >> >> I'd love to have them both. Where are you located? >> ------Original Message------ >> From: Chen >> Sender: [address removed] >> <mailto:[address removed]> >> To: [address removed] <mailto:[address removed]> >> ReplyTo: [address removed] >> <mailto:[address removed]> >> Sent: Jan 25,[masked]:02 PM >> Subject: Re: [robotics-72] Lego Mindstorms >> >> Hi everyone, >> >> Sorry for the mass mail. I've got an old Lego Mindstorms >> and a radio controlled toy truck I can donate for >> research for the lab or to anyone who wants them. >> >> Unfortunately, they are quite large items and I don't >> have a car so if anyone wants they'll need to come pick >> them up. >> >> Please let me know. >> >> Sincerely, >> >> Chen >> >> >> >> >> -- >> Please Note: If you hit "REPLY", your message will be >> sent to everyone on this mailing list >> ([address removed] <mailto:[address removed]> >> <mailto:[address removed] >> <mailto:[address removed]>> ) >> This message was sent by Chen ([address removed] >> <mailto:[address removed]>) from The New York Robotics >> <https://robotics.m...; . >> To learn more about Chen, visit his/her member profile >> <https://robotics.m...; >> To unsubscribe or to update your mailing list settings, >> click here <https://www.meetup...; >> >> Meetup Inc. PO Box 4668 #37895 New York, New York >> [masked] | [address removed] <mailto:[address removed]> >> >> Sent via BlackBerry from T-Mobile >> >> >> -- >> Please Note: If you hit "REPLY", your message will be >> sent to everyone on this mailing list >> ([address removed] <mailto:[address removed]>) >> https://robotics.m... >> This message was sent by Renae ([address removed] >> <mailto:[address removed]>) from The New York Robotics. >> To learn more about Renae, visit his/her member profile: >> https://robotics.m... >> To unsubscribe or to update your mailing list settings, >> click here: https://www.meetup... >> Meetup Inc. PO Box 4668 #37895 New York, New York >> [masked] | [address removed] <mailto:[address removed]> >> >> >> >> >> >> >> -- >> Please Note: If you hit "*REPLY*", your message will be sent >> to *everyone* on this mailing list ([address removed] >> <mailto:[address removed]>) >> This message was sent by Chen ([address removed] >> <mailto:[address removed]>) from The New York Robotics >> <https://robotics.m...;. >> To learn more about Chen, visit his/her member profile >> <https://robotics.m...; >> To unsubscribe or to update your mailing list settings, click >> here <https://www.meetup...; >> >> Meetup, PO Box 4668 #37895 New York, New York[masked] | >> [address removed] <mailto:[address removed]> >> >> >> >> -- >> Please Note: If you hit "*REPLY*", your message will be sent >> to *everyone* on this mailing list ([address removed] >> <mailto:[address removed]>) >> This message was sent by Renae ([address removed] >> <mailto:[address removed]>) from The New York Robotics >> <https://robotics.m...;. >> To learn more about Renae, visit his/her member profile >> <https://robotics.m...; >> To unsubscribe or to update your mailing list settings, click >> here <https://www.meetup...; >> >> Meetup, PO Box 4668 #37895 New York, New York[masked] | >> [address removed] <mailto:[address removed]> >> >> >> >> >> >> >> -- >> Please Note: If you hit "*REPLY*", your message will be sent to >> *everyone* on this mailing list ([address removed] >> <mailto:[address removed]>) >> This message was sent by Chen ([address removed] >> <mailto:[address removed]>) from The New York Robotics >> <https://robotics.m...;. >> To learn more about Chen, visit his/her member profile >> <https://robotics.m...; >> To unsubscribe or to update your mailing list settings, click >> here <https://www.meetup...; >> >> Meetup Inc. PO Box 4668 #37895 New York, New York[masked] | >> [address removed] <mailto:[address removed]> > > > > > > -- > Please Note: If you hit "*REPLY*", your message will be sent to > *everyone* on this mailing list ([address removed] > <mailto:[address removed]>) > This message was sent by Andrew Rosenblum ([address removed] > <mailto:[address removed]>) from The New York Robotics > <https://robotics.m...;. > To learn more about Andrew Rosenblum, visit his/her member profile > <https://robotics.m...; > To unsubscribe or to update your mailing list settings, click here > <https://www.meetup...; > > Meetup, PO Box 4668 #37895 New York, New York[masked] | > [address removed] <mailto:[address removed]> > > > > > > > -- > Please Note: If you hit "*REPLY*", your message will be sent to > *everyone* on this mailing list ([address removed] > <mailto:[address removed]>) > This message was sent by Andy ([address removed]) from The New > York Robotics <https://robotics.m...;. > To learn more about Andy, visit his/her member profile > <https://robotics.m...; > To unsubscribe or to update your mailing list settings, click here > <https://www.meetup...; > > Meetup, PO Box 4668 #37895 New York, New York[masked] | > [address removed] > > > > > -- > Please Note: If you hit "*REPLY*", your message will be sent to > *everyone* on this mailing list ([address removed] > <mailto:[address removed]>) > This message was sent by Robert LaMarca ([address removed]) > from The New York Robotics <https://robotics.m...;. > To learn more about Robert LaMarca, visit his/her member profile > <https://robotics.m...; > To unsubscribe or to update your mailing list settings, click here > <https://www.meetup...; > > Meetup Inc. PO Box 4668 #37895 New York, New York[masked] | > [address removed] > > > > > > -- > Please Note: If you hit "*REPLY*", your message will be sent to > *everyone* on this mailing list ([address removed] > <mailto:[address removed]>) > This message was sent by Andrew Rosenblum ([address removed]) from > The New York Robotics <https://robotics.m...;. > To learn more about Andrew Rosenblum, visit his/her member profile > <https://robotics.m...; > To unsubscribe or to update your mailing list settings, click here > <https://robotics.m...; > > Meetup, PO Box 4668 #37895 New York, New York[masked] | > [address removed]
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