[Dprglist] Fwd: Need suggestion for expansion boards for STM32 to build a robot

[David P. Anderson]

Ron,

That's fine with me.  I'd probably chip in.

Also the next-to-last version had a mistake, a pin shorted to ground.  
Not sure which one is the OshPark file?

David


On 10/21/21 8:43 PM, Ron Grant via DPRGlist wrote:
>  > */[EXTERNAL SENDER]/* > > Hello Doug / Murray, > > Are you talking 
about the board I created for David Anderson? I would > consider that 
public domain if David does not mind... > > I can probably dig up the 
Eagle files for it if you don't have them. > > The board is shared on 
OshPark.com, but eagle (The tool I used for > the board layout) design 
files might not be present? Let me know... > > One thing is I can't 
remember if I used other than basic eagle > license version. I have some 
intermediate version that was about $800 > back in the old days (circa 
2010). I think there was an academic > version available at the time for 
little money. The limitation was > auto-router would not route beyond a 
board size of about 3"x4" or so, > but you could manually route traces 
beyond that limit - which I did a > few times way back around 2005. > > 
Getting the boards made though OshPark will be a bit expensive $72 > for 
3. I have used Chinese company Gojgo.com for larger quantities, > but 
OshPark does have some deals there too... > > Might be other approaches 
building breakout boards that dock to > Nucleo pin headers, but do not 
span entire Nucleo, if that makes > sense - to reduce board square 
inches. > > On Oshpark, search for shared project : NucleoBot_DPA_2 > > 
Ron > > > > > > > > -----Original Message----- From: Murray Altheim via 
DPRGlist > <dprglist at lists.dprg.org> To: dprglist at lists.dprg.org Sent: 
Thu, Oct > 21, 2021 6:15 pm Subject: Re: [Dprglist] Fwd: Need suggestion 
for > expansion boards for STM32 to build a robot > > On 22/10/21 6:08 
am, Doug Paradis via DPRGlist wrote: [...] An > alternative is a board 
laid out by club member Ron Grant. Ron's > board >> requires some more 
work on your part, but breaks out all the pins. >> It is much larger 
than the UNO sensor shield, but has some nice >> features. It may 
require having it built at a PCB company. > Hi Doug, > > Has Ron 
released the files for that board somewhere? Because nowadays > it's 
almost trivial to send a board spec off to a fab shop and have > them 
made and sent back quickly and cheaply, possibly cheaper than > from 
Adafruit or another hobbyist vendor (you may be able to buy them > for 
roughly the cost that Adafruit does as an OEM). > > Having the board 
files available would be a boon to the robotics > community, as even I 
(!) am now looking at STM32 boards, among them > the Nucleo-64s. > > 
Cheers, > > Murray > > 
........................................................................... 
 > > Murray Altheim <murray18 at altheim dot com>                      = 
=  ===
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