BRT Community

General Category => Discussion - MCU => Topic started by: hdc on August 25, 2020, 05:57:28 AM

Title: MM900EV1B dimensions - relative board X/Y of J2 from CN3
Post by: hdc on August 25, 2020, 05:57:28 AM

Hello all - hope everyone is doing well,

On the MM900EV1B board, what is the position of the

   J2 connector (dual-entry SPI master)

relative to the

   CN3 connector (40-pin external I/O) ?

For example, J2 pin 1 relative to CN3 pin 1 or 27 or each
relative to the origin marker on page 6 of the MM900EVxB
Datasheet v1.0.

Thanks in advance.

Title: Re: MM900EV1B dimensions - relative board X/Y of J2 from CN3
Post by: BRT Community on August 26, 2020, 04:32:50 PM

Hello,

Here are the measurements taken using Altium Designer:

CN3 Pin1 (topside)
X = 3.37mm
Y = 3.9mm

J2 Pin1 (bottomside)
X = 36.375mm
Y = 76.43mm

We can also supply a 3D step model of the board which will allow you to take you own measurements.
If you would like this, please contact us (https://brtchip.com/contact-us/) via email.

Best Regards,
BRT Community

Title: Re: MM900EV1B dimensions - relative board X/Y of J2 from CN3
Post by: hdc on August 26, 2020, 08:58:40 PM

Thanks very much.  I'll follow-up by e-mail;  having a step model would be useful as well. (update - e-mailed the support.us address.)

David

Title: Re: MM900EV1B dimensions - relative board X/Y of J2 from CN3
Post by: BRT Community on August 27, 2020, 10:02:08 AM

Hello,

OK we have received your email and will send across the 3D step model of the module.

Best Regards,
BRT Community

Title: Re: MM900EV1B dimensions - relative board X/Y of J2 from CN3
Post by: hdc on December 23, 2020, 07:46:33 PM

Following up to thank you for the support here and by e-mail.

After clarifying my question we ended up using:

X = 33.005 mm
Y = 74.26  mm

as the position of the pin center for J2-1 relative to CN3-1. 

These (unofficial) dimensions worked well for us.

Thanks again,
David