Rpi2 implementation BOM

[imuguruza]

• Check for voltage translator breakouts for I2C,....

[jlamperez]

We need:

• ADC-> http://4tronix.co.uk/store/index.php?rt=product/product&product_id=405
• TXS0108E ->http://www.ebay.es/itm/MCU-TXS0108E-Full-Duplex-8-channels-Level-Conversion-Module-/281916762626?hash=item41a38c6a02:g:PqsAAOSwqYBWoriU

[imuguruza]

Please specify quantities

[jlamperez]

Two of each will be ok

[imuguruza]

Have you found any I2C voltage translator as I suggested yesterday??

[jlamperez]

The model of voltage translator TXS0108E I put here is suitable for I2C and SPI communications.

[vmayoral]

@jlamperez how about the following parts:

• http://www.digikey.es/product-search/en/programmers-development-systems/evaluation-and-demonstration-boards-and-kits/2622039?k=TXB0108
• http://www.digikey.es/product-detail/en/1085/1528-1461-ND/5761229

Have a look at the voltage translator replacements. IMO it should do it. I'll wait for confirmation before ordering.

[jlamperez]

ADC I agree.

With TXB0108 voltage translator as written in the page 11 of the datasheet:

the TXB0108 should not be used in applications such as I2C or 1-Wire where an open-drain driver is connected on the bidirectional data I/O. For these applications, use a device from the TI TXS01xx series of level translators.

This voltage translator could be useful for the other pins but not for I2C and that was the reason why I chose TXS0108E family and this breakout board. About this breakout boards I can't find a reliable distributor, only ebay and some web pages.

For the other hand there could be another option buying this breakout board specify for I2C: http://www.digikey.com/product-search/en?mpart=BOB-11955&vendor=1568 This could be combine with the TXB0108 link you have sent for our purpose.

[vmayoral]

Fine then. Find another option in the spanish warehouse of Digikey please.

2016-02-20 18:43 GMT+01:00 Jorge notifications@github.com:

ADC I agree.

With TXB0108 voltage translator as written in the page 11 of the datasheet:

the TXB0108 should not be used in applications such as I2C or 1-Wire where an open-drain driver is connected on the bidirectional data I/O. For these applications, use a device from the TI TXS01xx series of level translators.

This voltage translator could be useful for the other pins but not for I2C and that was the reason why I chose TXS0108E family and this breakout board. About this breakout boards I can't find a reliable distributor, only ebay and some web pages.

For the other hand there could be another option buying this breakout board specify for I2C: http://www.digikey.com/product-search/en?mpart=BOB-11955&vendor=1568 This could be combine with the TXB0108 link you have sent for our purpose.

— Reply to this email directly or view it on GitHub https://github.com/erlerobot/smart_motor/issues/32#issuecomment-186657941 .

[jlamperez]

For I2C: http://www.digikey.es/product-search/en/programmers-development-systems/evaluation-and-demonstration-boards-and-kits/2622039?k=Pca9306 Rest of GPIO(H bridge): http://www.digikey.es/product-search/en/programmers-development-systems/evaluation-and-demonstration-boards-and-kits/2622039?k=TXB0108 ADC: http://www.digikey.es/product-detail/en/1085/1528-1461-ND/5761229

[vmayoral]

Thanks @jlamperez, ordered. Should arrive next week.

[vmayoral]

Got the components. @jlamperez, @goros1993, @SaioaRomero. You can come and get them whenever you want.

[jlamperez]

When do you close on Friday afternoon @vmayoral?

[vmayoral]

I'd suggest to come before 5PM. After that it might be that we're not around.

2016-02-25 10:56 GMT+01:00 Jorge notifications@github.com:

When do you close on Friday afternoon @vmayoral https://github.com/vmayoral?

— Reply to this email directly or view it on GitHub https://github.com/erlerobot/smart_motor/issues/32#issuecomment-188698533 .

[jlamperez]

Okey, I have a meeting at 4PM so I will go on Monday morning taking advantage of my return from Pamplona. Between 9-10 a.m good?

[vmayoral]

Perfect!

2016-02-25 11:09 GMT+01:00 Jorge notifications@github.com:

Okey, I have a meeting at 4PM so I will go on Monday morning taking advantage of my return from Pamplona. Between 9-10 a.m good?

— Reply to this email directly or view it on GitHub https://github.com/erlerobot/smart_motor/issues/32#issuecomment-188703502 .