STM CircleOS forum / Battery charging

nrousselca · 2009-08-04 18:38:05

Hi,
did anyone try to charge the primer2 bat with an external power source other then usb
Thanks for helping.
Regards

ShadowPhoenix · 2009-08-04 20:20:16

Do you mean through the extension connector?

nrousselca · 2009-08-04 23:41:38

Hi,
Yes may be through a modified usb cable.

ShadowPhoenix · 2009-08-04 23:57:51

Yes. Just get any miniB (I believe) USB connectors, and provide +5v to it in any way you want. For example, outlet,battery, etc.

Francis · 2009-08-05 06:19:30

One pin of the extension connector is reserved for this purpose. But for the future primers, we will reassign this pin to VBat (in order to add a specirfic regulator on the extension board).

nrousselca · 2009-08-05 13:15:12

Hi,
Just fund this little adapter

http://store.fundamentallogic.com/ecom/ … cts_id=490

nrousselca · 2009-08-05 14:38:09

Hi,
And also found for portable needs:

dc/dc stepup using 2 aa battery (3v to 5v)
http://ladyada.net/make/mintyboost/index.html

Stmicro: using ST5Rxx serie (A/N)
http://www.st.com/stonline/products/lit … /11619.pdf
ST5R00:
http://www.datasheetcatalog.org/datashe … r6r4ky.pdf

Regards

# 1 2009-08-04 18:38:05 Battery charging

Battery charging

# 2 2009-08-04 20:20:16 Battery charging

Re: Battery charging

# 3 2009-08-04 23:41:38 Battery charging

Re: Battery charging

# 4 2009-08-04 23:57:51 Battery charging

Re: Battery charging

# 5 2009-08-05 06:19:30 Battery charging

Re: Battery charging

# 6 2009-08-05 13:15:12 Battery charging

Re: Battery charging

# 7 2009-08-05 14:38:09 Battery charging

Re: Battery charging

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