Battery based atmega328p sensor (no SMD)

[GertSanders]

@alexsh1

Some pins moved again. I have not yet ordered this, I normally sleep on it for a few days, then check again, and if I feel OK that no more details need to move, I will trigger an order and share. I'll let you know when that happens.

I'm still wondering whether I should put soms test-pads in place, to allow ISP programming of a bootloader after the mcu is put in place. It would require some round test-pads on the bottom. I will think about this tomorrow after I have slept on it.

UPDATE: found a small error in my schematic: C10 is not needed. So rerouting will be needed, I want this location for something else.

[GertSanders]

@alexsh1

board is ordered and shared from OSHPark: https://oshpark.com/shared_projects/2uuSjIIQ

[alexsh1]

@GertSanders said:

@alexsh1

board is ordered and shared from OSHPark: https://oshpark.com/shared_projects/2uuSjIIQ

Thanks for this! Can you please share the BOM file?
I placed my order already!

[GertSanders]

@alexsh1

I will add it on OpenHardware.io

[GertSanders]

@alexsh1
In what capacity do you get the AA size LiFeP4 batteries ?

[alexsh1]

@GertSanders said:

@alexsh1
In what capacity do you get the AA size LiFeP4 batteries ?

@GertSanders
OK, I have a couple of 14500 LiFeP4 3.2V each. They are only 600mA. They are not my favourite though. I also have (1) lithium rechargeable AA 1500mA 1.5V (charging 5V from USB) and (2) NiZn AA 1.6V 2200mA - these are my favourite so far.

The problem for me is that my new charging device has not arrived yet from China and I cannot charge NiZn. I have discharged a few and did not a chance to charge them

[gloob]

Is there a case/housing available instead of printing an own one?

[GertSanders]

@gloob

No, this board was not made for a specific housing. It just fits the dual AA(A) battery holders.

[gloob]

Thanks for your feedback. Do you have a link for a AA battery holder? I could only find AAA holders with pins.

[alexsh1]

@gloob have you tried to use google? There are plenty of 2xAA holders on eBay as well.

http://uk.farnell.com/keystone/2462/battery-holder/dp/1702630

[gloob]

When you read the data sheet correctly you can see, that the distance between the pins is different for a AA and AAA battery holder. That`s why I was asking if somebody can recommend a holder that fits.