Why doesn't the LP include an RTC connector?

A place to talk about all the Operating Systems, Software & Hardware
Forum rules

- Posts are to be made in the relevant forum. Users are asked to read the forum descriptions before posting.

- Members should post in a way which is consistent with "normal writing". That is users should not post excessive numbers of emoticons, large, small or coloured text, etc. Similarly users should not SHOUT or use excessive punctuation (e.g. ! and ?) in topic titles or posts.

- Members should use an appropriate, descriptive subject when posting a new topic. Examples of bad subjects include; "Help me!", "I'm stuck!", "I've got an error!", etc. Examples of good subjects include; "Getting an TABLE FULL error upon login", "Cannot restore a backup".

- Members are asked to post in English only so that posts can be well received and properly monitored.

- Spam is not tolerated here under any circumstance. This includes offering hosting services (charged and free), installation services, solicitation etc. Recruiting members for your own projects (moderators, designers, professional MOD work, etc.) is not permitted and is also considered spam. Users posting spam will be warned and their post removed.

- Members should post in a way that is respectful of other users. Flaming or abusing users in any way will not be tolerated and will lead to a warning. Vulgar language and inappropriate material is not allowed and will be removed. We try to maintain a family friendly atmosphere whenever it is possible within the main subject matter of this community. Please keep this in mind when participating.

- Each user is allowed to create one account. If you would like to change your username, please contact us and, most likely, we can do it for you while you can keep all of your profile data, posts, and other content.

- If a user violates our guidelines and shows a disregard for them, our staff and our community, they run the risk of losing their account. We reserve the right to deactivate any account and to edit or remove any content without warning. These guidelines are subject to change at any time without notice.

Thank you for visiting LattePanda.com!
User avatar
LazyBunny
Posts: 65
Joined: Mon Oct 24, 2016 10:38 pm
Location: USA
Contact:

Sun Dec 25, 2016 2:30 am

I can understand not including the RTC battery itself, it is a bit optional for many people. But why not include the connector itself?
I installed an RTC connector and battery and it's working great. It remembers the time and other stuff even between full power cycles (disconnected power), even when there's no other power going in.
So i'm curious why these weren't included. They're dirt cheap, so i can't imagine this was for cost saving.

LP could sell the RTC separately for $3 and people would gladly buy them. I would have since i need RTC save function since time stamps are important even when not connected to any networks.

PS: To anyone doing this for their own, please take note of the polarity, I just used a continuity test to check which was negative and which was positive. (negative goes to ground)
Attachments
20161224_200209.jpg
20161224_200209.jpg (240.42 KiB) Viewed 11234 times
My Gameboy: http://imgur.com/a/lhY1x
My SBC Joystick: http://imgur.com/a/vtc5C
My Rockin' Dreamcast: http://imgur.com/a/kI50p
I'm Kiera, the Laziest Bunny in all of Bunny Town.

User avatar
LattePanda
Site Admin
Posts: 2748
Joined: Wed Jan 20, 2016 9:09 am

Tue Dec 27, 2016 8:27 am

Thanks for your sharing!
To be honest, we do had a RTC connector on the trial produce, but in the long distance transportation test,we found it is easy to be broken.The connector is thin... :(
And considering 1. the chip will keep count the time as long as the power cable is plugged even the system shut down, 2. Time will automatically network synchronize, 3. Battery is not allow to ship. So we canceled the interface ...
We will update some information and note into the Docs.
BTW, nice cooling fan, did you remove it from video card? how does it perform? :D
Enjoy Tinkering with LattePanda ! :lol:

User avatar
LazyBunny
Posts: 65
Joined: Mon Oct 24, 2016 10:38 pm
Location: USA
Contact:

Tue Dec 27, 2016 11:00 am

Thank you. Those are all really good reasons. There are some vertical RTC connectors that would be better suited if the RTC connector was moved to the top side and shielded by other components, Like hide it behind the Arduino pin header.

I haven't a clue where i got the mini 5v blower fan from. it's about 40mm wide and maybe 7mm thick. The air flow is better than any traditional fans of that size. The heatsink is a standard motherboard south/northbridge heatsink.
It's held on the board by some small pea sized dabs of hot-glue, since it's easy to clean up. The heatsink has high end thermal compound, And i'm using kapton tape to shroud the air through the heatsink.

Even under 100% across all cores with video rendering, it stays below 35c, so no throttling. So ever so slightly warm to the touch.

Only downside is it's noisy. But it keeps everything nice and cool. =^_^= since these little atom quad cores are known for getting really hot and thermal throttling.

Edit: PS the way the kapton tape is, the little chip near the heatsink stays fairly cool too, since a bit of air moves across that. Though i've considered putting another mini heatsink on that just for fun.
My Gameboy: http://imgur.com/a/lhY1x
My SBC Joystick: http://imgur.com/a/vtc5C
My Rockin' Dreamcast: http://imgur.com/a/kI50p
I'm Kiera, the Laziest Bunny in all of Bunny Town.

User avatar
LattePanda
Site Admin
Posts: 2748
Joined: Wed Jan 20, 2016 9:09 am

Wed Dec 28, 2016 8:13 am

A little air duct design,cool!
And yes,I saw the connector you add on, a side opening one, nice choice,
So far the PCB design is settled, but our engineer will think about it seriously in next edition.
Enjoy Tinkering with LattePanda ! :lol:

User avatar
paradoxum
Posts: 27
Joined: Sun Nov 20, 2016 6:41 pm

Thu Jan 12, 2017 6:30 pm

any way I can buy this RTC connector/battery from you OP?

User avatar
LazyBunny
Posts: 65
Joined: Mon Oct 24, 2016 10:38 pm
Location: USA
Contact:

Wed Jan 18, 2017 12:39 am

From me personally no. The connector is from Molex and the part number is 0532610271
http://www.molex.com/molex/products/dat ... EADERS.xml

You might be able to get free samples, if you do, get extras like 4.

As for the battery, this is the exact battery i went with, since it has the right connector.
http://www.ebay.com/itm/141556526819

As for soldering it on, that's on you captain. you'll need a fine tip soldering iron, and a steady hand, it's fairly small. And if you mess up, that's all on you, since there are some very tiny resistors near by. And the ground plain for the side connectors(wings?) is a bit heavy and takes a bit of heat.
My Gameboy: http://imgur.com/a/lhY1x
My SBC Joystick: http://imgur.com/a/vtc5C
My Rockin' Dreamcast: http://imgur.com/a/kI50p
I'm Kiera, the Laziest Bunny in all of Bunny Town.

User avatar
paradoxum
Posts: 27
Joined: Sun Nov 20, 2016 6:41 pm

Sun Feb 05, 2017 11:55 am

LazyBunny wrote:From me personally no. The connector is from Molex and the part number is 0532610271
http://www.molex.com/molex/products/dat ... EADERS.xml

You might be able to get free samples, if you do, get extras like 4.

As for the battery, this is the exact battery i went with, since it has the right connector.
http://www.ebay.com/itm/141556526819

As for soldering it on, that's on you captain. you'll need a fine tip soldering iron, and a steady hand, it's fairly small. And if you mess up, that's all on you, since there are some very tiny resistors near by. And the ground plain for the side connectors(wings?) is a bit heavy and takes a bit of heat.
I'm OK with soldering, but know where I might be able to get one of those connectors in the UK? Or if you have spare, might be willing to stick a couple in an envelope to me?

Thanks again

User avatar
LazyBunny
Posts: 65
Joined: Mon Oct 24, 2016 10:38 pm
Location: USA
Contact:

Mon Feb 06, 2017 6:32 pm

I do not at this time. Sorry. So long as you get one with the right polarity, you may be able to salvage a connector from an old laptop. That was ALMOST what i was about to do.
My Gameboy: http://imgur.com/a/lhY1x
My SBC Joystick: http://imgur.com/a/vtc5C
My Rockin' Dreamcast: http://imgur.com/a/kI50p
I'm Kiera, the Laziest Bunny in all of Bunny Town.

User avatar
paradoxum
Posts: 27
Joined: Sun Nov 20, 2016 6:41 pm

Sat Feb 11, 2017 9:17 pm

damn, thanks anyway. I can find them from a US ebay seller but would have to buy a pack of 100 for 15 bucks and not sure if he ships internationally. are there any more common types of cmos battery connector I might be able to use/find that you know of?

Could I just buy any cmos battery on ebay, and these male/female connectors and use these? http://www.ebay.co.uk/itm/5-PAIRS-2-Pin ... SwcLxYD9pO

Thanks again

User avatar
LazyBunny
Posts: 65
Joined: Mon Oct 24, 2016 10:38 pm
Location: USA
Contact:

Sat Feb 11, 2017 11:33 pm

According to those specs on the ebay page, it won't work. the pin spacing is..
Pin Spacing: 2.54mm / 0.1"

Which is WAY too big. you need 1.25mm
My Gameboy: http://imgur.com/a/lhY1x
My SBC Joystick: http://imgur.com/a/vtc5C
My Rockin' Dreamcast: http://imgur.com/a/kI50p
I'm Kiera, the Laziest Bunny in all of Bunny Town.

Post Reply