Open Call for the LattePanda Alpha and Delta Ecosystem

General Info and Announcements from the LatteTeam and Distributors
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DrCox
Posts: 11
Joined: Wed Sep 06, 2017 3:53 pm

Mon Jan 29, 2018 6:02 pm

GTC wrote:
Mon Jan 29, 2018 4:42 pm
Yup, pretty cool add-on for the LP, we couldn't be happier with the UPS and monitoring features. Our LP behaves more or less like a laptop/tablet at the moment!
Maybe you can share the name of IC models that you use?

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LattePanda
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Posts: 2468
Joined: Wed Jan 20, 2016 9:09 am

Tue Jan 30, 2018 8:27 am

GTC wrote:
Mon Jan 29, 2018 4:42 pm
Yup, pretty cool add-on for the LP, we couldn't be happier with the UPS and monitoring features. Our LP behaves more or less like a laptop/tablet at the moment!

OT; if there is any interest I could send out a few to DFR for re-sale along with the source code. We have 72 units in hands (I think/hope) but we need to keep roughly 50 for our customers (already sold). Therefore DFR could easily get something like 20~25 units right away to ship out to you folks. We could get more manufactured also... already have the pick & place program so these thing can go quick if needed ;)

If LP team send us a dev board, we'll adapt it for the Alpha also! In whatever format they need it (i2C/APCI, Serial, MicroUSB, whatever the community fancy ~ we can do it). We are more than happy to get involved
Hi, is this designed by your team?
Looks awesome, hope to discuss of it !
So you are selling it now, can we get more details of it? Like the all kinds of parameter .
Hope to get a reply! :)
Enjoy Tinkering with LattePanda ! :lol:

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Krzysztof
Posts: 10
Joined: Mon Jan 01, 2018 7:02 pm

Wed Jan 31, 2018 10:10 am

GTC wrote:
Thu Jan 25, 2018 6:49 pm
You and I have/had the same road map in terms of energy requirements this little LP Beast needs! Only recently we've signed off the work that went on providing fully automated power management functions to the LP (and other SBC we have to work with occasionally).

Although this model below was specifically designed to accommodate the LP. Features include UPS, start-up and shutdown delays, battery energy consumption/rate & voltage monitoring, user-defined charging rates (0.5C~5C), can charge between 100mV~3000mV (also user-defined), circuit & battery protections, sleep mode, supported by a C# library for client side. Rated at 5A output, etc etc

Final product works off a LiPo 3.7V (single-cell). LP rocks on any battery between 1500mah up to 12,000mah!!! Let me know what you think.
Hi, that looks really nice, could you provide more details and maybe a lnk?

cheers,
Krzysztof

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GTC
Posts: 32
Joined: Fri Sep 22, 2017 7:26 pm

Sat Feb 03, 2018 9:43 am

Sincere apologies for the delay. I didn’t had much time to have a look at the forum during the last 3 days. In fact, today is the first day I get to sit down to do things that matters loll Love weekends 😉

As requested, see below features and pictures and let me know if this is of any interest to any of you folks. If anyone from the LP Team knows if DFRobot would be interested in carrying this amazing item in their inventory, send me a PM and I’ll be happy to revert back with a quote for the quantity they require. RRP(MSRP): $65


MiniUPS for LattePanda
  • Input Voltage: Min 5V ~ Max 14V
  • Output Voltage: Max 5V -3Amp
  • Battery chemistry: Lithium Polymer (*)
  • Number of cell: 1 (one); 3.7V
  • PCB Size: 50mm * 55mm
  • Color: Black
  • Kit includes:
    1x MiniUPS
    1x Mounting kit (also include 2.54mm JST connectors & Headers)
    1x USB cable
    1x Solid Model (IGES/STEP)
    1x MiniUPS Programmer (w/GUI) (*.exe, windows 7/8/10)
    * We do not sell/ship out batteries, any 3.7V LiPo can be used (source locally!)

Main Features:
  • UPS (Uninterrupted Power Supply)
    If the main input power is lost, the device seamlessly switch to battery power. Exact same features as a laptop really!
  • 5V Power-On Delay
    Occasionally required in specialized installations where boot-up integrity is required. (think iPhone charge design). This power-on delay, and all other features discussed here, can be set by the user using the supplied MiniUPS Programmer (w/GUI). Unit is second (Min: 0 sec / Max: 30sec). Setting this to 0 second automatically cancels this feature, shall you not require it.
  • 5V Power-Off Delay
    The power-off delay is required in a scenario where the operating system is allowed to carry a fully automated shutdown. We've developed software which can monitor the main input power and programmatically automate a windows shutdown (no more power cut crashes and data loss!). Two options are offered: 1) immediate graceful shutdown after main power loss -OR- 2) when battery reaches a low capacity level similar to a laptop (e.g. 10% remaining charge). Shutdown, Sleep or Hibernation are supported. Unit is second (Min: 0 sec / Max: 199sec).
  • Charging Current
    Vital! Set maximum charging current allowed for a given LiPo cell capacity. More than often, responsible battery manufacturer spec the charging rate of their batteries. Therefore we've implemented this feature for you to "safely" set the max charging current (or rate) for your given battery. If done right, you'll want to ensure that the battery you plan on purchasing has an official record (e.g. mfg datasheet) for charging and discharging rates. Unit is millivolt (Min: 100mV / Max: 3000mV)
    • Battery scenario: General Brand, Lithium Polymer, 1 cell, 3.7V, 3000mah
      Charging rate: 1C (3000mV, Fast charge) or 0.5C (1500mV/regular charge).
      ^ Ensure the manufacturer approves 'fast charge' rate.
  • Maximum Charge Voltage
    A typical LiPo battery cell is fully charged when it reaches 4.2V. However, researchers have concluded that reducing the charge voltage by 0.1V can/will ‘double’ the life of a LiPo cell. We have included this feature so that you can set the maximum charge. We recommend users to set this at 4.1V for extended battery life (x2). If maximum battery performance is required (e.g racing, RC, etc), this can obviously be set at full 4.2V.
    Note: LiPo cell of 4.35V is also supported (need specialized battery cell)
  • Minimum Discharge Voltage
    This feature set the lowest voltage the LiPo battery can go. When reached everything goes in sleep-mode. This greatly eliminates the risk of having a LiPo cell getting damaged by low voltage. We recommend setting this at 3.2V. If you need to put your device/battery in storage for a long period of time, simply set to 3.7V. Unit is volt (Min: 2.5V / Max: 3.7V)

Visual Studio 2017 Source Code (C#)

Source code is made available to our customers upon request and at no extra charge. Some of the examples we currently have include:
  • Configuration GUI (App to set all of the above features/values)
  • Battery/Voltage Power Monitoring (e.g. taskbar graphical battery/ico)
  • Windows Background Service (E.g service that perform a graceful windows shutdown)
  • Input ON/OFF (5V~14V) monitoring (e.g. Charging or discharging)
  • Output ON/OFF (5V) Manual Override (to power ON/OFF devices e.g. remotely)
Attachments
01.jpg
Can be installed either side, facing back/front!
01.jpg (123.95 KiB) Viewed 5181 times
02.jpg
02.jpg (128.93 KiB) Viewed 5181 times
03.jpg
Mounting kit
03.jpg (166.28 KiB) Viewed 5181 times
04.jpg
04.jpg (127.75 KiB) Viewed 5181 times
05.jpg
05.jpg (114.83 KiB) Viewed 5181 times

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Krzysztof
Posts: 10
Joined: Mon Jan 01, 2018 7:02 pm

Wed Feb 07, 2018 10:56 pm

Hi,
This board looks realy nice. For the new pandas it should have 12V output, but this can be easily done, right.
It seems pretty flexible in the sense that the user can control many things. I like that. Being able to define the thresholds you can also use batteries with other chemistry like LiFePO, what i like even more.
It would be nice if the board had a power delivery chip at output controlling the output DC DC converter.
Do you plan some changes for Alpha and Delta? Or you want to support the first lattepanda?
Cheers
Krzysztof

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LattePanda
Site Admin
Posts: 2468
Joined: Wed Jan 20, 2016 9:09 am

Thu Feb 08, 2018 10:01 am

Hi LattePanda Developers!
We would like to announce the initial two selections for the new the new generation of LattePanda boards.
@GTC has made a truly remarkable Power Management System that has impressed all of us with its clean, concise and precision design. Its utility is also one of the factors that have convinced us of its noteworthy status. Above all, this contraption can basically be used in a wide-array of situations not limited to size or application since its related to a core-usage of the Panda. We would like to congratulate GTC on his design and selection for the initial batch of Engineering Kits. We will be getting in touch with him soon!
The second proposal came to us on email, so we will keep the identity anonymous but will tell the idea is similar to that of the PiTop. This cost effective solution will definitely empower users to pursue it as a portable solution with just one wire for power. We hope we can pursue this soon and get you all the information and accessories you can from us.
Lastly, we would like to apologize in announcing these results. Its been quite busy here with the Kickstarter campaign and getting ready for production. Second, as a note to all other contributors, this is not the final selection for all LattePanda shields or accessories. We have not ruled out any yet and we encourage you to please keep letting us know your great ideas since we will have another round of evaluations for more open source hardware! As a reminder, we will pursue this with a mind to mass-manufacture them and also sell them alongside the LattePanda itself.
Enjoy Tinkering with LattePanda ! :lol:

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Krzysztof
Posts: 10
Joined: Mon Jan 01, 2018 7:02 pm

Thu Feb 08, 2018 1:27 pm

Hi,

that is a great news! Congratulations @GTC! This solution is very good and I will then not try to reinvent the wheel and wait for your board!

cheers,
Krzysztof

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ED209
Posts: 222
Joined: Tue Apr 19, 2016 3:31 pm

Sat Feb 24, 2018 5:57 pm

Krzysztof wrote:
Thu Feb 08, 2018 1:27 pm
Hi,

that is a great news! Congratulations @GTC! This solution is very good and I will then not try to reinvent the wheel and wait for your board!

cheers,
Krzysztof
+1 perfect!

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LattePanda
Site Admin
Posts: 2468
Joined: Wed Jan 20, 2016 9:09 am

Tue Mar 06, 2018 3:11 am

@GTC I hope we can have a talk of the MiniUPS via mail, could you contact us techsupport@lattepanda.com .
Looking forward to any reply!
Enjoy Tinkering with LattePanda ! :lol:

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Krzysztof
Posts: 10
Joined: Mon Jan 01, 2018 7:02 pm

Tue Mar 06, 2018 7:10 pm

@GTC, do you plan a redesign of the original board? In one of the comments on kickstarter LattePanda mentioned that the power of about 18W provided by the QuickCharge3 is not enough for Alpha. And your board has right now only 5V at 3A max output.
Cheers
Krzysztof

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