Sharing a flyer for FTC Scrimmage on Mar 18th 2pm-5pm at Ashburn Library.
Those are looking to learn about FIRST Tech Challenge or just want to watch
4 robots battle it out, please join us.

-Dinesh Bhat
Coach - Absolute Zero

On Thu, Feb 23, 2023 at 8:21 PM Deborah Heyward <[log in to unmask]>
wrote:

> *CAUTION: *This email originated from outside of JMU. Do not click links
> or open attachments unless you recognize the sender and know the content is
> safe.
> ------------------------------
> Thanks for the info.  We finally got the firmware downgraded - we had to
> use a mac computer, since ipad, and any laptops with windows 10 or windows
> 11 would not work.
>
>
> On Wed, Feb 15, 2023 at 6:41 PM Skip Morrow <[log in to unmask]>
> wrote:
>
>> Hi Deborah!
>>
>> Downgrading can be problematic. But it is possible. Officially from Lego,
>> this seems to be the only way:
>> https://urldefense.com/v3/__https://spikelegacy.legoeducation.com/hubdowngrade/*step-1__;Iw!!N6YHze6lT7thMl0!M_XpObPJhHtQd1Va_Mhd54EIg1bmpl_WjLjjnbt3R0h0QS_UEAN_Y0xhNoNWZvtCbxZKmX-4t-lzWN0BrAejdBpHH7kTRA$ 
>> <https://urldefense.com/v3/__https://spikelegacy.legoeducation.com/hubdowngrade/*step-1__;Iw!!N6YHze6lT7thMl0!OPyEHT6gPedcM3wlu-cohtNv5-5zo_UlI5Z5uR0iONgkwJEueIeg_Fdds7K7H3FJVqY_hM2hubRN6NLKS2weyw$>
>>
>> Requires a computer with Chrome OS, or a Mac with a Chrome browser.
>>
>> I also found this:
>> https://urldefense.com/v3/__https://dfu.pybricks.com/__;!!N6YHze6lT7thMl0!M_XpObPJhHtQd1Va_Mhd54EIg1bmpl_WjLjjnbt3R0h0QS_UEAN_Y0xhNoNWZvtCbxZKmX-4t-lzWN0BrAejdBqd4R0Rgw$ 
>> <https://urldefense.com/v3/__https://dfu.pybricks.com/__;!!N6YHze6lT7thMl0!OPyEHT6gPedcM3wlu-cohtNv5-5zo_UlI5Z5uR0iONgkwJEueIeg_Fdds7K7H3FJVqY_hM2hubRN6NKgrLilGg$>
>>
>> But I am not sure it will work because pybricks is a specific OS outside
>> of Lego's official OS. I think it will work, but I am not sure. Be careful.
>>
>> I have not heard of any updates in the last week. Sorry!
>>
>> I hope this helps.
>> Skip
>>
>> On Wed, Feb 15, 2023 at 5:45 PM Deborah Heyward <
>> [log in to unmask]> wrote:
>>
>>> Thanks for this note!  We had updated before this was sent out and
>>> couldn’t figure out why things were not working.
>>>
>>> We have not been able to revert the firmware to the previous version
>>> that was used for the original Spike app.
>>>
>>> I’m curious if anyone knows how to revert back?  Or if there have been
>>> any updates on the newer app?
>>>
>>> Thank you!
>>>
>>> On Tue, Feb 7, 2023 at 2:50 PM Skip Morrow <[log in to unmask]>
>>> wrote:
>>>
>>>> *CAUTION: *This email originated from outside of JMU. Do not click
>>>> links or open attachments unless you recognize the sender and know the
>>>> content is safe.
>>>> ------------------------------
>>>> VA DC FLL Teams,
>>>> Have you had a problem with your Spike Prime Gyro? Probably you were
>>>> trying to do a gyro turn, and the robot just kept spinning and spinning? I
>>>> have heard it from several teams and online, so it is a problem that is
>>>> somewhat widely known.
>>>>
>>>> I did some troubleshooting and found that if you hold the robot while
>>>> it is booting up, almost certainly your gyro will not work. However, if you
>>>> set the robot down for at least five seconds or so, it usually fixes
>>>> itself. Here's a video I took of the problem:
>>>> https://urldefense.com/v3/__https://www.youtube.com/watch?v=wdX1fRHu_nQ__;!!N6YHze6lT7thMl0!M_XpObPJhHtQd1Va_Mhd54EIg1bmpl_WjLjjnbt3R0h0QS_UEAN_Y0xhNoNWZvtCbxZKmX-4t-lzWN0BrAejdBqfEa44cg$ 
>>>> <https://urldefense.com/v3/__https://www.youtube.com/watch?v=wdX1fRHu_nQ__;!!N6YHze6lT7thMl0!OmMud02-6Py74xBxOmQnzieK3N7yOE2Rpygm3EqvO3FiziLSTKKT7_-m36LxIKmdFRTpNdbDAvlzLNc-ZyFIrHK9Dr3mfNRAp5Hk$>
>>>>
>>>> At the beginning, I mention a previous video, which doesn't have much
>>>> to add, but if you want to see it, here's the link:
>>>> https://urldefense.com/v3/__https://www.youtube.com/watch?v=PwnMR-q4M3Q__;!!N6YHze6lT7thMl0!M_XpObPJhHtQd1Va_Mhd54EIg1bmpl_WjLjjnbt3R0h0QS_UEAN_Y0xhNoNWZvtCbxZKmX-4t-lzWN0BrAejdBqufMZJRA$ 
>>>> <https://urldefense.com/v3/__https://www.youtube.com/watch?v=PwnMR-q4M3Q__;!!N6YHze6lT7thMl0!OmMud02-6Py74xBxOmQnzieK3N7yOE2Rpygm3EqvO3FiziLSTKKT7_-m36LxIKmdFRTpNdbDAvlzLNc-ZyFIrHK9Dr3mfN-K0qS8$>
>>>>
>>>> I have notified Lego technical support, and they have been super
>>>> helpful! I'd like to share the email exchange here
>>>>
>>>> *From Lego to me:*
>>>>
>>>> Hi Skip,
>>>>
>>>> Thanks for the video and the steps leading to the gyroscope issue when
>>>> running downloaded code!
>>>>
>>>> Here's an update of where we are in the investigation. We've been able
>>>> to reproduce this issue with word block coding consistently on multiple
>>>> robots with SPIKE Legacy firmware (HubOS 4.0.0.7).
>>>>
>>>> When following the steps previously outlined, the gyroscope data does
>>>> not update. Hub yaw/pitch/roll data is stuck at 0.
>>>>
>>>> For now, the workaround is what you've pointed out in the video. Add a
>>>> wait block right after the initial program start block. A minimum of 2
>>>> second wait is needed.
>>>>
>>>> We are in the process of testing with Python and I suspect the results
>>>> will be similar to what you've already found.
>>>>
>>>> Also, interestingly, this issue is not reproducible with SPIKE App 3
>>>> firmware (HubOS 1.2.10).
>>>>
>>>> Have a bricktastic day!
>>>>
>>>>
>>>> *My Reply:*
>>>> That is Awesome! I am glad that you were able to recreate the problem.
>>>> By the way, you can also mitigate the problem by just letting the robot sit
>>>> still for a couple of seconds before running the program. You don't have to
>>>> do it with a wait block/command.
>>>>
>>>> I am a little confused with the version numbers. You mentioned HubOS
>>>> 4.0.0.7, which is what I have on my hub, and that is obviously where we are
>>>> having the issues. But then you mentioned Spike App 3 and HubOS 1.2.10. I
>>>> thought Spike App 3 was the newest version??? But the HubOS 1.2.10 was a
>>>> lower number than what I have now??? Are you saying that I should upgrade
>>>> to Spike App 3? Or downgrade my HubOS to 1.2.10? Sorry for the confusion!
>>>>
>>>>
>>>> *Their final reply:*
>>>>
>>>> Good to know about just letting the hub wait/sit still for a few
>>>> seconds before starting the program.
>>>>
>>>> Also, I'm happy to clear up any confusion with firmware numbers. Yes,
>>>> SPIKE App 3 has a lower number! It's because SPIKE App 3 has a complete
>>>> rework of the firmware. So the versioning started a new. You can think of
>>>> SPIKE Legacy and SPIKE App 3 firmware as two separate tracks.
>>>>
>>>>
>>>> As for upgrading to SPIKE App 3, for FLL teams, we recommend holding
>>>> off for now because:
>>>>
>>>> (1) No auto-conversion of SPIKE Legacy projects
>>>>
>>>> So right now SPIKE Legacy projects are not compatible with SPIKE App 3
>>>> and vice-versa. Our SPIKE app team is working on a converter for an
>>>> upcoming update in the Spring.
>>>>
>>>> (2) No Python
>>>>
>>>> A new Python API for SPIKE App 3 is being worked on. So it's not yet
>>>> ready for SPIKE App 3. It will be part of a future update.
>>>>
>>>>
>>>> *Final thoughts:*
>>>>
>>>> If you are having problems with your gyro, perhaps wait until Spring
>>>> when the new software will be released. If you really need your robots
>>>> right now, then absolutely be sure to boot the robot in a very stable
>>>> place. Or be sure to let it sit steady for a few seconds after booting.
>>>>
>>>> Also, do not update your robot to Spike App 3.x until further notice.
>>>>
>>>> Anyway, I thought this would be helpful to some teams.
>>>>
>>>> And have a Bricktastic Day!
>>>>
>>>> Skip Morrow
>>>>
>>>> Coach 24277
>>>>
>>>> Norfolk Collegiate O.A.K.S.
>>>> ------------------------------
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>>> --
>>> Enjoy each moment!
>>>
>>> Deborah Heyward
>>> [log in to unmask]
>>>
>> ------------------------------
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