SolitaryDragon
Posts: 4
Joined: Mon Jul 15, 2019 9:32 am

Why does Astro Pi on the space station need six buttons?

Mon Jul 15, 2019 10:04 am

Sense HAT has only a five-button joystick.And Sense HAT API reference also indicate it is only the up/down/left/right/middle.There's also an Any state.
But in addition to u/d/l/r, there are also A and B on the shell of AstorPi.A and B are middle?If one of them is middle and the other one is any.This is absurd.I don't get answers in many PDF documents.I need help.
Another question, AstorPi's camera is at the bottom, so what does the top hole do on joystick's right and AB buttons left?
My budget is very limited and I need to understand the composition of AstorPi to save money.Looking forward to your answers.Thank you very much!
My mother tongue is not English. Please forgive the grammatical mistakes in this passage
($(VVV~HG[SE731NKG8LI9K.png
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DougieLawson
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Re: Why does Astro Pi on the space station need six buttons?

Mon Jul 15, 2019 2:07 pm

https://www.raspberrypi.org/blog/astro-pi-flight-case/
https://www.nasa.gov/mission_pages/stat ... l?#id=7534

Looks like two press buttons (labelled 'A' & 'B') - they're not on the schematic @ https://www.raspberrypi.org/documentati ... T-V1_0.pdf
so were likely added for NASA to allow the ISS crew some extra control (stop/go buttons?).

The hole is to allow cabin air to reach the temp and humidity sensors.
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SolitaryDragon
Posts: 4
Joined: Mon Jul 15, 2019 9:32 am

Re: Why does Astro Pi on the space station need six buttons?

Mon Jul 15, 2019 3:55 pm

DougieLawson wrote:
Mon Jul 15, 2019 2:07 pm
https://www.raspberrypi.org/blog/astro-pi-flight-case/
https://www.nasa.gov/mission_pages/stat ... l?#id=7534

Looks like two press buttons (labelled 'A' & 'B') - they're not on the schematic @ https://www.raspberrypi.org/documentati ... T-V1_0.pdf
so were likely added for NASA to allow the ISS crew some extra control (stop/go buttons?).

The hole is to allow cabin air to reach the temp and humidity sensors.
Dear. DougieLawson, Thank you for your help! I really appreciate it.
For the NASA web page, is it to show me the real thing?
Sense Hat has been on the market for years, and if I buy it recently, will it be replaced by a second generation product soon?

SolitaryDragon
Posts: 4
Joined: Mon Jul 15, 2019 9:32 am

Re: Why does Astro Pi on the space station need six buttons?

Mon Jul 15, 2019 4:50 pm

I found another page about the button representation. According to this description, button A or B may be used to synchronize the clock.

https://projects.raspberrypi.org/en/pro ... ht-case/10
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Andyroo
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Location: Lincs U.K.

Re: Why does Astro Pi on the space station need six buttons?

Mon Jul 15, 2019 6:10 pm

SolitaryDragon wrote:
Mon Jul 15, 2019 3:55 pm
...
Sense Hat has been on the market for years, and if I buy it recently, will it be replaced by a second generation product soon?
No one knows - it is standard operating procedure that the future is never told till it arrives :lol: Mr Upton is allowed to break this rule a little but the engineers will not be bribed (even with tea and cakes).

You may find this site of interest though https://www.bc-robotics.com/2017/07/20/ ... ropi-case/ as they have a similar RTC board and links to a case with A/B buttons...
Need Pi spray - these things are breeding in my house...

SolitaryDragon
Posts: 4
Joined: Mon Jul 15, 2019 9:32 am

Re: Why does Astro Pi on the space station need six buttons?

Wed Jul 17, 2019 11:51 am

Andyroo wrote:
Mon Jul 15, 2019 6:10 pm
SolitaryDragon wrote:
Mon Jul 15, 2019 3:55 pm
...
Sense Hat has been on the market for years, and if I buy it recently, will it be replaced by a second generation product soon?
No one knows - it is standard operating procedure that the future is never told till it arrives :lol: Mr Upton is allowed to break this rule a little but the engineers will not be bribed (even with tea and cakes).

You may find this site of interest though https://www.bc-robotics.com/2017/07/20/ ... ropi-case/ as they have a similar RTC board and links to a case with A/B buttons...

Thank you very much for your help. This project looks cool.But unfortunately its price is beyond my budget, but I also like it!: P

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