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by Elfen
Mon Nov 19, 2018 5:59 pm
Forum: Staffroom, classroom and projects
Topic: help a preschool teacher out!
Replies: 3
Views: 5131

Re: help a preschool teacher out!

I just love how everybody goes to "Oh, just buy the new Raspberry Pi! It's only $35!" Teachers are limited in what they can do, including getting "new" equipment (especially here in the USA). And "buying a new R-Pi" does not solve the problem: Slow and crashing. This sounds like either SD Card Corru...
by Elfen
Mon Nov 19, 2018 5:27 pm
Forum: Astro Pi
Topic: Sourcing Astro Pi parts from USA-based websites/stores
Replies: 17
Views: 11755

Re: Sourcing Astro Pi parts from USA-based websites/stores

I got about 95% of all the parts I needed for my Astro Pi at Tinkersphere. It's a tiny DIY/Hobbyist store in NYC and they do mail order if you can't get there in person. You should verify if the items are in stock however. https://tinkersphere.com I say 95%, because a couple of things they do not ha...
by Elfen
Tue Oct 31, 2017 6:16 pm
Forum: Python
Topic: Output repeating itself, why?
Replies: 6
Views: 1184

Re: Output repeating itself, why?

Many many thanks!

When I get the time to modify and try out the code, I will post up the results here. :mrgreen:

Spending time with the kids and the high holy dazes (All Hollow's Eve -> Day of the Dead - 4 days of fun!) is going to bit a chunk out of my free time. :D
by Elfen
Sun Oct 29, 2017 8:35 pm
Forum: Python
Topic: Output repeating itself, why?
Replies: 6
Views: 1184

Re: Output repeating itself, why?

while running: for event in pygame.event.get(): if event.type == pygame.QUIT: running = False if event.type == KEYDOWN: if event.key == K_ESCAPE: running = False handle_event(event, WHITE) if event.type == KEYUP: handle_event(event, BLACK) I've looked over the code and figured out that "event.type"...
by Elfen
Tue Oct 24, 2017 8:48 pm
Forum: Astro Pi
Topic: Sense HAT What is I2C and do I need to enable?
Replies: 15
Views: 5045

Re: Sense HAT What is I2C and do I need to enable?

I believe though the 3 sensors just run over the standard connection on the I2C bus, not via the Atmel AVR Attiny88 which controls the LEDs and Joystick. and yes you can modify it if you want. ...One minute https://www.raspberrypi.org/blog/buy-the-sense-hat-as-seen-in-space/ Interesting to know. I ...
by Elfen
Tue Oct 24, 2017 8:25 pm
Forum: Astro Pi
Topic: Using an R-Pi 3 in the AstroPi (Confirmed Observation)
Replies: 4
Views: 2134

Re: Using an R-Pi 3 in the AstroPi (Confirmed Observation)

timrowledge, I would love a machined metal case but being a retired teacher in the USA forces me to live on a limited income. I think it is a great product, I just can not afford it. I am trying to start a R-Pi program here in the states in New York City, NY., and hope to have it up and running by 2...
by Elfen
Tue Oct 24, 2017 5:04 am
Forum: Astro Pi
Topic: Sense HAT What is I2C and do I need to enable?
Replies: 15
Views: 5045

Re: Sense HAT What is I2C and do I need to enable?

Somewhere I read that the Sense Hat has an Amtel Tiny88 Micro controller in it. I maybe wrong but that is what I read and it would answer many questions about IC2. It would make reading the sensors easier to read without tying up resources on the Raspberry Pi. Tying up resources will slow down a Pi....
by Elfen
Tue Oct 24, 2017 4:42 am
Forum: Python
Topic: Output repeating itself, why?
Replies: 6
Views: 1184

Re: Output repeating itself, why?

Hi. I have never used pygame so I may be wrong, ignore me if I am. :lol: So looking at this bit of your code while running: for event in pygame.event.get(): if event.type == pygame.QUIT: running = False if event.type == KEYDOWN: if event.key == K_ESCAPE: running = False handle_event(event, WHITE) i...
by Elfen
Mon Oct 23, 2017 6:48 pm
Forum: Astro Pi
Topic: Sense HAT pressure readings
Replies: 5
Views: 4148

Re: Sense HAT pressure readings

This seems correct to me. Your Sense_Hat is reading the air pressure where you are at; the weather station where your weather station is located is not where you are at and there will be some slight differences. Here in New York City (Manhattan), the weather below 59th Street can be entirely differe...
by Elfen
Mon Oct 23, 2017 6:26 pm
Forum: Python
Topic: Output repeating itself, why?
Replies: 6
Views: 1184

Output repeating itself, why?

I built an Astro Pi and created a simple environmental program to sense temperature, humidity and air pressure when certain buttons are pressed. I took the pygame.py and scrolling_env.py programs and put them together to get something to work. After some tweaking and conversions (since I'm in Americ...
by Elfen
Mon Oct 23, 2017 6:04 pm
Forum: Astro Pi
Topic: Using an R-Pi 3 in the AstroPi (Confirmed Observation)
Replies: 4
Views: 2134

Using an R-Pi 3 in the AstroPi (Confirmed Observation)

I read somewhere that the R-Pi 2 and R-Pi 3 are not used because of the heat they generate, they would not pass ESA standards for operating temperature. In reading this, I have set in my mind that the heat generated by these R-Pi units would interfere with the Sense_Hat sensors. After building my As...
by Elfen
Mon Oct 23, 2017 5:48 pm
Forum: Astro Pi
Topic: How will GPIOZero Effect Astro Pi Programming?
Replies: 5
Views: 1961

Re: How will GPIOZero Effect Astro Pi Programming?

Interesting Davespice... I'm using the last version of Jessie for my AstroPi, which according to the docs I find says that GPIOZero is part of the Library, thus my concern and query about GPIOZero and the AstroPi GPIO Buttons. Thus far I have not used GPIOZero Statements in my program and it seems t...
by Elfen
Sat Oct 21, 2017 9:05 pm
Forum: High Altitude Balloon
Topic: Hobby Rockets - Where to find accurate sensors and How to transfer data?
Replies: 19
Views: 15204

Re: Hobby Rockets - Where to find accurate sensors and How to transfer data?

For something small and lightweight, I would recommend the Pimoroni's Enviro pHat sensor board for the R-Pi. It's the same size as the R-Pi Zero/Zero W and has more or less the same sensors as the R-Pi Sense Hat but without the LED Array and joystick. and its about 1/2 the price of the Sense Hat, de...
by Elfen
Sat Oct 21, 2017 8:55 pm
Forum: Astro Pi
Topic: How will GPIOZero Effect Astro Pi Programming?
Replies: 5
Views: 1961

How will GPIOZero Effect Astro Pi Programming?

Having built one, I'm just rather confused on accessing the GPIO buttons. And now that the last Jessie and new Scratch has GPIO Zero, how will that change how the buttons and the rest of the Sense hat be accessed? I'm trying to write a simple program that when one of the buttons are pressed, it acce...
by Elfen
Fri Aug 18, 2017 11:13 pm
Forum: Beginners
Topic: LCD display for all Pis
Replies: 8
Views: 1872

Re: LCD display for all Pis

Though there are many LCD Screens that plug into the GPIO, not all the pins are used. Only Power, Ground and a few pins are used to drive the LCD, the majority of the others are not used. Only thing I can say is find a simple one like W. H. Heydt mentions. I would recommend either a 3.5 or 5 inch sc...
by Elfen
Fri Aug 18, 2017 11:00 pm
Forum: Troubleshooting
Topic: raspberry pi only showing red light
Replies: 2
Views: 1990

Re: raspberry pi only showing red light

I agree with Mahjaongg... How old is your Pi, or better yet, how many USB Ports does it have? This could be could be many things: SD Card going bad, SD Card slot getting loose, not enough power from your power pack (Must be 5V @ 1.5Amp; 2Amp is better!), system file going corrupt on the SD Card, so ...
by Elfen
Fri Aug 18, 2017 10:47 pm
Forum: Troubleshooting
Topic: Odd Fishy Smell Coming From Pies?
Replies: 3
Views: 832

Re: Odd Fishy Smell Coming From Pies?

Interesting. Good to know. Many thanks. In your opinion, washing the affected Pies in a 80%/20% solution of high proof alcohol / acetone would eliminate the smell? Washing old PC Boards with this solution eliminates old flux and other reside. But the traces on the Pies are so small... I will have to...
by Elfen
Fri Aug 18, 2017 3:47 am
Forum: Troubleshooting
Topic: Odd Fishy Smell Coming From Pies?
Replies: 3
Views: 832

Odd Fishy Smell Coming From Pies?

In some circles like the Old Computer Repair Groups, a fishy smell means that the electrolytic capacitors have failed and leaked their electrolyte fluid. Thus one has to wash the board and replace the capacitors. Most use Solid state caps for this, as have I with a few of my old Macs I have recapped...
by Elfen
Fri Jun 23, 2017 7:45 pm
Forum: Other projects
Topic: The Pi Zero Case?
Replies: 3
Views: 1653

The Pi Zero Case?

I recently got A R-Pi Zero Case (from Micro Center) and like it a lot. It has a lot going for it but I have 1 major complaint for it. It comes with 1 Tub where they R-Pi 0 fits into and 3 tops. This is interesting and at the same time wasteful. When you use one top, there is no other tubs for the ot...
by Elfen
Fri Jun 23, 2017 7:36 pm
Forum: Astro Pi
Topic: American "astro Pi"
Replies: 6
Views: 7102

Re: American Pi

I'm throwing my hat into this Ring, and am building my first Astro Pi (waiting for an friend to 3D print a case for me). But here in NYC, there is very little in the R-Pi and Maker education, and the Astro Pi with NASA would be beneficial for us here. Anything i can do, ask and lets see if I can do ...
by Elfen
Fri Jun 23, 2017 7:29 pm
Forum: Camera board
Topic: Pi Zero Case - Camera cover
Replies: 2
Views: 840

Re: Pi Zero Case - Camera cover

I recently got an "Official" Pi Cam, the older 5MP camera (Rev 1.3), not the newer 8MP Camera, to go with my R-Pi Zero and Astro Pi (waiting for a friend to 3D print the case for me). I got the official Pi-Zero case for it, and I had some difficultly in installing it. I found that there is two side ...
by Elfen
Wed Sep 14, 2016 6:27 pm
Forum: General discussion
Topic: CM3 for hobbyists
Replies: 33
Views: 4999

Re: CM3 for hobbyists

Actually, it's *more* expensive because the PCB is more complex, since it brings out every interface the SoC has. While the CM is discounted by at least one supplier now, the list price is $40. The dev kit (CM, dev carrier board, camera and display adapters) was originally $200, that has been at $1...
by Elfen
Wed Sep 14, 2016 6:19 pm
Forum: General discussion
Topic: Model A+ memory boost
Replies: 44
Views: 6723

Re: Model A+ memory boost

Thread necromancy allowed? Oh well... My biggest "beef" on this is the price. Will the A+512 remain in the $20 range or will it be as costly as the B+ series? As I seen so far, the A+512 is going for as much as a B+ (not the 2 or 3) and that is not good for me anyways. The Model A+512 is a good "in ...
by Elfen
Wed Sep 14, 2016 6:07 pm
Forum: General discussion
Topic: Raspberry Model A+ Upgraded to 512MB?
Replies: 3
Views: 889

Re: Raspberry Model A+ Upgraded to 512MB?

Thanks.
by Elfen
Wed Sep 14, 2016 5:54 pm
Forum: General discussion
Topic: Raspberry Model A+ Upgraded to 512MB?
Replies: 3
Views: 889

Raspberry Model A+ Upgraded to 512MB?

Found this on the Bang Good (seller) website - a 512MB Model A+ R-Pi. As much as I try to keep up with the R-Pi I never seen any notice of this. Question is, is this an Actual Real R-Pi Model A+ with 512MB, a modded/hacked version done by them, or a major misprint? I Like the Model A+ as it is at/ar...

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