Breaking News
Comments
Newest First | Oldest First | Threaded View
Dixy3
User Rank
Author
re: Chips in Space: Let’s look inside ARISSat-1 (Part 3)
Dixy3   9/1/2011 5:35:27 PM
NO RATINGS
Hi again Steve, Thanks for the excellent 3 part article, I have saved mine to disc for future reference but just wanted to say thanks for the great effort you and the team went too to create and launch the satellite, I hope she continues to give many people lots of enjoyment and the interesting data goes into the next project to help many more satellites big and small come through to future flights too. Just wish ITAR would ease up on all our AMSAT satellites and us all working together again as one International team. Best regards from us all over here, Chris GW6KZZ.

Steve Bible
User Rank
Author
re: Chips in Space: Let’s look inside ARISSat-1 (Part 3)
Steve Bible   8/31/2011 2:18:09 AM
NO RATINGS
Hi R.D., Thanks! We followed good engineering practices. Soldering was all by hand under a stereo microscope paying particular attention to make good solder joints. Components are industrial grade. The only component space rated was the solar panels. No paints or glues that out-gassed. I do plan a lessons learned blog or two or three. Stay tuned!

Robotics Developer
User Rank
Author
re: Chips in Space: Let’s look inside ARISSat-1 (Part 3)
Robotics Developer   8/29/2011 4:09:57 PM
NO RATINGS
Thanks for a nice series of articles! I was wondering what if any special fabrication methods were used to accommodate the space environment? In particular, type of soldering used for the PCBs, type of components (industrial, commercial, or de-rated use of these?). Would you be posting a lessons learned article as some point in the future?

Steve Bible
User Rank
Author
re: Chips in Space: Let’s look inside ARISSat-1 (Part 3)
Steve Bible   8/29/2011 3:24:50 AM
NO RATINGS
I was giving an update from previous blog posts. In summary, the battery was given to us. It is the same one used in the Russian Orlan space suit. The chemistry was Silver-Zinc, which was designed for high reliability - naturally for the suit - and not for longevity. We thought if we shallow charged it, it would last longer. Alas, it only lasted 8 days. So for the rest of ARISSat-1's operating lifetime, it will only operate in the Sun. I hope this helps explain the update and the battery choice. We will be thinking about alternative battery choices in the future. But we did learn from this mission.

kjdsfkjdshfkdshfvc
User Rank
Author
re: Chips in Space: Let’s look inside ARISSat-1 (Part 3)
kjdsfkjdshfkdshfvc   8/28/2011 8:36:29 PM
NO RATINGS
I meant "added costs" not "added caps" in that last post. Thanks!

kjdsfkjdshfkdshfvc
User Rank
Author
re: Chips in Space: Let’s look inside ARISSat-1 (Part 3)
kjdsfkjdshfkdshfvc   8/28/2011 8:34:34 PM
NO RATINGS
I was curious as to why you said the battery was dead and when the solar panels are eclipsed, the system resets. Why were rechargeable batteries or ultracaps not used to hold the system over? Added caps? The interrupted time was just not important? Just curious about that design choice :)



Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Radio
LATEST ARCHIVED BROADCAST

What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.

Brought to you by:

Like Us on Facebook
Special Video Section
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27
The LT8602 has two high voltage buck regulators with an ...
05:18
Silego Technology’s highly versatile Mixed-signal GreenPAK ...
The quality and reliability of Mill-Max's two-piece ...
01:34
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...
Vincent Ching, applications engineer at Avago Technologies, ...