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Raspberry Pi HATS compatible UPS – part IIa – trickle charger | AWJ Logan
https://awjlogan.wordpress.com/2014/08/16/raspberry-pi-hats-compatible-ups-part-iia-trickle-charger
Gus Logan's Projects. Raspberry Pi HATS compatible UPS part IIa – trickle charger. August 16, 2014. Following on from part I. And a little discussion on the Raspberry Pi forums. Here is part IIa, in which I’ll go through and explain and calculate the values and also the reasoning behind each part for the trickle charger. This was going to be for the whole board, but ended up being very long so bitesize chunks for both me and anyone reading! 55 mA trickle charger. CCS) (LED1, R2, R3, Q1) driving a. 25 C),...
awjlogan.wordpress.com
Raspberry Pi HATS compatible UPS – part IIc – switching supply and EEPROM | AWJ Logan
https://awjlogan.wordpress.com/2014/09/08/raspberry-pi-hats-compatible-ups-part-iic-power-and-miscellaneous-parts
Gus Logan's Projects. Raspberry Pi HATS compatible UPS part IIc switching supply and EEPROM. September 8, 2014. Following on from parts IIa. Be the final part about the actual electronic design. All that’s left to cover is the. For HATS compatibility. Luckily, these are actually both just stock designs. In the same way that software can (and often should) be written with libraries, these are essentially copied designs. I’ll cover the basic parts of the regulator first, then the EEPROM. Chip as it comes i...
awjlogan.wordpress.com
Raspberry Pi HATS compatible UPS – part IIb – status indication | AWJ Logan
https://awjlogan.wordpress.com/2014/08/23/raspberry-pi-hats-compatible-ups-part-iib-status-indication
Gus Logan's Projects. Raspberry Pi HATS compatible UPS part IIb status indication. August 23, 2014. The explanation of the trickle charger portion. Was a lot longer than I’d anticipated, and I hope it was clear. With that in mind, I’m going to dive straight into the development of the second main portion of the UPS board. IC2, forms the core of this part of the circuit. Power supply and reference:. Without further ado, the values were calculated using the following procedure:. And the shunt current.
blog.softwaresafety.net
Software Safety: July 2014
http://blog.softwaresafety.net/2014_07_01_archive.html
Software Safety .Net, http:/ www.softwaresafety.net , is a clearing house for items related to Software Safety, particularly in the Embedded Systems and hardware design realms. Tuesday, July 1, 2014. Real Time Cyber Attack Map. 'War Games' comes to life. If you wonder why your Internet has been getting slower and slower, it is due to the escalating Cyber War going on. To showcase their technology, now lets us watch the war in real time, just like at the end of the movie War Games:. Shows (for a fee) what...
blog.softwaresafety.net
Software Safety: Tech Companies Say Better to Import More Workers Than Retrain Experienced Ones
http://blog.softwaresafety.net/2014/03/tech-companies-say-better-to-import.html
Software Safety .Net, http:/ www.softwaresafety.net , is a clearing house for items related to Software Safety, particularly in the Embedded Systems and hardware design realms. Sunday, March 23, 2014. Tech Companies Say Better to Import More Workers Than Retrain Experienced Ones. WASHINGTON, March 19,2014 /PRNewswire-USNewswire/ - Addressing a media conference call today, Scott Corley, executive director of Compete America. You'd Rather Import Than Retrain. Why? People wonder why the younger generation h...
blog.softwaresafety.net
Software Safety: Solving pressure and condensation build up in your Embedded System.
http://blog.softwaresafety.net/2015/03/solving-pressure-and-condensation-build.html
Software Safety .Net, http:/ www.softwaresafety.net , is a clearing house for items related to Software Safety, particularly in the Embedded Systems and hardware design realms. Sunday, March 1, 2015. Solving pressure and condensation build up in your Embedded System. Have you ever had a problem with pressure build up or condensation in one of your embedded devices? Are a good solution today, but I thought you might find The Rest Of The Story. I'd put them in a sealed box, with a Gore-Tex Vent so that the.
blog.softwaresafety.net
Software Safety: April 2015
http://blog.softwaresafety.net/2015_04_01_archive.html
Software Safety .Net, http:/ www.softwaresafety.net , is a clearing house for items related to Software Safety, particularly in the Embedded Systems and hardware design realms. Sunday, April 12, 2015. Richard Stallman Coming to Northeast Ohio Oct 17th. Of the Free Software Foundation (FSF). Will be speaking Saturday October 17th 2015 at the Kiva Auditorium of Kent State University. The Free Software Foundation (FSF). Stallman is frequently mistaken as a supporter of Open Source. Saturday, October 17, 2015.
blog.softwaresafety.net
Software Safety: March 2014
http://blog.softwaresafety.net/2014_03_01_archive.html
Software Safety .Net, http:/ www.softwaresafety.net , is a clearing house for items related to Software Safety, particularly in the Embedded Systems and hardware design realms. Sunday, March 23, 2014. US Aims To Give Up Control Over Internet Administration. Http:/ www.ntia.doc.gov/press-release/2014/ntia-announces-intent-transition-key-internet-domain-name-functions. While the US Government clearly has issues, do you think other countries will be as supportive of any open system like Internet is today?
blog.softwaresafety.net
Software Safety: September 2013
http://blog.softwaresafety.net/2013_09_01_archive.html
Software Safety .Net, http:/ www.softwaresafety.net , is a clearing house for items related to Software Safety, particularly in the Embedded Systems and hardware design realms. Saturday, September 28, 2013. Introduction to Physiotronics [TM]. This week I spent a bit of time with Dr. J. C. Chiao. Of University of Texas at Arlington. Learning about the field of Physiotronics [TM], which covers the area of Implantable Wireless Medical Devices and Systems. Via communication between neurons ( Nociceptors.
blog.softwaresafety.net
Software Safety: February 2015
http://blog.softwaresafety.net/2015_02_01_archive.html
Software Safety .Net, http:/ www.softwaresafety.net , is a clearing house for items related to Software Safety, particularly in the Embedded Systems and hardware design realms. Saturday, February 28, 2015. Is there a rule of thumb for estimating the cost of getting circuit boards assembled? A reoccurring theme I see on message boards is why does it cost so much to have some electronic widgets manufactured. Here is some background for you that might help explain that. Is helpful for the discussion. Includ...
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