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           A while back I started a list of abbreviations and acronyms that were being used in the questions and discussions on the E-14 web site. Since I often found myself not able to understand the context of the sentence until I googled the particular sequence of letters I felt that others might be having the same problem. My initial list was entered in the forum a couple months ago and has been viewed over 2000 times. I promised in the initial publication that I would update the list on the forum from time to time. Here is the updated list at this time. If anyone has suggestions for additional entries or if I have gotten any of the below listed wrong please let me know.                  

     

    I have attached an Xcel .xlsx file for the list below in case you want to save it and make your own up dates.

     

     

    John

     

    This post was updated 6/9/16 JCW

     

     

    8/20/2017

    I have attached the latest list of Electronic Initialisms and Acronyms for those who are interested. There are about 750 entries in the list at this time.

    John


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    Hi Guys !

     

    I have 4 door sensors with an arduino to have a simple sound trigger but also calculated how much peoples are getting by (helping a small museum in town).  I'll skip the details but the thing is I need to make theses connected to DC to avoid batteries changes (staff too busy). I figure the simple way to do it is using the arduino voltage out to the sensors.

     

    I find this simple question complicated becuz I wonder if the current drain from the arduino will be enough for 4 sensors, so does capacitor might do the trick or if this is not the way to do it, I wonder if the AMP from the power supply should be higher ?

     

    My calculation are that each sensor need 2x 1.5 volt batteries so it's approx. 3 volt @ 500mA

    But I've tried the arduino output and 3.3volt does the trick, very good with one device.

     

    Here a quick diagram of the setup.

    If there is an expert in the room, stand up !

     

    thank for your support

    Element 14 is GREAT !!


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    Submit a Project Entry!

    Monthly Design Competitions, chance to earn prizes, decide project themes, your ideas, your projects, turn ideas into projects.

    Back to The Project14 homepage

    About Project14
    Monthly Theme
    Monthly Theme Poll

     

    Discuss Your Project Ideas in the Comments Below!

     

    Three First Place Winners Earn a Shopping Cart of $100 (from element14 sites)!

     

    This month's theme is from dougw and is for Solar Powered Yard Gadgets (tiebreaker) - an ornament, weather sensor, intruder detector, smart doorbell, car parking assistant, swing set activity counter, pool toy, electronic fence, etc.

     

    After the Monthly Poll to Decide August 2017 Project Competitionended in a tie between Solar Powered Yard Gadget and The Fourth Dimension (anything that uses or alters timing) the winner of this month's project competition was decided in favor of solar powered yard gadget after dougw expressed an interest in a yard project to coincide with the summer month's, assured balearicdynamicsthat living on the beach counts as a yard, jomoenginer suggested a solar power Yard/Beach Gnome or objects that come to life after dark (certainly fits the theme), jack.chaney56 suggested doing a time lapse of the solar eclipse (also fits the theme), and ninjatrent concurred that this was a great idea with images as well as ideas of his own on how the community should approach the solar eclipse.

     

    This themes focuses on solar power to create gadgets for the yard, and the world would be better place with more yard gadgets that use the sun as a seemingly inexhaustible (billions of years) source of energy. Among the many benefits of using solar power is the fact that it saves money while providing energy reliability, energy security, and energy independence. The sun doesn't shine 24/7 but that's hardly a drawback.  In theory, with proper storage, you could theoretically use solar power to provide for all of the world's electricity needs.  Solar easily dwarfs all potential energy sources combined and an electronics project that makes use of it, is well awesome!

     

    Looking through some past projects in the community, it was a little surprising that there weren't more projects involving solar power. Perhaps, there are some great projects buried in comments.  I know I've come across quite a few in comments for Ben Heck giveaways.   That's OK, perhaps an organized project competition is exactly what was needed to draw most of these out into an organized archive of projects!

     

    Here are some examples of Solar Powered Yard Gadgets to Inspire you:

     

    Chicken Coop Livestream

     

    IMG_4825.JPG

    The featured example for this month comes from the recent Going Green project competition from Project14. fvancreated a solar powered video streamer for his chicken coop as a weekend project. For this project he used a Pi Zero with Pi NoIR and a set of IR LEDs that can be enabled/disabled on demand. An external wifi dongle ensures connectivity from the back of the garden.  The combination of a solar panel and battery pack allows the circuit to remain powered and automatically charge during the day. As fvan tells our own e14phil who was looking to monitor the hedgehog house in his parent's backyard,  power consumption of the Pi is 140mA while idle, 250mA while streaming.  He also discusses the charge from the battery pack storage. View the blog post and read the comments to learn more!

     

     

    Solar Garden Light

     

    circuit.JPG

    jc2048was visiting a store in the UK when a couple of solar lights caught his attention. He disassembled the light and took photos of it to post on the community. According tojc2048 the battery is a 1.2V Ni-MH cell.  Because the cell voltage was very low he stuck it on a window sill for a day to soak up sun. By evening it was charged with a terminal voltage (off load) of around 1.3V. Getting 1.32V up to the 3V required to power the LED requires a switching circuit and a choke (coil). Pictured above you can see the schematic he drew. In his blog post he shares images of the waveforms and roughly calculates the coil value from the waveforms. In the comments section jw0752 some really cool images of two styles of solar circuits!

     

    The Clear Walk System

     

    ElevationMechanics.jpg

     

    dougwgrand prize winner Design Challenges for the Make Life Accessible is thoughtful, creative, and amazing (everything you would expect in a project from dougw )! The Clear Walk system is also the "Main Deflector" of his Pi IoT project, Star Trek IoT Alcove.  Fellow Trekkie and element14's  danzimahighlighted this project in his Star Wars vs Star Trek  project roundup in support of the Geeky Gadgets competition from Project14dougwbrought attention to the fact that nearly half of all injury-related deaths for seniors in Canada are caused by falls, seniors are Canada's fastest growing population, and the combined social and health cost of falls on stairs alone has been estimated at $8.8 billion a year.  His solution was to make a solar powered machine that uses solar power to melt snow and ice on walkways and steps, even when the air temperature is well below the freezing point of water. You can see the finished project in his Make Life Accessible - Clear Walk - Melting Snow - blog 19 post.

     

    Modular Farm Blog: Post 9 - Solar Energy Part I

     

    image07.png

    jmbranco76won the grand prize in the Vertical Farming design challenge in his  Modular Farm project. His completed project was able to generate and store energy locally using a solar panel, a battery pack and auxiliary hardware modules (MPPT and BMS). All system modules were designed for energy efficiency.  A nutrient dispenser made use of gravitational force to control the amount of nutrients in the tank. Magnetic sensors and solenoid valves made it possible to build reliable and precise systems with minimal energy input. The project is definitely worth checking out in its entirety and demonstrates outside the box thinking such as a Vision System with artificial intelligence.  It's not so much a yard gadget but its worth checking out to see what's possible.

     

    BitScope Blade Uno Raspberry Pi Weather Station Project in Nepal

    GF10B-weather-station-one-bitscope-blade.jpg

     

    Following the exclusive launch of the BitScope product range at element14 a team led by Prabesh Sapkota and Binod Kandel from the Robotics Association of Nepal built a battery backed solar powered weather station using a BitScope Blade Uno, Raspberry Pi, and Arduino. The project is the end of result of series of STEM workshops led by Australian educator Michelle Jensen in 2016 and run with help from Nepalese enthusiasts.  The Weather Station Project  Weather Station Project demonstrates how you can use low cost electronics components to power electronics and computers in remote areas without access to reliable energy.

     

    Watch the Ben Heck Team do a project revolving around solar power and energy efficiency:

     

     

     

    TI Launchpad Plant Booster Episode

     

    Directions:

    Step 1:Log inorregisteron element14, it's easy and free.

    Step 2:Post in the comments section below to begin a discussion on your idea.Videos, pictures and text are all welcomed forms of submission.

    Step 3:Submit a blog post of your progress on your project by the end of the month.  You are free to submit as many blog entries as you like until the beginning of the next theme.

     

    You have until October 14th, 12:00 AM CDT to submit your completed project!

     

    Be sure to include video proof of your project!

     

    What's kind of Solar Powered Yard Gadget are you thinking about doing?

     

    Let us know in the comments below!


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    battery-gaoliu-624x735.jpg

    A team of researchers at Berkeley Labs have discovered a seaweed derivative can stabilize lithium-sulfur batteries. The seaweed derivative acts a binding agent for the sulfur (Photo via Berkley Lab)

     

    Our search for the most reliable battery never seems to end. While lithium-sulfur batteries are best for powering gadgets, vehicles, and application grids, their biggest drawback is its lifespan ─ Sulfur dissolves making the batteries unreliable. But a team from the Department of Energy’s Lawrence Berkley National Laboratory believes they may have stumbled on a solution to extend their lifespan and it involves seaweed.

     

    The team, led by Gao Liu, discovered that carrageenan, a derivative of red seaweed, can stabilize a lithium-sulfur battery and make it more useful for a wider variety of devices. The improved stability means a better lifespan and more cycling. The seaweed derivative acts like a glue or binder, which holds the active materials in a battery cell together. It reacts with the sulfur and keeps it from dissolving.

     

    To help with the discovery, the team used Berkley Lab’s Advanced Light Source, one of the world’s brightest sources of ultraviolet and soft x-ray beams. They detected and studied the sulfur with the help of this powerful light monitoring the “electrochemistry simultaneously while the battery is charging.” When they saw the sulfur wasn’t moving, they knew they found something promising.

     

    The benefits of longer lasting batteries are endless, but the team sees it most useful for transportation. Because lithium-sulfur is lighter than lithium-ion, it’s better for drones and other electric aircraft. They could also prove to be useful in airplanes and electric cars. Since one of Berkeley Lab’s partners is GM, we can only guess they’ll be eager to take advantage of the latest discovery. Not to mention it’s cheaper to produce since sulfur is inexpensive.

     

    But don’t get too excited; chances are we won’t be seeing these batteries for a while. It’s still early in the process, and there’s a lot the team needs to learn. Their next steps include learning more about how the derivative interacts with sulfur and figuring out whether or not it’s reversible. The team feels like once they’ve passed this hurdle, they can use the knowledge to further improve lithium-sulfur batteries. They’ve actually been reaching these batteries for several years and published a paper regarding what they’ve found last year in Nano Letters.

     

    Have a story tip? Message me at: cabe(at)element14(dot)com

    http://twitter.com/Cabe_Atwell


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  • 10/12/10--08:00: Roland D50 hacking time
  • What does an engineer do to a perfectly working bit of gear…. Let’s mod it!.

    Now the fun will begin. The keyboard has a port for a data cartridge, this cartridge which holds program patches can either be a fixed ROM version or a RAM version with onboard battery backup. Both of these types are obsolete and expensive on the second hand market. It is time to build a ‘Mega- Ram’ version with at least 1 meg of RAM and bank switching facilities. Or even an SD card version.

     

    I need to get hold of an old data cartridge as the connector looks to be non standard.  Although I have the schematic for the D50, I do not have the schematic for the cartridges. It can’t be too difficult though, 16 address lines, 8 data lines and a few control lines.

     

    I have not used an SD card when its not being used in a multimedia product environment. So a copy of the protocol would be handy.

    In the meantime here is a copy of the service notes and an extract of the section in question

     

    memory details.jpg


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    I didn't think ahead for a way to take a proper image of the eclipse.

     

    Did you take one? And how did capture that image?

     

    C


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  • 08/12/17--17:29: Inappropriate User
  • I'm fairly sure this user is not acting within the best interests of the site.

    Sadly this is the only way to flag a user.

     

     

    redactedyoue14

     

     

    Cheers

    Mark


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    So I have been asked to install a bunch of LED's into a friends fight stick as he knows nothing about them whilst I have a little experience with them. I have used WS2812B's as a backlight for my TV and used a HM-10 for it so i could make an app for it.

    I wanted to reuse the app I made as it would mean cutting down the coding process, but I can't get my head around how I would control multiple sets of the strips. I would daisy chain each strip together via the DIN and DO, but when I put this in practice it just lights up the whole strip with whatever I set the first strip to. I believe maybe defining the individual strips would work ( # define LED_STRIP_A)

    and then defining how many led are in that strips and applying the code for the different effects or just the RBG value for each pixel would work but I would like some pre-mental breakdown advice before I plunge into this and fail.


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    I have a miller welder that blew some resistors and a voltage regulator on 2 boards. I can buy new boards but that's around $2,000. the resistors are burnt to the point I don't know what size they are. I've tried contacting Miller Electric but they told me they can't send me any info on the boards. Can anyone help me with this? I don't know a lot about electronics. Part numbers for the two boards are 207818 PC2 and 200841 PC10. image1.JPGimage11.JPG