A short video demonstrating a quick and easy way to build a charge protection board for 3s (3 x 18650 batteries in series). 3 x 18650 in series will give you around 12v. The board will help protect the battery pack from overcharging, over-discharging, over-current and short circuit.
I’ve been research designing circuit boards design and tried a few different such as eagle, ki cad and came across easyEDA which is perfect for newbies like myself. Its simple to use, the SMC (Surface mount components) selection is all tied in. You can order a PCB and have all the component (well most of them) soldered at the manufacture JCL without you have to do any soldering at all! Take a look at the video below for a quick demo
A live docker tutorial for the Sheffield Hackspace. A run through through what is docker, benefits of docker, popular docker containers for Hackspace members (Node-Red, MQTT, Octoprint, Grafana, InfluxDB, ROS), running image as containers and how to develop using visual studio code docker plugin.
I needed a new bag for my Brompton bike. All the bags were very expensive, £70 for the basic bags so I did what any maker would do and started on the journey to make my own bag. There was a few challenges:
1 . Find a way to connect the bag to the front carrier block securely.
2. Find a cheaper bag that i could modify easily and thats water proof
3. Work out if anything else was need, e.g. bag strengthening.
I started by look on thingiverse for 3D printed Brampton carrier block, its always a good place to start to see how other people have attacked the problem. I didn’t find anything. I set work to design one myself using fusion 360 – Matt SB gave me a helping hand to get started with as its the first functional 3d object I’ve printed. I came up with the item below after a few iterations printed on my Aldi 3D printer.
The next challenge was to find a bag. I search on the internet and i purchased a bag from aliexpress for £4 to test the process out. The test went fine and I used the bag for about a year but the wear and tear took its toll on the bag so I bought a better quality bag from decathlon shown below. This is the bag that i will describe on the rest of the blog.
I’ve got the carrier block designed and the water proof bag. Now I need to attach everything and make sure it wont damage the bike/contents of the bag. The back board in the bag was a bit bendy and I’m carrying my laptop to and from work so I wanted it to get there and back in one piece. To strengthen the back I bought a A3 clear polycarbonate makrolon plastic panel Sheet 3mm thick from ebay. This went down the back of the bag to strengthen it. I sawed it to shape to start with and then bent it using the hot gun in the hackspace. This gave the bottom of the bag something solid so the laptop or other items in the bag wouldn’t sag and hit the front wheel. I also added some neoprene foam to the bottom of the plastic sheet to cushion any items put in the bag.
The next task was to attach the bag to front carrier block. I did this using a hand drill and screwed it together.
I wanted a separate area for the bag.
Quite often, you may download sections of a website, only to find downloading separate pages does not maintain the links between them.
There is an easy way to grab whole sections of a site (or even a whole site), such that you can run it locally offline with all the links between pages intact, and you can even upload the whole captured sections to your own website and the relative links will still work!
Copy and paste the index page or a sub page into httrack
It works on Windows 2000 to Win10, and Linux. You can use the portable version which will run from a USB stick, or you can use the installer version.
And it’s FREE.
You can capture (mirror) several websites complete with their data, and they may be accessed from a master web-page; as in the example below.
The REALLY cool bit is that downloadable files such as PDFs and jpg files are saved too. If it’s in a directory and referenced by a regular page link, it will be downloaded.
Error reporting is also good. Use this on your own website to show up a list of any broken links – and other errors.
Let me know if you learn any neat tricks with this software…..
On April 1st (no joke!), for the third year running, we will be hosting an Arduino Day event at the hackspace.
The event itself will begin at 10am and will include several talks from current members on Arduino basics, a show and tell of projects that have been made using Arduino and, of course, the workshop will be open for anyone to try their hand at building something, with lots of members on hand to help out.
For non-members the event will be free to attend so if you think you know anyone that would be interested in learning about this invaluable digital making tool, or would just like to learn something new please share this post with them.
The presentations / talks given on the day will be:-
10:30:- What is an Arduino
11:00:- The Arduino IDE
11:30:- Writing an Arduino Program (Sketch)
12:30:- Installing Libraries and Boards
13:00:- Data protocols (intermediate talk)
As well as this we will have members on hand to answer any questions or help out with your projects up until 16:00
A great weekend was had by all as multiple members of SHH&M went down to Loseley Park for EMF2016. Our entrepid woodworker, AJ, went ahead of the rest of us to build the sink frames, back of the bar and multiple other items ahead of over 1400 people decending for a weekend of camping. However, as should be expected from a group of hackers and makers camping, electricity and high speed internet were essential amenities. We had our own Village, complete with flag, and took along some Go-Boxes and Bugs’s pancake engraver to show off (blog to follow!).
Events over the weekend included numerous talks from lockpicking to film special effects and latest updates from CERN to magic tricks and illusions. There was also the opportunity to make a wide range of things such as a titanium spork, a patchwork pin cushion and a pin hole camera. Evening events included film showings, the infamous Robot Arms with NottyHacks Barbot, a light maze and FirePong – yep, ping pong with fire! There was also a giant blow up rabbit which you could change the colour of by tweeting a colour!
All the talks are available to watch on You Tube if you feel want to catch-up with anything.
A one day event is planned for next year, with the next EMF camp due in 2018. If this year is anything to go by, both should be highly recommended!
Recently I thought that I would experiment with some new methods for box making. This particular box is made from pine, not exactly something you would use to make quality furniture with but it is really only a practise piece.
The box is joined together with mitered splines, the top and bottom panels are rebated 15mm in from each end. I made the box as one piece before separating the top using the table saw. I also put a chamfer on the front bottom edge of the box and the top of the box lid as well as the top edge on the inside of the panel, this made it look a little more decorative and also hides any uneven gaps that may appear between the lid. I cut the grooves for the splines using a jig I made for the table saw that holds the box at a 45′ angle to the blade. I finished it off with a few coats of varnish.
I’m hoping to do some more intricate box making using some finer hardwoods in the future but overall this project went really well, next time I think I’m going to get hold of some jewelry box style hinges, I used piano hinge on this box which was not idea and is a bit of a pain to work with.
We had a good time at Hillsfest this year! Lots of friends and new faces with stalls in the Maker’s Dome, and we really enjoyed chatting with everyone who came up to make wollen bobbles (Thanks to Jo and Sarah for running that!), and ask about all the 3D printed, lasercut and otherwise member-built things we had on display.
We know a lot of you signed up to the mailing list, and a lot more plan to drop into one of our scheduled sessions at our workshop in Portland Works. Come along! See the space, chat with our other members and find out what your local hackspace can do for you.