Bike Maintenance (HUB)

imagesAs I was doing some maintenance of my bicycle, I tried to clean thoroughly the gears cassette. To remove it from the bike you need a special piece of metal that you can source from most bike shops called a hub key. When you dismantle the cassette you can use a normal wrench and simply unscrew the cassette. However when you put it back together, it is good practice to make sure that you tighten the whole thing to the right level of torque. In my case 20Nm. To do this, you would use a torque wrench. These come in different types with torque ranges that vary. In my case the torque wrench I have for the 20Nm, has a small 3/8inch or 9.5mm adaptor. Unfortunately the hub key, only comes with a large 27mm hex key. I tried multiple combinations of bit and pieces that I had in my toolbox, but nothing would work for this particular setup.

I then decided I could try to make a 3D printed adaptor that would fit my wrench and the hub key.

Hub Key
by technomupet67
on Sketchfab

 

I usually use Autodesk Inventor to design parts. However, I recently discovered a new online 3D CAD software which looks very promising. It is similar to Autodesk Fusion and Inventor but most interestingly it has full support for the IOS devices like Phones and Ipads. So you can design, update, change your designs on the go, as long as you have internet connection. This is OnShape.

As you can see in the pictures, I managed to get the adaptor part printed and it works amazingly well. I used the Makerbot filament and printed with 50% density to trade long printing time and solid feel for the part. It prints in approximately 1h15 minutes and is very strong. I am always surprised by how solid the parts can feel despite being very light.

As I was playing around with the design, I went back and forth between Onshape and Inventor which I know better. I then realised, I could create the Hub Key itself in Inventor a not have an adaptor at all. Simply creating a Hub Key with the right dimensions to fit my torque wrench. I knew I would not be able to print it at home, as the design is intricate and also would require a lot more strength than the PLA filament can give. I created the part and then tried to upload it to I-Materialise to see how much it would cost me to have produced professionally in steel or titanium. It works around £30 for the Steel part and £130 in Titanium. Finally, I also created a universal adaptor to go from a 3/8inch to 1/2inch socket. You can probably buy one from the shops, but I did not have it in my toolbox.

When, I printed my design in PLA, I had to make 2 versions, as the dimensions vary slightly when you print precisely dimensioned parts. For example, something that would have a design specification in your 3D software of 9mm square hole, might come out at the end with a 8.5mm or 9.5mm true dimension due to shrinkage of the PLA as it cools. One day, it would be interesting to print such a part in Steel to find out if there is substantial shrinkage or not with the prints coming from a professional shop etc…

Also, there is probably the option of having the part cut at a CNC workshop. I have not idea, if this would be more or less expensive than 3D printing. In any case, it is still fairly expensive to print versus simply buying from Halfords bike shop…

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Oli(ves) and Pancetta Cake

IMG_3459A very easy and very delicious recipe for a savoury cake. This one is made with black olives and pancetta(bacon). The hardest thing in this recipe is the oven time. Making sure it is cooked but still moist. That is the secret.

 

 

 

 

Ingredients :

  • 180g of Flour + 1 sachet of levure chimique  (11g or 2.5 Tea spoon of baking powder)
  • 180g of Pancetta
  • 180g of Black Olives
  • 150g of grated gruyere
  • 100ml of Olive Oil
  • 100ml of Single Cream
  • 3 eggs (I like to use duck eggs for this recipe)
  • Salt (not too much if bacon is salty already), Pepper, Nut Meg

Preparation:

  • Mix the flour and levure chimique in one container.
  • Mix the Cream, Olive Oil and Eggs together and beat this a little.
  • Pour this mix into the flour and mix well until smooth, then finally incorporate the olives, pancetta (diced) and gruyere.
  • Butter and Flour a cake tin, put into the oven for 45 minutes at 180 degrees celsius. Monitor how brown the top gets and check on the back end of the cooking if it needs further cooking or if it done. Use a knife to go into the cake. If the cake comes out dry, the cake is cooked.

The surface and sides should be crispy and the inside will be moist. It will continue to cook a little once out of the oven. You can leave in the tin or take out depending how you like to cut it etc…

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Cycling with Manu

IMG_3307

 

We just went on a nice Cycle and Running ride in south of France close to Lyon.

 

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Auntie Anne’s Pretzels

pretzels

Need to try this.

Screen Shot 2015-08-02 at 8.52.53 AM

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Plants have been delivered

KaffirLimeLarge2013LI ordered a few “cooks” plants at couple of months ago from a nursery : Plants for Presents, I had them delivered in a nice box and all the plants look good except the curry leaf plant which is really small compared to what I expected…anyway.

The plants :

  • Kaffir Lime Tree
  • Bay Leaf
  • Jasmine
  • Cardamon
  • Curry Leaf

Now it is my turn to look after them and they all have a slightly different care program !

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Bamix Mayonnaise

Simple Mayo

Ingredients :

  • 1 Egg / 300mml of oil (peanut or other vegetable)
  • Salt / Pepper / Herbs (if wanted)
  • 1 Tablespoon Vinegar / 1 Tablespoon Lemon Juice
  • 1 teaspoon Mustard

How to Make :

  • Mix all ingredients and whizz on high speed with Bamix for 10 secondes
  • That’s it …easy…Enjoy !
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Mum’s Ham Terrine

Ingredients:

  • 3 Packets of Ham of 130g each (non breaded)
  • 1 Gelatine sachet
  • 1 Chicken stock cube / 1 vegetable stock cube
  • 1 Pack of fine green beans
  • 3 eggs / pepper and spices / Parsley
  • A medium sized terrine

How to make:

  • Whizz the ham in a food processor, until fine
  • Boil the eggs until hard then whizz in food processor (separately from ham)
  • Boil / cook the beans and cut in small pieces of about 1/2 to 3/4 cm long
  • Layer half of the ham in the terrine
  • Then all the eggs
  • Then the beans and finish with the finely chopped parsley
  • Prepare the gelatine with the stock cubes and pour in the terrine
  • Place in the fridge to cool down overnight.
  • Serve small slices of 1cm thick with a spicy mayonnaise.

Some more great recipes at : La cuisine de Bernard

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Update on Hydroponics

update1Here is a few pictures of the current state of the plants in the garage. The Lemon balm has been growing quite well. However it seems to have lost most of its scent…very disappointing. I need to research the reason why.

The mist generator is working really well and the cuttings have no got roots growing big time. I added some food to the water during the week but it created some browning on the roots so I completely changed the water to simply replace with clear water. The mister creates a lot of heat in the water. The temperature of the water is up in 30+ degres celsius. I removed the top cover to avoid heat build-up on the cuttings.

The seeds have germinated as well and the young plants are growing nicely. I can’t remember what I planted … I know the front bit is chili plants but I can remember what is the back stuff…maybe salad ?

The orchid I was trying to save is not doing well at all. I removed it from the lights as I think it is actually diseased and I don’t want the disease to spread to the other plants. There might be some little bug eating the roots or something. It has not done well from the beginning so I think it was bad from the outset.

This year I am going to try to grow a lot more simple aromatic plants such as parsley and basil and coriander. This is what we use the most in the kitchen and there will be a real use for the stuff I grow rather than just some nice experiments. I think I will buy the plants from the food store in pots and try to go from there. I looked at the garden center and the plants there are very tiny.

 

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Preparing Hydroponics for 2015

hydroponics3I have been updating my Hydroponics setup for 2015. I have modified a little the hanging hooks and purchase a new set of propagation lights from Growell. I took some 4X T5 lights as it fits well with the wooden frame. I also decided to move the heated propagation tray up to the top shelf so that I can easily access it.

I am very pleased with the recovery of the lemon balm plant and I have made some cuttings which I have put into the AeroPonics setup. I bought a 3 disc mister instead of the traditional circulating pump. I have noticed that it creates a lot of heat in the water and  therefore the water heater is superfluous. However there is a risk that the setup will simply be too hot for the cuttings. I might have to do a second set later.

I have been looking into these new light form dimlux. They are very impressive but the top of the range one uses the same light bulb I already have in the d-papillon from philips. However, in my setup I do not have the possibility to dim down the light. I might consider this later in the summer.

Finally, I have moved an orchid that seem to be dying in the conservatory and moved it to the garage to see if I can save it with some proper light. I am not sure what is wrong with it. It has not been well since the beginning.

 

Make candied lemon balm leaves – Beat an egg white with a tiny bit of water. Dip lemon balm leaves in the mixture, then dip in sugar. Lay on a parchment lined baking sheet. Put in a 80 to 90 celsius oven until they look dry, but not browned. 20 minutes should be ok but can check every 5 after that.

As I was playing around I looked under the digital microscope. I took a piece of moss and a leave of Lemon Balm. Test to see update from webforwarding.

 

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Link to Secret Page

img_0801Jules and I have created a small webpage to scramble or de-scramble messages that we can send each other by email.

The code is simple, and easily found in the source of the page itself. It was just for fun and for us to do a small project together.

This could easily be made a lot more secure by simply making the encoding string a secret string that only him and I would know. It works a little bit like Enigma machine.

If you arrived on this page, you can use it for your own convenience : Here

We are no great experts but it just feels like James Bond stuff…for example here is a secret message just for you :

fb!uc qÂy ‘ +sc) mkb qÂy mkbx ?q@s!m q pxuqv yqm qÂy !kvc k? !qbp)c qÂy !knu vk c)qxu +sv) v)kcu v)qv qxu s@lkxvqÂv vk mkb A

Oli & Jules

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Couple of Cycle Ride

IMG_2985Went on a couple of cycling trips today, 15km this morning, then a 2 hours tennis game with Manu in the local tennis club ladder (we lost first set 6/7, 10/12 on tie-break but won second set 6/2, so net net we won), then went back for a 19km trip…

I am now having a beer and enjoying my crisps….I think it is allowed.

Discovered some sort of shipyard on the way, building some floating houses. Although the pictures look nice, I am discovering how much crap is actually floating in the water and how much accumulates at the locks.

 

Will take some pictures of the rubbish in the water next time. Today was too nice of a day to ruin it with floating rubbish.

Second trip below

TripIMG_2986IMG_2983

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Nice Koi Fish

It is mid-winter in UK and temperature is hovering around Zero. Freezing during the night and slightly positive during the day.

The water in the pond for the Koi carps is not freezing because it is well agitated by the circulation pump and because the halogen light is running 24h and generating some heat. I have not logged the temperature of the pond (a coming project…) but I would assume that it is around 5 degres celsius on average.

 

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Logging Data to a Cloud Server

IMG_2889I am trying to use my Arduino UNO to log some data points for some experiments that I want to do. (A few ideas : tracking the temperature in my Koi pond outside or tracking the speed at which the house warms-up in the morning, logging my electricity consumption, etc…)

 

The Arduino is connected to my WIFI in the house. It is battery powered so you can capture data anywhere.

It reads the values on the measurement PINS then sends this data through the network to an Amazon Database.

I then have a webpage on this site that Queries the data in the Amazon Database and display the results…

It is still work in progress big time….the main problem I am facing is the fact that I am always running out of memory space with the arduino. I have now purchased another arduino mega to try to complete this project.

So with the Arduino Mega, all the software works fine. I have had to learn how to change the HTML file for the graphic and spend a couple of hours working out the download of data from my Arduino to the Amazon servers. As usual, the smallest typo and you are spending hours trying to understand what is not working.

I am currently running my first “real” experiment. Number 7 ! This is logging the temperature of the pipework coming out of the boiler for the house. It is logging every 5 minutes to the Amazon Servers. I am travelling to the US tomorrow, so might leave it running for the next few days and see what happens….

It might be interesting to log data quicker as well to see how fast the boiler is capable of getting the water to high temperatures. I will probably run a different “experiment” for that.

I expect that the Wifi connection will probably break at some point or that the servers will reject my login. Anyway, it is still worth a go, I have been trying to do something like this for months !

Access Here.

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Sunday Ride to burn fat

bike1Today I really enjoyed a local 15km bicycle ride around the house. It is amazing what you can discover locally when you are on a bicycle. There is a lot of place that I would  never visit if I did not have the fancy bicycle. Thanks to the electric assistance, I felt like Superman going up the local Horsenden hill.

Weather was just between crap and wet.

Cleaning the bike and my clothes after the run was a bit of a nightmare…

map

Still I needed to burn all the nice food we did eat over the last couple of days ! Friday at Charlotte’s place in ealing and Saturday at Bingham Hotel in Richmond. Both very nice. We took the “discovery / secret” menu at Bingham.

 

 

This is a  6 course menu with the chef deciding for you what he is serving…given that I can eat anything it is very enjoyable to have somebody deciding for me what I am going to eat. Recommended.

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Homopolar Motor

IMG_2909So simple to build but hours of fun to “shape” your own version of this little electric homopolar motor. You only need a AA battery, a few Neodymium magnets, and some copper wire.

I ordered the magnets on Ebay and got 10 of them for a couple of sterling. Mine are 5mmX15mm circular ones. This is sort of right size for the AA batteries.

The copper wire was reclaimed from a bit of house wiring and stripped the plastic outer sleeve. I roll the wire on the table to make it straight so that it is easier to make a balanced shape. It also “looks” better on the final product.

I tried various diametre from very small to 1.5mm2. I recommend about 1mm2, because the smaller diameter heats up quite a lot and spins too fast anyway.

I make a small “dent” on the + side of the battery with a philips screw driver.

Stack a couple of magnets on the negative side of the battery. (That’s the bottom of the battery).

Then simply make a shape that will balance on the top and reach the magnet at the bottom. There is plenty of ideas for shapes on the net.

As I was playing with the copper wires I could not resist making some sort of mini-sculpture with an intricate set of right angles which fool the eyes. Hacking during the weekend is a lot of fun.

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Aubergine Farcie

IMG_2877Here is another classic in the family. Always a winner with the kids, really nice with some french fries or a green salad.

On the lower grill, the “extra” for a small meat loaf.

 

 

Ingredients :

  • 500g Pork Mince
  • 500g of veal Mince or 500g of turkey mince
  • 2 spring oignons / 3 garlic clove / parsley
  • 2 chicken cubes
  • 1 slice of dried bread dipped into milk
  • 3 slice of ham or pancetta or lardons
  • 1 full egg and 1 yoke
  • Nutmeg, Salt, Pepper, Curly parsley
  • 4 Large Aubergines

How to Make :

Slice the aubergines in half and scoop out the inside with a spoon. Be careful not to destroy the skin of the aubergine to avoid them to “leak” during cooking. Keep them aside to make the container for the oven cooking. Cook the flesh of the aubergine in a frying pan with a generous drip of olive oil, salt pepper to taste. The more you cook at this point the more you can give a chargrilled taste to the finished product. Don’t over do it !

Cut roughly the oignons, ham and bread. Crush the garlic. Put everything in a large bowl and mix together with the salt, pepper and chicken cubes which you have dissolved into a small quantity of boiled water. Put the eggs as well with the parsley. Mix well. Add the aubergine flesh at the last minute to that it has a bit of time to cool down.

Don’t forget the nutmeg, it gives a nice taste and goes well with the aubergine flesh.

Now put the meat “farce” into the aubergines halves which you have layed in a oven proof dish.

Cook at 160 degres for approx 45 minutes. Check the colour on the backend of the cooking. Ideally you want to baste the meat as it cooks. It will be more moist and juicy. It is also possible to simply forget about it for 30 minutes and check later…

I like this dish with french fries but it goes well with some salad or pasta.

I you have too much meat mixture, you can cook the “extra”  separately in a small cake dish or “terrine” to make a simple meat loaf. This can be eaten cold or hot over the following days…

Enjoy !

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Quadcopter Batteries

IMG_2876With the Quadcopter, it is really important to make sure that the batteries you are using are properly charged. This is because the voltage of the Lithium Polymer batteries drops very quickly at the back-end of their life. As such, you can be caught by surprise with your Quad away from you, running out of juice and no opportunity to come back to home base. Losing the quad and the video camera is an expensive problem.

So keeping track of which battery is charged and which is empty when they all look the same, is not as straight forward as one might think.

I wanted to be able to sor tof flick a switch that would remind me if the battery is charged or empty.

I designed a simple 3D printed tracker, which you can simply flick up or down. When you put the “F” towards a side of the frame it means the battery is full. The opposite is either empty of partially used.

I simply super glued the parts on the side of the battery.

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Tarte au Sucre – Traditional – Update 1

Today I made some good old “Tarte au sucre”, family tradition style.

Here is the recipe from “Marraine de Quievrain“, collected in person on a piece of paper that was lying around on the day…about 14 years ago (sometime in 1999 I think). I was visiting with my then girlfriend -to become wife – doing a tour of the Belgian family members. She had cooked a few tarts and the house had a great smell. I asked how to make it and she did tell me !

My grandma, my aunty, my mum, my cousins, all make it with variants of “the secret bits”.

It always makes me think of the old days when I was a child and although we had no idea what was to come next for our lives, we knew inside that this was special time to be enjoyed without moderation.

Here is my interpretation of the recipe :

Ingredients : 250g Flour / 125g Butter + more for top / Active Dry Yeast / 3 eggs / White Sugar and/or Cassonade.

  1. Make pastry : 250g of Flour / 125g of soft butter / 2 egg yokes -put it all in a bowl. Prepare some Active dry yeast – a small glass of water (hot from the mains) with 1/2 tablespoon of active dry yeast and a teaspoon of sugar to help activate. Mix all above in a bowl. Update 1: It is better if you mix flour and butter first. simply crush the butter between your fingers and make a crumble of butter and flour, then add egg and yeast. Either by hand or using machine. if by hand add milk or flour to get to a ball of paste that is not sticky to the fingers and not too dry to the touch either. This is the tricky part. The weather, the temperature, the flour will make it all change a bit.
  2. Put the prepared mix in a bowl to rise for 1 hour. Protect from cold drafts to help raise. Most modern houses with central heating will just be fine. If you live in a drafty house simply put the bowl in the oven (off).
  3. Roll the pastry slightly thick (6mm). It’s not Pizza, so the pastry will be a bit sticky. Flour the rolling pin. Roll it so that it fits your cooking tin. I usually do one large tart.
  4. Put the sugar on the pastry. It is down to how you like it. Lots or not. I usually simply spread it straight from the bag over the pastry. I prefer to use white sugar together with a little bit of cassonade. I don’t like it if there is too much but there is plenty of recipes on the net for thick sugar coatings. Whisk an egg with a little bit of milk. Put it over the sugar. Spread the liquid over the sugar so that all the sugar is wetted by the mixture. Put a few small bits of butter all over the tart. Maybe 6 X 1/2 teaspoon.
  5. Put into a pre-heated oven at 250 Celsius. Update 1: I find 250 to be too hot. I now use 200-210. (if you make the oven less warm, the tart will raise more which is nice also). Cook until it looks good…
  6. Let it cool. Then eat…or even better wait for the next morning and have it for breakfast. If I make the tart in the morning, there will be none by the evening. If I make it in the evening, we will have some for breakfast the next day !
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Sorting Skittles !

sorter1I like skittles, especially the crazy sours ones, I also like to eat some colors more than others. I am often found sorting them out in my hand. After seeing a video on youtube of somebody building a skittle/M&M sorting machine, I thought I could do something similar.

So far, I have build the electronics to sort our the colors with an Arduino, a RGB Sensor and a small servo and a NeoPixel ring ( All from Adafuit) . The basics are in place, and you can see a small video of the detection process below.

 

I have then started to build a 3d model of the sorting mechanism that I will use. I made a few prints on the Replicator 2X. (with a few tweaks I got to a model I am happy with). It was a pain to find the right setting to extrude the PLA at the right speed and temperature. 3D Printing is still very much in the DIY/Hobby section…

I found that the XT-Filament is the best as usual to print consistently with predictable results.

Below is current state of the project…still early days ! Goes well with this music…

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QuadCopters – Update 1

IMG_2805Almost Xmas !

As usual, I am getting myself a few toys…this year one of them is a new QuadCopter kit from Team Black Sheep. I have purchased half of the parts from USA and half from UK. In particular it is necessary to purchase the Lithium Ion batteries from UK to avoid complicated transport issues.

I will post here a few updates as I progress in the build.

My friend Geraud is doing exactly the same and we are planning to race each other soon…Star Wars style….

The kit consist of mainly :

4 motors with 30A controllers and propellers

A multi layer frame to carry all the electronics and the battery

A video camera to provide the “vision” back to the pilot

A video camera for high resolution footage

A GPS system to help stabilise the very unstable craft !

A video transmission system with on-screen-display of vital statistics (battery voltage, speed, altitude, heading, etc…)

A remote control transmitter and receiver and a small tv screen to watch it all happen…

Here is a couple of Teasers…

UPDATE 1: I have now finished the build and have been flying a few times. So far mostly using the drone as a remote helicopter without the first person view goggles. I did a couple of flights with the first person view mode and have enjoyed it very much, need to build confidence to fly closer to the ground and faster…

I just went to Spain for a week and did a few videos with the footage from the onboard GoPro camera. See for yourself below :

 

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