Wall Mounting TV

This is a post discussing wall mounting my TV. Here is the before photo:


Behind the left speaker is a computer that is connected to the TV. The white cabinet is hiding a router and cable modem. The house was wired with a cat 5 and coax run near the TV. After some searching an adapter was found that allows for HDMI to be run over CAT-5 (J-Tech Digital JTDHDEX-1 HDMI over single CAT 5E,6,7). With some re-wiring the Modem, computer and router were able to be relocated to the basement. The TV was mounted using a Cheetah Mounts APTMM2B TV Wall Mount. The computer was using a Logitech Keyboard K400 keyboard. This worked fine with the computer close to the TV. Once the computer was moved to the basement the keyboard was not as responsive as hoped. This was fixed by using a 50 foot active USB extender to move the USB adapter closer to the TV. Overall the install turned out clean with no visible cables:




Pantry Box Holder

This was project was done since no commercial product could be found. This was originally done with a wine box turned on its side with the lid removed. The box was getting a little worn out so a replacement was made. The replacement consists of 4″ square fence post cut to 12″ lengths. The 12″ lengths were attached together with construction adhesive.





Lobster Ravioli

This was a fairly time consuming dish to prepare. This dish is lobster ravioli with homemade pasta in a brown butter sauce.


  1. cook 2 lobsters in a large pot and clean off meat. IMG_4193
  2. While cooking lobster also roast garlic in oven. Zest and juice a lemon and chop some parsley.
  3. Then mix the filling consisting of the lobster meat, lemon, parsley and  ricotta cheese.IMG_4204

  4. Then make fresh pasta dough. Sheet the pasta cut it out and form the ravioli. While this is being done also brown some butter in a pan.
  5. Mix heavy cream with the browned butter. At the same time boil the ravioli. IMG_4210

  6. Finally mix sauce and pasta and serve:IMG_4216

Photography Light Box

Here is a simple photography light box that was constructed out of foam core board. The frame was cut out using a rotary cutter:


The foam core was then assembled using a hot glue gun:


The holes in the box were covered using parchment paper. The paper was pinned to the box instead of glued so it can be replaced if it turns yellow over time. A set of three 100 watt incandescent light bulbs were used. One bulb was placed in a desk lamp above the box. The other two were attached to some simple 2×4 frames on the right and left of the box. Here are some action shots:

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Here are some resulting photos:

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Queso Fresco Cheese

Recipe from Home Cheese Making by Ricki Carroll 3rd Edition page 94.

Creamline Milk from Mooville Milk. This milk has better yield then normal pasteurized milk from the grocery store.


Rennet and starter:


A clever modification to hold the thermometer in the pot:


Curd in the press:


The press with weight applied. The press is constructed out of two cutting boards and some threaded rod. The “cheese mold” is a desk organizer with holes cut into it for drainage. An extra large empty metal can is used to press down on a plate inside the cheese mold.




Chicken stock made out of the whey:


Sanyo PLC-100N Led conversion

While browsing the local E-waste recycler I came across this a Sayno PLC-100N projector with what appeared to be a burned out bulb. The projector was on sale so I figured it was worth a shot on getting it up and running.

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After taking the projector home and powering it up the projector emitted a strong electrical burning smell with the bulb connected. After a quick search the cheapest  replacement bulb for this projector was around $100. This seemed steep for something that may or may not work. My initial thought was to use a large 100 watt LED that I have experimented with in the past. This would be significantly cheaper than the replacement bulb and hopefully have a longer life span and run cooler.

After some initial diagnosis, with the bulb removed, the projector would briefly power up then shut down. My initial guess was the projector was sensing the lack of a bulb. After examining the bulb power supply it had three pairs or wire going to/from it. The black and white wire were power and the white wires connected to the bulb. The pair of pink wires went to an optocoupler in the supply for isolation. After some careful probing it was determined that disconnecting the pink wire harness from the main board tricked the projector into thinking the bulb was OK. Since the bulb power supply was no longer needed the black and white power leads were disconnected to permanently power the bulb supply off. The supply could be physically removed but it is used as a mounting point to secure the outer case so it was left in tact.


Now that the projector was working it was time to modify it to accept a new LED based bulb. After some light metal work the LED and a heat sink were attached to the bulb bracket. This allows the LED to be removed if I need to service it in the future. The old bulb is shown on the right and the new LED bulb is shown on the left.


Here is a shot of the bulb installed in the projector.


The bulb is powered by a HP power brick most likely from a printer also from the E-Waste recycler. The Brick sources enough current to make the projector visible while keeping the LED well below its rated max current. Low current and the heat sink keeps the LED cool while running the projector for long periods of time. A good Future improvement for this project would be to shoehorn the power brick into the projector case. This could be accomplished by removing the old lamp driver PCB and putting the power adapter in its place.  Taking a shot of the projector working proved difficult so it was omitted from this post. Overall this was a simple project with a usable result. The projector currently has a Raspberry Pi running OSMC  to it.


Impossible Circuit

This YouTube video created by Henryk Gasperowicz interested me so I decided to make a replica of the circuit shown in the video.

The circuit appears to be a simple series parallel circuit but behaves differently. The trick is a small oscillator enclosed in the 9V battery snap. This oscillator turns the DC from the battery into a square wave. Hidden diodes on the switches and LEDs steer the LEDs  in the circuit. A schematic for this circuit can be found on Henryk Gasperowicz Google+ page. He builds all his circuits dead bug style. Dead bug style circuits are small but also difficult to build. Due to this a PCB was designed for this circuit.


Due to the small size OSH Park charged $1.10 shipped. The 0402 parts were hand soldred without a microscope so it may look a little rough. Here is a shot of the assembled board and the circuit in action