Honda Wallpaper img imid option

To create a Wallpaper for your Honda 2015 you need to read the owner Manual and see the following limitations of the image:

Each image file can be up to 2 MB.
• The maximum image size is 1,680 x 936 pixels. If the image size is less than 420 x 234 pixels, the image is displayed in the middle of the screen with the extra area appearing in black.
• The number of files that can be selected is up to 255.
• Up to 64 characters can be displayed in the file name.

Also when you create the JPEG file you must not use progressive compression for the jpg file. By default gimp turns this on and the paint program does not.

DIY PDF Bluetooth foot pedal for Android

DIY PDF Bluetooth foot pedal for Android

Why do this:

There are many directions that someone can go to build/buy something like this , so why bother and why is this worth while ? 

I think learning and understanding how things work and why they work or don't keep people in a balanced state , IE ignorance is not good for any one, details are the only path out.

This project keeps my mind into a sample of current electronics/Android development and how new products can change the way we work and think.  Also this touches things I can use and do, IE wood work is a something I like to do, electronics is something I find fun and programming/machine building is in my blood somehow. The BT foot pedal is something that is changing how sheet music is read when playing a instrument IE no paper just a tablet and a foot pedal I play there for this is good . I found this link to a DIY foot pedal project Bluetooth-page-turner-pedal-for-sheet-music-apps .  It was a good project to find the bluefruit-ez-key which gave me the rest of my project as I built everything around it.

Designing the pedal:

 I always start with the minimum of what I need:

• Some kind of platform to rest the foot on to trigger a switch/page turn.
• Some kind of switch ?
• Power the unit ? 
• Some way to package the hole unit ?

Since most of this project will be built with the Bluefruit-ez-key unit most of the questions and design points will be answered there. Some key features of the EZ-key:

•  Power the module with 3-16VDC, so a 9V battery will work great.
•  Acts just like a BT keyboard, IE plug a switch to a key and it works.
•  Sends the 4 arrow keys, return, space, etc.

It looks like all I need is a platform to hold switches and a box to hold the EZ-key and a 9V battery. I start with the platform, some major points :

• Comfort , I don't want to be picking the foot up to hit a page turn, I wanted something to  use as a foot rest and then rotate the foot left or right. 
• Back and forward keys will be closest and I wanted a home and end function key to act as a top of document and end of document.
• Pitch of the pedal would be not too high and not too low so again minimal foot movement. 
• Size of unit should be small to be able to easily pack away in a gig bag.
• Stability of the unit no tip or chance of turning over during a session.  

I wanted a lot of pitch control on the platform so I made this with some scrap wood. Wood is something you can just form into any shape and pitch/angle would be controlled with the supports of the platform.  So I started with a shape that would be a arch that would allow the foot to pivot on the heel to each switch.  I determined a pitch that was comfortable to rest the foot on and then I cut out the pieces and glued it together.  

Pitch of the platform for resting the foot

Because the platform is small and the supports are large there isn't much space to hide a 9V battery and the EZ-key board so a external box was needed to support this, I went with plastic because it is a insulator and it is easy to cut and glue a box also I wanted clear to see the led's on the EZ-key board, again something small/strong. I added and on/off toggle to power on off the unit for convenience. 

EZ-key , battery, switch

I wired the box to the platform with some small plastic tie wraps and the wire holes in the foot switch supports.  I used monetary stomp box foot switches to do the key presses and wired them to the 4 keys and ground.  The keyboard keys I'm using are up arrow for page up, down arrow for page down, space for top and enter for max down,  See the EZ-key documentation for the keys and pins . 

Underside so that you can see supports and wiring

I wanted to use this on a Android tablet , I have a nook 9 inch with a Cyanogenmod cm11 loaded with Android 4.4.4 .  I found the pdf reader Ebookdroid which has a way to control the scroll down/up and could remap keyboard keys to do functions like top/end to space/return.  Ebookdroid is also opensource with alot of functionality in it but the documentation is not much but I was able to figure it out. There is a bit of documentation in the EZ-Key unit that I over looked and that is when paring the EZ-Key to a device you have to hit the very small button on the EZ-Key to start the pairing else it will never see it, I wasted some hours of work missing that button.  

The buttons are mapped right to left as bottom, page down, page up, top.

In general this project took months to figure out all the different pieces and to make the decisions on how I wanted it to turn out. There needs to be a top piece to the control box but for now I'm leaving it off for future debugging.  In general this is working well , but I am still in testing and will update with more results later.