If you want to help me with any of my projects I setup https://www.paypal.com/paypalme2/leelegionsmith, Any help would be appriciated especially towards the Midi CDJ conversion. After a lot of messing about I now have a pair of these cdj 800 players converted into midi devices using a Teensy 3.2 dev board. This shows them setup as decks C and D and working along side the S4 on decks ch 1 and 4. Things to do. The pitch moves in big steps so unless you have the pitch range at 4% it's hard to get a good pitch match. The jog wheel is still moving a little too fast, but I am sure I can resolve that. I am working on a jog wheel logo that lights up when the jog is pressed. Get track details sent over and if possible full colour tft wave form display, but first use a simple lcd display and have a config screen for midi channel and key delays ect. I have just about resolved all of my issues and have 14bit pitch control and the jog wheel is working a lot better thanks to changing the mode traktor uses. The lcd screen is working and I have a basic setup program you can acces to adjust params. Have a look at this quick and dirty guide. http://imgur.com/a/o7jd8 I just uploaded this software guide. https://www.youtube.com/watch?v=Ww2bkJlYirQ ... https://www.youtube.com/watch?v=SNMew0yMfGE

I was looking for a evening project so started to write a version of Tetris on what I had spare. I picked out the Teensy 3.6 with a SPI screen as it runs quite fast and the SPI screen has a highly optimised driver for the Teensy. I started at home on the breadboard and it took a few nights to get a working game. I really enjoyed solving each part of how to write Tetris on the SPI based screen. you can only send commands to draw one thing at a time and you can't send a complete a screen buffer in one go. The main challenge was keeping the screen draw commands to a minimum while not showing constant flashes as you over draw the tiles. Although the screen is 320x240 I keep each block to a 16x16 rectangle to help reduce the number of draw commands. After I had it working at home I made a new soldered version with a Teensy 3.2 that was split into two parts with a flexible connection to the screen as I new it would go into a multi part 3d printed case. Next I started to rough out a simple case design and gradually added details as I went. It was about a week of testing and printing to get to the final version with about two days of trial and error to get the Tetris tiles to print on the top of the game. I ended up using a command to stop whats known as Elephants foot on the first layer, this helped widen the space between the tiles until it looked good and would print well. I want to try a few other games on this system, but will need to think about what I could do with the limited SPI bandwidth. It was printed on my CRS20-PRO with Cura 4.1 and Crewsome mod. Anyway I hope you find this interesting. ... https://www.youtube.com/watch?v=9vKr1JQA2Mc

At last we can put all the parts together and test fit everything. I just use clamps to hold the two sides together and nothing is glued yet. Thanks to the warped wood it's a bit wonky but the coin door helps to keep it straight. All the music is by Joakim Karud http://youtube.com/joakimkarud ... https://www.youtube.com/watch?v=hOAan6Uy7mE

If you want to help me with any of my projects I setup https://www.paypal.com/paypalme2/leelegionsmith, Any help would be appriciated especially towards the Midi CDJ conversion. I have a pair of beyond repair cdj 800 and I thought I would have a go at converting them into midi controllers. I am using a teensy 3.2 board and it's so easy to work with I am making rapid progress. I do have some issues with the pitch control and how the teensy is reading it and also I am not happy with the jog wheel, but that is me comparing it to a cdj with a cd in use. Next I have to get the other buttons and leds working, but as they are on the main cpu board for the display it will be a bit tricky and I will have to cut a few tracks to stop the on board chips messing with my readings. I am looking into adding a display of some sort, but that's a long way off. Once I have this 100% I will post some information on how to do this your self. http://i.imgur.com/16Jnaf7.jpg ... https://www.youtube.com/watch?v=BZHaNiji5PY