Shared Projects by Zarradeth

A board designed to help make building a joystick for a Neo Geo easy and clean. This design uses terminal blocks with a 3.5mm pitch.

The design has screw terminals for each line from the DB15 connector as well as terminals for each button and the joystick. There is also space for an LED (powered by the +5v from the Neo Geo) and an extra terminal for the +5v line in case you want to do something with that.

The board is designed for use with Phoenix Contact’s Combicon PT series 3.5mm terminal blocks (however others with the same pitch will most likely fit). There are 6 2 position blocks for the buttons (+1 extra if you want one for +5v). There is 1 5 position terminal block for the joystick and 1 15 position terminal block for the DB15 in from the system. You could use the board just fine without populating the terminals (soldering directly to the holes for the terminals) but if that’s your goal a nicer and smaller board could be made with just pads/holes.

Note: The LED (including its resistor R1) and the +5v terminal block are completely optional.

(v1.8)

A board for building a line voltage inducer (as part of a phone cable) powered by USB. Meant for use with a Dreamcast and DreamPi. The board includes a DC-DC boost converter which boosts the 5v supplied via the USB to the required voltage- both 9v and 18v are supported, you just have to populate the board for the appropriate voltage. Phone jacks are used instead of splicing the cable to make the inducer as easy to use as possible.

• U1 is a TI MC33063AP
• D0 should be a Schottky Diode with a high enough voltage rating
• J1 and J2 were designed for Stewart Connector’s SS-6466S-A-PG1
• J3 was designed for Amphenol FCI’s 73725-0110BLF

A board for building a line voltage inducer (as part of a phone cable). Meant for use with a Dreamcast and DreamPi. The capacitor (C1) and resistor (R1) are sized for a 0603 package.

A breakout for the FXO-HC73 (4-SMT) series oscillators. C1 is for a 603 0.01uF cap.