Shared Projects by ruthsarian

See this project for a universal, surface mount version.

Note: I recommend ordering this PCB with the 2oz copper, 0.8mm option.

This circuit provides a means to cycle the power on a Galaxy’s Edge droid (especially BB-units) to wake them up after they go to sleep (from 5 minutes of inactivity) by briefly tilting the droid upside down.

This PCB is designed specifically for BB units to fit over a nub on the outside of the plastic housing of the BB’s motor, specifically the motor to the right of the logic PCB. This pcb would be placed with the component silk screen facing in towards the logic PCB and the droid silkscreen side facing away.

This design uses only through-hole components to make soldering a little easier.

The power transistor should be a logic-level N-channel MOSFET in a TO-220 package. Something like an IRLZ44N will work, but there are many options out there.

When soldered to the board, the MOSFET should stick out horizontally, do not bend it to face as it will not fit when the BB unit is closed.

The tilt switch should be bent away from the PCB, but parallel with the PCB, such that when the BB is upright it is making a connection.

The connectors used are JST-PH 2.0mm pitch connectors. I suggest a female socket for the BATT connector and a cable with a male connector for the DROID connector. This will allow you to plug the battery connector into the PCB and then connect the PCB to the battery connector on the logic PCB.

Note: links in BOM below are not affiliate links, just examples of where you could possibly locate the components needed to assemble this PCB if you do not already have them.

BOM:

• 2 x 100k 1/4W through-hole resistor
• 1 x 10k 1/4W through-hole resistor
• 1 x 100 ohm 1/4W through-hole resistor (this has all necessary resistors)
• 2 x 2n7000 N-Channel MOSFET in TO-92 package
• 1 x 10uF ceramic capacitor (this set includes 10uF capacitors)
• 1 x JST-PH 2.0mm female socket
• 1 x JST-PH 2.0mm male lead (this has both connectors)
• 1 x SW-520D tilt switch
• 1 x IRLZ44N N-Channel MOSFET in TO-220 package

This is a PS/2 to Mac Plus mouse adapter. It uses an ATtiny806 to convert the data stream and button events between the two. The code to support this adapter can be found on my github repository.

• The microcontroller is an ATtiny806 in a VQFN package.
• The 10u and .1u capacitors are in a 0603 package.
• The PS/2 adapter is a Kycon KMDGX-6S-BS
• The RJ10 jack is an Amphenol D09P33E4PA00LF
• The code for this project is based on glitterkitty’s Arduino-PS2-Mouse-to-Amiga-Adapter project.

This adapter may also work with a Mac 128, 512, and Apple Lisa.

This is a PS/2 to Mac Plus keyboard adapter. It uses an ATtiny806 to convert the scan codes between the two. The code to support this adapter can be found on my github repository.

• The microcontroller is an ATtiny806 in a VQFN package.
• The 10u and .1u capacitors are in a 0603 package.
• The PS/2 adapter is a Kycon KMDGX-6S-BS
• The RJ10 jack is a Wurth Elektronik 615004143821
• The code for this project is based on trekawek’s mac-plus-ps2 project.

The RJ10 cable that connects the adapter and keyboard must be a pass-through cable like what was used with the original keyboard. RJ10 telephone handset cables, while they fit the RJ10 jack, are crossover cables. You would need to cut and re-crimp one end of such a cable in order to make it work with this adapter. Otherwise you risk damaging your Mac and this adapter.

You may find some sellers on eBay who produce such cables specifically for the Mac Plus. Alternatively you could make one yourself (as I did) with these items:

• Telephone Handset Cord 2-Pack
• Transparent RJ9 Telephone Cable Plug
• Multifunction Ratcheting Crimper for Web and Phone

NOTE: RJ9, RJ10, and RJ22 are all basically the same thing. They are all 4P4C (4 Position 4 Conductor) connectors and will fit the Mac Plus and this adapter.

This PCB replaces the low-frequency antenna PCB for Proxmark3 Easy devices. It includes footprints for soldering a coil to the board as well as footprints for 2.54mm pitch headers and an SMA connector. It also has footprints to include through-hole or SMD resistors and capacitors to help tune and attenuate the antenna.

A simpler version of this PCB, without the extra footprints, is available here.

NOTE: I am not an RF wizard. I do not know what the RF implications of these extra footprints, especially if populated, are. Will they cause interference? Will they degrade the signal? Will they create RF noise in surrounding electronic devices? I do not know. However I have assembled one and it seemed to work fine so…

This PCB is designed to be a custom identity chip for Tron Lightcycle Run devices that accept identity chips. A 150mil SOIC-8 SPI flash memory chip (i.e. Winbond W25Q16BV) should be mounted upside down into the center hole of the PCB.

The 0805 100nF (.1uF) capacitor and 10k resistor are located to act as the tab to pull on when removing the chip from its socket. 0603 components will also fit those pads.

This PCB has been tested only in an identity disc bluetooth speaker.