Reproduction of the unobtainium CRE401 RRC array chip found on SNK Neo Geo circuit boards.

Source: github.com/mourix/CRE401_Reproduction

Low distortion Wien Bridge Oscillator - High Performance Version. Selected values for 1,000 Hz frequency output at 26 volts peak to peak. C1, C2 are precision film capacitors for low drift and distortion. IC1 is an OPA1612 ultra-low noise and distortion audio op-amp. VR4 is an external 10K potentiometer for adjusting output level. R2, R3 are for adjusting series and parallel bridge frequency circuits. R1 adjusts the negative feedback of the oscillator. L1, L2 are 14 volt incandescant bulbs used in the negative feedback circuit. Changed resistors to 1206 low noise type. Revision 1.1

Multifunction Avionics Gauge for flight simulation with Arduino Pro Mini Sim&IT Wiki

The PlayStation sends commands to the controller and the controller responds with the status of the buttons and joysticks. The command and data is read by the microcontroller and after some checks to see if the button combo has been pressed, it will reset the PlayStation. The communication is almost exactly like SPI, which is why I’m using it in the later versions of the mod.

The PlayStation 1 reset mod allows you to reset the PlayStation 1 through a combination of button presses. This is particularly useful if you own a PSIO from Cybdyn System/Mode and x station it will allow you to get back to the MAIN menu without getting up from your couch. And as of V1.2 it also supports the xStation reset.

The default reset combination is Select + Start + L2 + R2 for digital and analog controllers, A + B + Trigger for a GUNCON. Since V1.2 the Select + Cross + L2 + R2 combination has been added. It’s used for a longer reset pulse to add support for the xStation by @ramapcsx2 on github / @_ramapcsx2 on twitter.

The button combination for the controllers is:

L2 + R2 + SELECT + START, for a short reset pulse L2 + R2 + SELECT + CROSS, for a long reset pulse, since V1.2

Parts list: Only two components needed for this mod: the microcontroller and one capacitor.

1x 16F18325; 14-SOIC package 1x 0.1µF 16V; 1206 or 0.1µF 16V; 0805 or 0.1µF 16V; 0603 package

*Note: Capacitor smd sizes:

1206 = 0.125 in × 0.06 in | 3.2 mm × 1.6 mm 0805 = 0.080 in × 0.05 in | 2.0 mm × 1.25 mm 0603 = 0.060 in × 0.03 in | 1.6 mm × 0.8 mm If you don’t have a lot of experience soldering I recommend going for the 1206.

How to install this is a 1 wire install only!!!

1.Remove the six screws from bottom of your playstation
2.Unplug the flex cable from the ps1 controller board 3.Remove the screws holding the port to the bottom of the case 4.Solder the pcb to the back of the controller port 5.Then solder 1 wire to the rst (reset pad) on the pbc board 6.Then solder the other end of the rst wire to the reset point on the motherboard and you are done “ 7. Put everything back together again

This is a remix of the original design

ALL INFORMATION CAN BE FOUND HERE BY THE CREATOR https://github.com/pyroesp/PlayStation-1-Reset-Mod/wiki/How-to-make%3F#parts-list

first version of AFE PCB with 1632 battery holder (added optional bypass cap around Vref IC)

github.com/bkw777/TPDD_Cable

tandy.wiki/TPDD

78xx/78Mxx power supply. 1Amp max when potted (2A max if 2Oz copper used). Instructions and BoM for creating a 3.3V @500mA power supply are at: http://www.rv-project.com/tips/level1.php

Now with address header for 4MB operation

Labjack 42 TC board, 1 of 2

Labjack 42 TC Board, Top

16x2 OLED/VFD display shield for Adafruit Metro Mini 328 and DS3231 Precision RTC Breakout.

Tested with: Winstar WEH001602A and Noritake CU16025-UW6J

Copyright and Disclaimer

Copyright: René Richard

https://github.com/db-electronics/phoenix-audio-adapter-kicad

This documentation describes Open Hardware and is licensed under the CERN OHL v. 1.2.

You may redistribute and modify this documentation under the terms of the CERN OHL v.1.2. (http://ohwr.org/cernohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN OHL v.1.2 for applicable conditions

Phoenix Audio Adapter

I didn’t want to have a bunch of stripped wire connectors on my Extron Crosspoint 12x4 video switch so I decided to make this simple adapter which allows a stacked RCA stereo audio jack (Digikey# CP-1435-ND) to be interfaced to a standard 5pin 3.5mm Phoenix connector.

Output Differences

The Extron Audio output wiring is different than the input wiring. There are 2 PCBs in this project. Be sure to use the output PCB for your outputs!

Phoenix Adapter

This folder contains a PCB which connects L- and R-. You “can” use this PCB for all your needs, provided you cut the R- and L- traces for outputs. If you forget to cut the traces it’s probably not a big deal since there is internal resistance (50 ohms or so) in line which each output. Obviously best if they are cut, but not catastrophic by any means.

Phoenix Adapter Output

This folder contains a PCB which leaves L- and R- floating.

Copyright and Disclaimer

Copyright: René Richard

https://github.com/db-electronics/phoenix-audio-adapter-kicad

This documentation describes Open Hardware and is licensed under the CERN OHL v. 1.2.

You may redistribute and modify this documentation under the terms of the CERN OHL v.1.2. (http://ohwr.org/cernohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN OHL v.1.2 for applicable conditions

Phoenix Audio Adapter

I didn’t want to have a bunch of stripped wire connectors on my Extron Crosspoint 12x4 video switch so I decided to make this simple adapter which allows a stacked RCA stereo audio jack (Digikey# CP-1435-ND) to be interfaced to a standard 5pin 3.5mm Phoenix connector.

Output Differences

The Extron Audio output wiring is different than the input wiring. There are 2 PCBs in this project. Be sure to use the output PCB for your outputs!

Phoenix Adapter

This folder contains a PCB which connects L- and R-. You “can” use this PCB for all your needs, provided you cut the R- and L- traces for outputs. If you forget to cut the traces it’s probably not a big deal since there is internal resistance (50 ohms or so) in line which each output. Obviously best if they are cut, but not catastrophic by any means.

Phoenix Adapter Output

This folder contains a PCB which leaves L- and R- floating.

Copyright and Disclaimer

Copyright: René Richard

https://github.com/db-electronics/phoenix-audio-adapter-kicad

This documentation describes Open Hardware and is licensed under the CERN OHL v. 1.2.

You may redistribute and modify this documentation under the terms of the CERN OHL v.1.2. (http://ohwr.org/cernohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN OHL v.1.2 for applicable conditions

Phoenix Audio Adapter

I didn’t want to have a bunch of stripped wire connectors on my Extron Crosspoint 12x4 video switch so I decided to make this simple adapter which allows a stacked RCA stereo audio jack (Digikey# CP-1435-ND) to be interfaced to a standard 5pin 3.5mm Phoenix connector.

Output Differences

The Extron Audio output wiring is different than the input wiring. There are 2 PCBs in this project. Be sure to use the output PCB for your outputs!

Phoenix Adapter

This folder contains a PCB which connects L- and R-. You “can” use this PCB for all your needs, provided you cut the R- and L- traces for outputs. If you forget to cut the traces it’s probably not a big deal since there is internal resistance (50 ohms or so) in line which each output. Obviously best if they are cut, but not catastrophic by any means.

Phoenix Adapter Output

This folder contains a PCB which leaves L- and R- floating.

This is a simple 2 transistor flashing circuit designed to introduce a child to soldering. Unfortunately the pad sizing and spacing were slightly too small for a first introduction to soldering, but will probably serve well for someone who has soldered a couple of projects and looking for a more challenging project to improve their skills.

Particular areas likely to cause difficulty are soldering Q1 and Q2, where the chance of a solder bridge is high.

BOM

• D1, D2: 5mm Light Emitting Diode
• R1, R4: 470 Ohm 1/4W Resistor
• R2, R3: 22K Ohm 1/4W Resistor
• C1, C2: 30uF Capacitor
• Q1, Q2: 2N2222 Transistor

Note: The flashing speed is currently too fast. This could be improved by increasing the size of R2 and R3, or increasing the size of C1 and C2. Increasing the resistor size is likely to be easier, with 100K likely a reasonable size (testing to follow)

Circuit Diagram: To be uploaded