(DIY) Pi1541 ZERO² + EPYX FAST LOAD CARTRIDGE for COMMODORE 64

+Rotary Encoder

(Easier navigation)

+Buzzer

(Disk Drive head movement sound emulation)

+ON/OFF Switch for Epyx Fast Load

(For Commodore 128 users, to use in C128 mode)

+Power-Cut jumper (J3) for Raspberry Pi

(Remove J3 to protect the computer when using an external power supply for the Raspberry Pi)

RASPBERRY Pi1541 ZERO HAT (C64 DISK DRIVE EMULATOR With Rotary Encoder) and EPYX FAST LOAD CARTRIDGE TOGETHER for COMMODORE 64

Hello,

This is a tested and working project.

This is an Easy DIY project, all components are through hole, marked on the PCB, Easy to solder, Easy to make ;)

Actually, this PCB is a combination of two independent projects, one of them is Pi1541 (Commodore disk drive emulator) and the other is "Epyx Fast Load" Cartridge. They can be used individually or together.

https://www.pcbway.com/project/shareproject/RASPBERRY_Pi1541_HAT_with_ROTARY_ENCODER_COMMODORE_64_DISK_DRIVE_EMULATOR_0c4b9675.html

https://www.pcbway.com/project/shareproject/COMMODORE_64_EPYX_FAST_LOAD_CARTRIDGE_with_ON_OFF_SWITCH_5fe35722.html

Pi1541 is a real-time, cycle exact, Commodore 1541 disk drive emulator. You can load and save commodore64 programs, D64 .PRG ... extensions games/software from a Micro SD card, it is an alternative to SD2iEC, for more info please look at this link.

A lot of experienced Commodore 1541, SD2iEC, Pi1541 users prefer EPYX FASTLOAD, because of its high compatibility with Commodore hardware and software.

The source page link of Pi1541 PCB drawing is below. (Option A)

https://cbm-pi1541.firebaseapp.com/

Many thanks to Stephen White for Pi1541. You can visit his site and make a donation.

Do not forget: solder 2 x 20 pin female header and 2pcs. 3 pin 11mm male headers before OLED display :)

SETTINGS FOR Pi1541 HAT DISPLAY PIN ORDER:

For VCC-GND-SCL-SDA Displays; SHORT VCC + VCC

For GND-VCC-SCL-SDA Displays; SHORT GND + GND

SETTINGS FOR ROTARY ENCODER:

Disable: no jumper

Enable: J1 and J2 with jumper (please look at the images)

(Rotary Encoder works fine with Raspberry Pi Zero 2W but not working properly with Raspberry Pi Zero.)

You can download sample SD Card files and ROM files from the bottom of this page.

DO NOT CONNECT EXTERNAL POWER SOURCE TO THIS CARTRIDGE WHILE IT IS INSERTED TO C64 !

(Do Not use HDMI output of Raspberry Pi with this Pi1541 HAT)

You can find the other cartridge versions of Pi1541 in the links below:

COMMODORE-64 Pi1541 FDD EMULATOR with TURBO FILE BROWSER CARTRIDGE (Without rotary encoder)

(DIY) Pi1541 + EPYX FAST LOAD CARTRIDGE for COMMODORE 64 (Old version, without rotary encoder...)

Components for Epyx Fast Load Cartridge Part:

27c64 or 27c128 or 27c256 or 27c512 or W27c512 (DIP28) (Requires Programming)

DIP28 wide IC socket

74LS07 (DIP14)

DIP14 IC Socket

100nf CAPACITOR

0.47 μF CAPACITOR

2.7K 1/4 WATT RESISTANCE

RIGHT ANGLE TACTILE BUTTON (For C64 RESET)

3pin 2.54mm SPDT slide SWITCH (For ON/OFF Switch)

Components for RASPBERRY Pi1541 ZERO HAT Part:

Raspberry Pi Zero or Raspberry Pi Zero 2W (Other Rasberry Pi models are NOT suitable to work from C64 expansion port)

5 pcs. Right-Angle Tactile Push Button

4 channel. bidirectional logic level converter

6 pin Male DIN Connector

0.96 Inch OLED Display (Isolate the back side of the OLED display from touching the PCB solder points.)

2x20 pin female header 2.54mm pitch

470 or 680 ohm 1/4watt Resistance (value changes leds brigtness)

2pcs. 10K ohm 1/4watt Resistance

5mm red LED (standart regular)

2pcs. 3 pin 11mm male header 2.54mm pitch

2 pin 11mm male header 2.54mm pitch

3pcs. Jumper cap 2.54mm pitch

EC11 Rotary Encoder

6 PCS. 30cm MALE-FEMALE Dupond Cable

6pin Male Header 2.54mm pitch

12mm 3V Passive Buzzer

Please choose "Edge connector YES and Bevelling Yes (45°)

** If you want to use Pi1541 not inserted to the C64 cartridge port then you need to provide DC +5V power to the Raspberry Pi. (DO NOT CONNECT EXTERNAL POWER SOURCE TO THIS CARTRIDGE WHILE IT IS INSERTED TO C64 ! )

If you have a programmer capable of testing IC chips, such as the 74LS series, you should remember to test them before soldering. Some chips may be defective. (TL866 Minipro Programmer can test some logic ICs)

In order to protect your electronical devices, always turn off your Commodore before connecting or disconnecting the cables or any other device.

While transfering data (reading or writing) from SD cards it should not be interrupted like power-off or Reset systems. Otherwise that may damage SD cards.

Gerber files and component list are subject to change without notice. Before paying for the PCBs, be sure to update your orders!

As you can see I have uploaded many projects and I am still working on new projects. If you have any questions, please look for answers online. Unless I specify explicitly, all my projects are tested and confirmed to work under normal circumstances before being shared. I'm sorry I didn't have enough time to answer all the questions.

Use this PCB at your own risk !

Have fun

Thank you.

C64iSTANBUL