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Parallel_to_ESP32

A parallel to ESP32 project for the Amiga


This carrier board is made to host the popular ESP32-DEVKIT-V1 board widely available for a few bucks on AliExpress and the likes. Powering the board can be done by taking +5V from the Amigas external floppy drive port using an Adapter and connect to the DEVKIT's Micro-USB jack.

A FileServer firmware is being developed and is available here:
https://github.com/jbilander/ESP32-FileServer




Revision 1A




BOM Rev. 1A

Designator Name/Value Package Notes
U1 ESP32-DEVKIT-V1 DIP-30 Please note tested variant is Type/Color:
ESP32-CP2102-MICRO
U2 SN74CB3T16210DGGR TSSOP-48 SN74CB3T16210DGGR
J1 D-Sub DB25 Male connector EdgeMount, parallel port connector solder type D-Sub DB25M
J2 Sunrom Micro SD Card Holder 9-pin Micro SD card slot connector Sunrom Micro-SD card holder
J3 PinHeader 2x02 EdgeMount, PinHeader_2x02_P2.54mm UART1 connector PADs with 3V3/GND Power connectors on the underside for external powering a RS-232 device or similar from the ESP32
J4 PinHeader 2x02 EdgeMount, PinHeader_2x02_P2.54mm UART2 connector PADs with 3V3/GND Power connectors on the underside for external powering a RS-232 device or similar from the ESP32
R1 ~150 Ω Resistor 0805, 200 mW (Mandatory if D1 populated) Series resistor for D1 LED, adjust R-value to your type of LED and preferred brightness
R2 ~150 Ω Resistor 0805, 200 mW (Mandatory if D2 populated) Series resistor for D2 LED, adjust R-value to your type of LED and preferred brightness
R3,R4,R6,R7 LED Resistor 1k Ω 0603 RC0603FR-071KL
R5 Resistor 10k or 4.7k Ω 0603 Pull-up resistor for Card Present/Detect, signal grounded when card is present in socket
R8 Resistor 4.7k Ω or 10k Ω 0603 Pull-up resistor (on 5V side) for /STROBE-signal
RC0603FR-074K7L
RN1-RN3 CAY16-4701F4LF Resistor pack 4.7k or 10k Ω (CAY16-103J4LF) 1206 CAY16-4701F4LF Optional Pull-up resistors for Signals: ACK,BUSY,POUT,SELECT,Data0-Data7
D1 (Optional) LED 3mm PinHeader_1x02_P2.54mm_Vertical, pin pitch 2.54 mm Activity LED indicator (Diffused Orange / Amber or whatever colour you prefer)
D2 (Optional) LED 3mm PinHeader_1x02_P2.54mm_Vertical, pin pitch 2.54 mm Power LED indicator (Green Diffused or whatever colour you prefer)
D3-D6 SMD LED 0603 SMD LED 0603
C1-C4 Capacitor 0.1uF = 100nF 0805
JP1 (Optional) PinHeader 1x02 PinHeader_1x02_P2.54mm_Vertical Shunt on to enable reset ESP32 in conjunction with Ctrl-Amiga-Amiga, Please Note pressing the RESET-button on the ESP32 will also assert the Amiga-RESET, be careful, know what you're doing if you enable this one.