2 layers

Genesis

Genesis Board design

Copper layers: 2
Thickness: 1.6 mm
Parts: 98
Nets: 112
Pads: 454
Tracks, vias: 0, 0
Routed: Not yet
KiCad: KiCad 9.0 (file 20241229)
Created: 27 Apr 2025
Updated: 18 Jun 2025

Overview

Genesis is an open-source printed circuit board by iffycodes, from the iffycodes/Genesis repository on GitHub. It is a 2-layer board with 98 parts on 112 nets.

It is built around the 74AHC1G125GW, PCF8523T and W5500, with the MBR540DS, RB1-125BAG1A and CR1220-2 among its other parts. Its parts include 31 resistors, 27 capacitors, 6 crystals, 5 ICs and 3 diodes. It belongs with the ESP32 and RISC-V boards of this library.

Main components

README

README.md

Genesis

Genesis Board design

Change history

Removed Stemma QT connectors. Left second LDO (AP2112-3.3). It looks to only be powering the neopixel on GPIO0. Need to figure out if I can just use the main one.
Removed voltage divider used for LiPo monitoring. Provided A13_I35 that went to I35 on the ESP.
Removed LiPo charging circuit. VBUS is now only supplied by USB-C connector. Removed DMG3415U transistor in upper left of Page 2. Removed JST battery connector.
Removed extra reset switches.
Add initial annotation.
Rename +3V3 net on RTC page to match 3.3V global net name.
Rename MISO nets on Ethernet page so global MISO net can go to buffer
Remove second LDO. Power Neopixel from main regulator.
Start adding heirarchical labels. Add notes to check sub-feather jumpers.
Remove feather headers and ESP model from ETH and RTC pages.

Parts

Qty	Value	Footprint	References
6	0.1uF	Adafruit Ethernet FeatherWing:0603-NO	C15, C16, C18, C19, C20, C21
6	10K	Adafruit Ethernet FeatherWing:0603-NO	R15, R18, R19, R20, R21, R28
4	47K	Adafruit ESP32 Feather V2:RESPACK_4X0603	R2, R10, R11, R12
4	49.9	Adafruit Ethernet FeatherWing:0603-NO	R23, R24, R25, R26
3	10K	Adafruit ESP32 Feather V2:RESPACK_4X0603	R4, R5, R7
3	10uF	Adafruit Ethernet FeatherWing:0805-NO	C13, C17, C22
3	10uF	Adafruit ESP32 Feather V2:0805-NO	C3, C5, C6
3	1uF	Adafruit ESP32 Feather V2:0603-NO	C4, C7, C9
3	5.1K	Adafruit ESP32 Feather V2:0603-NO	R6, R8, R9
3	FIDUCIAL""	Adafruit Ethernet FeatherWing:FIDUCIAL_1MM	FID1, FID2, FID3
3	SOLDERJUMPERREFLOW_NOPASTE	Adafruit Ethernet FeatherWing:SOLDERJUMPER_REFLOW_NOPASTE	SJ1, SJ2, SJ3
2	0.1uF	Adafruit ESP32 Feather V2:0603-NO	C8, C10
2	100K	Adafruit ESP32 Feather V2:0603-NO	R1, R3
2	10K	adalogger featherwing:0603-NO	R31, R32
2	10nF	Adafruit Ethernet FeatherWing:0603-NO	C24, C25
2	10uF	adalogger featherwing:0805-NO	C27, C28
2	10µF	Adafruit ESP32 Feather V2:0805-NO	C1, C2
2	22pF	Adafruit Ethernet FeatherWing:0603-NO	C12, C14
2	470	Adafruit Ethernet FeatherWing:0603-NO	R16, R17
2	6.8nF	Adafruit Ethernet FeatherWing:0603-NO	C23, C26
2	DUAL NPN	Adafruit ESP32 Feather V2:SOT363	Q1, Q2
2	FIDUCIAL_1MM	adalogger featherwing:FIDUCIAL_1MM	FID4, FID5
2	FIDUCIAL_1MM	Adafruit ESP32 Feather V2:FIDUCIAL_1MM	U$1, U$2
2	HEADER-1X1ROUND	adalogger featherwing:1X01_ROUND	INT1, SDCS1
2	KMR2	Adafruit ESP32 Feather V2:BTN_KMR2_4.6X2.8	SW1, SW2
2	MOUNTINGHOLE2.5	Adafruit ESP32 Feather V2:MOUNTINGHOLE_2.5_PLATED	U$3, U$4
2	ferrite	Adafruit Ethernet FeatherWing:0805-NO	FB1, FB2
1	10	Adafruit Ethernet FeatherWing:0603-NO	R27
1	100K	adalogger featherwing:0603-NO	R30
1	12.4K	Adafruit Ethernet FeatherWing:0603-NO	R22
1	1K	adalogger featherwing:0603-NO	R29
1	1M	Adafruit Ethernet FeatherWing:0603-NO	R14
1	25MHz	Adafruit Ethernet FeatherWing:CRYSTAL_3.2X2.5	Y1
1	32khz	adalogger featherwing:CRYSTAL_8X3.8	Y2
1	74AHC1G125	Adafruit Ethernet FeatherWing:SOT23-5L	IC2
1	AP2112-3.3	Adafruit ESP32 Feather V2:SOT23-5	U1
1	CP2102N-24	Adafruit ESP32 Feather V2:QFN24_4MM_SMSC	IC1
1	ESP32-PICO-MINI-02MINI	Adafruit ESP32 Feather V2:ESP32-PICO-MINI	X1
1	HEADER-1X12	Adafruit ESP32 Feather V2:1X12_ROUND	JP1
1	HEADER-1X16ROUND	Adafruit ESP32 Feather V2:1X16_ROUND	JP2
1	HEADER-1X376MIL	Adafruit Ethernet FeatherWing:1X03_ROUND_76	JP5
1	MBR540	Adafruit ESP32 Feather V2:SOD-123	D1
1	PCF8523T	adalogger featherwing:SOIC8_150MIL	IC3
1	RB1-125BAG1A	Adafruit Ethernet FeatherWing:RJ45_PULSEJACK	X3
1	RED	Adafruit ESP32 Feather V2:CHIPLED_0603_NOOUTLINE	D2
1	SOLDERJUMPERCLOSED	Adafruit Ethernet FeatherWing:SOLDERJUMPER_CLOSEDWIRE	SJ4
1	SOLDERJUMPER_CLOSED	adalogger featherwing:SOLDERJUMPER_CLOSEDWIRE	SJ5
1	USB Type C	Adafruit ESP32 Feather V2:USB_C_CUSB31-CFM2AX-01-X	X2
1	W5500	Adafruit Ethernet FeatherWing:LQFP48	U2
1	WS2812B3535	Adafruit ESP32 Feather V2:LED3535	LED1
1	cr1220	adalogger featherwing:CR1220-2	B1
1	microsd	adalogger featherwing:MICROSD	X4

Questions

What parts does the Genesis use?

98 parts, built around the 74AHC1G125GW, PCF8523T, W5500 and MBR540DS. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Genesis KiCad files?

From the iffycodes/Genesis repository on GitHub, at the commit this page was made from: the board is rev1/Genesis/Genesis.kicad_pcb and its schematic kicad-import/adafruit-datalogger/adalogger featherwing.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Genesis design in my own project?

Its repository states no licence, so its author keeps all rights: ask iffycodes before reusing the design.

Category and platform

ESP32 RISC-V

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/iffycodes-genesis-genesis" title="Genesis in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/iffycodes-genesis-genesis.jpg" alt="Genesis" width="1200" height="900">

A picture that opens the board, for a README

[![Genesis](https://pcbkit.io/embed/boards/iffycodes-genesis-genesis.jpg?size=s)](https://pcbkit.io/boards/iffycodes-genesis-genesis)

Source

Repository: iffycodes/Genesis
Board file: rev1/Genesis/Genesis.kicad_pcb
Commit: 33ec147
Licence: Not stated

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