HardLabs

KeyGridProto

dczia·Defcon26-Badge·Hardware/KeyGridProto/KeyGridProto.kicad_pcb

KeyGridProto PCB layout, top view — open source ESP32 board by dczia

About the KeyGridProto PCB

KeyGridProto is an open source ESP32 PCB design by dczia, published on GitHub under the Unlicense license. It is a 2-layer board measuring 100 × 100 mm, with 70 components from 11 distinct parts.

Its main chip is the ESP32_OLED, from the ESP32 family. By type, the board carries 33 diodes, 16 switches, 16 capacitors, 4 connectors and 1 IC.

It belongs with the iot & wireless, wearables and displays & leds designs in this gallery.

From the project

DCZia DEFCON 26 KeyGrid Badge - 2018

News September 2021 Added new pre built binary file of the badge firmware with bug fixes for the boot loop issue. (Thanks to Aask for the guidance!) Updated final software readme and this readme.

August 2018 FINAL INO is up use that for use with the final board. ProtoDos is frozen for now. Library changes + board layout changes mean Final and Dos aren't really interchangable.

Main components on the KeyGridProto

ESP32_OLED

KeyGridProto bill of materials (BOM)

70 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32_OLED
U1
1
320010003
Ext Power
J1
1
LED Power Select
J2
1
320090008
Key Debug
J3
1
LED Debug
J4
16
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +8
1
304020034
D_ALT
D1
15
D_ALT
D2, D3, D4, D5, D6, D7, D8, D9 +7
16
304020034
LED_RGBW_SK6812
D17, D18, D19, D20, D21, D22, D23, D24 +8
1
304020034
5.1v
D33
16
302010165
0.1uF
C1, C2, C3, C4, C5, C6, C7, C8 +8

KeyGridProto design files

The KiCad project lives in the dczia/Defcon26-Badge repository on GitHub; these links point at the commit this page was built from.

KeyGridProto: common questions

What microcontroller does the KeyGridProto use?

The KeyGridProto is built around the ESP32_OLED, from the ESP32 family.

How big is the KeyGridProto PCB?

The KeyGridProto measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KeyGridProto?

70 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the KeyGridProto design files?

From the dczia/Defcon26-Badge repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the KeyGridProto design in my own project?

Yes, under the terms of its Unlicense license, which dczia chose for the repository.

Can I test firmware for the KeyGridProto without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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