HardLabs

FlashKa main

DomPka·LuxLibre·hardware/flashka-keychain-v06/kicad/FlashKa_main/FlashKa_main.kicad_pcb

FlashKa main PCB layout, top view — open source ESP32 board by DomPka

About the FlashKa main PCB

FlashKa main is an open source ESP32 PCB design by DomPka, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 24 × 16.5 mm, with 68 components from 34 distinct parts.

Its main chip is the ESP32-C3-MINI-1-N4, from the ESP32 family. Other key parts include the TP4057, TLV62585DRLR, TLV333IDCKR and RT9080-33GJ5. By type, the board carries 31 resistors, 17 capacitors, 5 ICs, 4 transistors, 4 switches and 2 LEDs.

It belongs with the power & battery, rf & radio and iot & wireless designs in this gallery.

From the project

FlashKa is LuxLibre reference design #1: a 94.4 × 20 × 16 mm aluminium keychain light. It has a white LED from 2 mA moonlight to a 2.2 A turbo burst, a Class 2 green laser behind a hardware safety switch, USB-C charging, two small LiPo cells (about 800 mAh) and Bluetooth. Version

FlashKa is LuxLibre reference design #1: a 94.4 × 20 × 16 mm aluminium keychain light. It has a white LED from 2 mA moonlight to a 2.2 A turbo burst, a Class 2 green laser behind a hardware safety switch, USB-C charging, two small LiPo cells (about 800 mAh) and Bluetooth. Version 0.6 adds three stainless-steel buttons on the bottom face with a glowing ring around the main one, and a presenter mode: the light becomes a Bluetooth keyboard that turns your slides, and the laser stays the pointer. A web page on a phone or computer shows the battery and switches the light. Firmware is installed…

FlashKa main, from the project README
From the project README

Main components on the FlashKa main

TP4057TLV62585DRLRTLV333IDCKRESP32-C3-MINI-1-N4RT9080-33GJ5

FlashKa main bill of materials (BOM)

68 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TP4057
U1
1
TLV62585DRLR
U2
1
TLV333IDCKR
U3
1
ESP32-C3-MINI-1-N4
U4
1
RT9080-33GJ5
U5
1
AO3401A
Q1
3
2N7002W
Q2, Q4, Q5
1
TYPE-C-31-M-12
J1
1
20mΩ
RS1
1
C77130
100k B4250
RT1
1
MSK12C02
S2
3
SKRKAEE020
SW1, SW2, SW3
2
NH-B1010RGBT-HF
LED3, LED4
1
ESD5Z5.0T1G
D1
1
1UH
1uH
L1
1
10UF
10uF
C1
3
10UF
10uF
C2, C13, C15
2
22UF
22uF
C5, C8
5
100NF
100nF
C7, C10, C16, C19, C20
1
22PF
22pF
C9
Show 14 more
QtyPartRefs
1
10NF
10nF
C11
4
1UF
1uF
C12, C14, C17, C18
2
5.1K
5.1k
R1, R2
1
3.3K
3.3k
R3
7
100K
100k
R7, R11, R15, R17, R20, R26, R29
6
10K
10k
R8, R9, R13, R18, R21, R22
1
200K
200k
R10
1
47K
47k
R12
2
2.2K
2.2k
R14, R31
1
2k
R16
2
1k
R19, R30
2
330Ω
R23, R32
4
100Ω
R24, R25, R33, R34
2
1M
R27, R28

FlashKa main design files

The KiCad project lives in the DomPka/LuxLibre repository on GitHub; these links point at the commit this page was built from.

FlashKa main: common questions

What microcontroller does the FlashKa main use?

The FlashKa main is built around the ESP32-C3-MINI-1-N4, from the ESP32 family.

How big is the FlashKa main PCB?

The FlashKa main measures 24 × 16.5 mm, has 4 copper layers and is 0.8 mm thick.

How many components are on the FlashKa main?

68 components, from 34 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 FlashKa main design files?

From the DomPka/LuxLibre repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the FlashKa main design in my own project?

Yes, under the terms of its GPL-3.0 license, which DomPka chose for the repository.

Can I test firmware for the FlashKa main 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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