HardLabs

Mk2Wifi

FredM67·PVRouter-KiCad·expansion_boards/mk2Wifi-C3/mk2Wifi.kicad_pcb

Mk2Wifi PCB layout, top view — open source ESP32 board by FredM67

About the Mk2Wifi PCB

Mk2Wifi is an open source ESP32 PCB design by FredM67, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 51 × 24.2 mm, with 23 components from 13 distinct parts.

Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the AP2112K-3.3. By type, the board carries 11 resistors, 4 connectors, 4 capacitors, 2 ICs, 1 switch and 1 diode.

It belongs with the iot & wireless designs in this gallery.

From the project

Module d’extension WiFi/BLE pour la carte principale Mk2 PV Router.

Module d’extension WiFi/BLE pour la carte principale Mk2 PV Router.

La carte mk2Wifi ajoute une connectivité sans fil au Mk2 PV Router grâce à un module ESP32-C3-MINI-1 (RISC-V simple cœur, WiFi 4, Bluetooth LE 5). Elle se branche directement sur la carte principale via les connecteurs TRIGEXT et UARTEXT, et est alimentée en +5 V par la carte principale, régulé localement en +3,3 V.

Mk2Wifi, from the project README
From the project README

Main components on the Mk2Wifi

ESP32-C3-MINI-1AP2112K-3.3

Mk2Wifi bill of materials (BOM)

23 components, 13 distinct parts.

QtyPartRefs
1
ESP32-C3-MINI-1
U1
1
AP2112K-3.3
U2
1
TRIG_EXT
J0
1
USB_C_Receptacle_USB2.0_16P
J2
1
UART_EXT
J3
1
OLED
J4
1
SW_Push
SW1
1
LED
D1
2
100n
C1, C4
2
4u7
C2, C5
3
10K
R1, R3, R4
6
1K
R2, R5, R6, R7, R8, R9
2
5K1
R10, R11

Mk2Wifi design files

The KiCad project lives in the FredM67/PVRouter-KiCad repository on GitHub; these links point at the commit this page was built from.

Mk2Wifi: common questions

What microcontroller does the Mk2Wifi use?

The Mk2Wifi is built around the ESP32-C3-MINI-1, from the ESP32 family.

How big is the Mk2Wifi PCB?

The Mk2Wifi measures 51 × 24.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mk2Wifi?

23 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mk2Wifi design files?

From the FredM67/PVRouter-KiCad repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mk2Wifi design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which FredM67 chose for the repository.

Can I test firmware for the Mk2Wifi 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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