HardLabs

Multical eye

slimcdk·multical-eye·electronics/driver-board.kicad_pcb

Multical eye PCB layout, top view — open source ESP32 board by slimcdk

About the Multical eye PCB

Multical eye is an open source ESP32 PCB design by slimcdk, published on GitHub under the MIT license. It is a 4-layer board measuring 38.5 × 39.6 mm, with 59 components from 27 distinct parts.

Its main chip is the ESP32-C6-MINI-1/U, from the ESP32 family. Other key parts include the LMR16006YQ3, AMS1117-3.3, TMC5240-TSSOP38 and AS5047D. By type, the board carries 24 capacitors, 12 resistors, 7 connectors, 5 ICs, 4 jumpers and 4 diodes.

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

From the project

ESP32 [ESPHome] IR eye for Kamstrup MultiCal meters

Revisions are controlled through git tags such any production easily can be traced back to a commit containing everything. Complete sets of compatible schematics, PCB layouts, documentations, 3D models etc will all stay together under same tag in the source history.

https://www.kicad.org/ https://www.freecadweb.org/ https://github.com/features/actions https://github.com/INTI-CMNB/KiBot https://code.visualstudio.com/ https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers

Main components on the Multical eye

LMR16006YQ3AMS1117-3.3ESP32-C6-MINI-1/UTMC5240-TSSOP38AS5047D

Multical eye bill of materials (BOM)

59 components, 27 distinct parts.

QtyPartRefs
1
LMR16006YQ3
U1
1
AMS1117-3.3
U2
1
ESP32-C6-MINI-1/U
U3
1
TMC5240-TSSOP38
U5
1
AS5047D
U7
1
Conn_01x02
J1
2
Conn_01x03
J2, J7
1
Qwiic_RA
J4
1
Conn_01x02
J5
1
Conn_01x04
J6
1
USB_C_Receptacle_USB2.0
J10
4
Jumper_2_Open
JP1, JP2, JP3, JP4
2
SW_Push
SW1, SW2
1
WS2812B
D1
2
LESD5D5
D2, D6
1
DS210W
D4
1
6.8µH
L1
1
100nF
C1
5
1µF
C2, C7, C8, C13, C14
9
100nF
C3, C9, C11, C12, C16, C17, C19, C23 +1
Show 7 more
QtyPartRefs
2
2.2µF
C4, C10
4
10µF
C5, C6, C20, C21
2
33µF
C15, C18
1
22nF
C22
9
10k
R1, R2, R6, R8, R9, R10, R12, R13 +1
2
5k1
R3, R5
1
12k
R7

Multical eye design files

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

Multical eye: common questions

What microcontroller does the Multical eye use?

The Multical eye is built around the ESP32-C6-MINI-1/U, from the ESP32 family.

How big is the Multical eye PCB?

The Multical eye measures 38.5 × 39.6 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Multical eye?

59 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Multical eye design files?

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

Can I use the Multical eye design in my own project?

Yes, under the terms of its MIT license, which slimcdk chose for the repository.

Can I test firmware for the Multical eye 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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