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PCBmain

MagnusLab·Magnus-qPCR·Hardware/KiCad/PCBmain/PCBmain.kicad_pcb

PCBmain PCB layout, top view — open source ESP32 board by MagnusLab
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About the PCBmain PCB

PCBmain is an open source ESP32 PCB design by MagnusLab, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 112 × 48.8 mm, with 63 components from 33 distinct parts.

Its main chip is the ESP32-WROOM-32_M103QH3200PH3Q0_, from the ESP32 family. Other key parts include the CP2102, NCP1117ST33T3G, TMC2208-LA-T, PAM2804AAB010 and TMP117AIDRVT. By type, the board carries 23 resistors, 16 capacitors, 7 ICs, 6 connectors, 4 transistors and 3 diodes.

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

From the project

An open, portable and low cost qPCR machine.

This machine is a work in progress, so the specifications may change and/or be innacurate. Also, don't try to replicate it if you don't know what you're doing, as it probably won't work until we release a stable version.

The main PCB, containing the microcontroller and the heater; The PCB of the reading head, containing LEDs and light sensors; * The optical reading head, which will house lenses, beam splitters, filters, prisms, etc., as well as the stepper motor responsible for positioning this optical assembly above each tube;

PCBmain, from the project README
From the project README

Main components on the PCBmain

CP2102NCP1117ST33T3GESP32-WROOM-32_M103QH3200PH3Q0_TMC2208-LA-TPAM2804AAB010TMP117AIDRVT

PCBmain bill of materials (BOM)

63 components, 33 distinct parts.

QtyPartRefs
1
CP2102
IC1
1
NCP1117ST33T3G
IC2
1
ESP32-WROOM-32_M103QH3200PH3Q0_
IC3
1
TMC2208-LA-T
IC4
2
PAM2804AAB010
IC5, IC6
1
TMP117AIDRVT
IC7
1
IRLML6244TRPBF
Q1
2
S8050
Q2, Q3
1
Q_NMOS_GDS
Q4
1
47346-0001
J1
1
DM3D-SF
J2
1
fan
J3
1
OPT3002
J4
1
LEDambar
J6
1
LEDazul
J7
2
SW_Push
SW1, SW2
1
D_Schottky_Small
D1
2
LED
D2, D3
2
4,7µH
L1, L2
6
10µF
C1, C3, C5, C6, C7, C8
Show 13 more
QtyPartRefs
4
100nF
C2, C11, C13, C15
1
100µF 6.3V
C4
1
100µF
C9
1
22nF 50V
C10
1
100nF 16V
C12
1
2.2µF 6.3V
C14
1
0.1µF
C16
13
10k
R1, R2, R4, R5, R6, R8, R15, R16 +5
4
1k
R3, R7, R10, R11
1
4.7k
R9
2
?
R12, R13
2
200
R14, R21
1
Heater
R23

PCBmain design files

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

PCBmain: common questions

What microcontroller does the PCBmain use?

The PCBmain is built around the ESP32-WROOM-32_M103QH3200PH3Q0_, from the ESP32 family.

How big is the PCBmain PCB?

The PCBmain measures 112 × 48.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PCBmain?

63 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the PCBmain design files?

From the MagnusLab/Magnus-qPCR repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the PCBmain design in my own project?

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

Can I test firmware for the PCBmain 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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