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Single sampler pcb v2

DNAir-AG·single-sampler-pcb-v2

This repository ships a schematic but no board layout.

About the Single sampler pcb v2

Single sampler pcb v2 is an open source ESP32 PCB design by DNAir-AG, published on GitHub. It is a board, with 44 components from 28 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. Other key parts include the TLV62569DBV, AP2112K-3.3 and CH340C. By type, the board carries 13 capacitors, 9 resistors, 8 connectors, 4 ICs, 4 switches and 4 diodes.

It belongs with the rf & radio and sensors designs in this gallery.

From the project

PCB v2 layout files for DNAir Single Sampler — KiCad schematic, BOM, JLCPCB-ready design

KiCad schematic and design files for the v2 PCB of the DNAir Single Sampler environmental air monitoring device.

This board replaces the v1 prototype PCB (breakout modules + Dupont cables) with a single integrated PCB designed for JLCPCB turnkey assembly. Key changes from v1:

- ESP32-WROOM-32E-N4 bare module (replaces DevKit) - AO3400A N-MOSFET fan driver (replaces relay) - On-board GPS (ATGM336H-5N31 + u.FL antenna connector) - Micro-SD socket directly on PCB - JST-XH connectors for all external sensors (SDP810, SHT35, DS3231 RTC, fan) - Single 3.3V rail via TLV62569 buck + AP2112K LDO -…

Main components on the Single sampler pcb v2

ESP32-WROOM-32ETLV62569DBVAP2112K-3.3CH340C

Single sampler pcb v2 bill of materials (BOM)

44 components, 28 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32E
U1
1
TLV62569DBV
U2
1
AP2112K-3.3
U3
1
CH340C
U4
1
AO3400A
Q1
1
XT60_Battery
J1
1
USB-C
J2
1
FAN_JST
J3
1
SDP810
J4
1
SHT35
J5
1
DS3231_RTC
J6
1
Micro_SD
J7
1
GPS_MODULE
J8
1
BOOT
SW1
1
RESET
SW2
1
BUTTON
SW3
1
WIFI_SW
SW4
3
SS14
D1, D2, D3
1
LED_Green
D4
1
4.7uH
L1
Show 8 more
QtyPartRefs
8
100nF
C1, C4, C7, C8, C9, C10, C11, C13
2
22uF
C2, C3
2
1uF
C5, C6
1
10uF
C12
5
10k
R1, R3, R7, R8, R9
1
100R
R2
2
4.7k
R4, R5
1
330R
R6

Single sampler pcb v2 design files

The KiCad project lives in the DNAir-AG/single-sampler-pcb-v2 repository on GitHub; these links point at the commit this page was built from.

Single sampler pcb v2: common questions

What microcontroller does the Single sampler pcb v2 use?

The Single sampler pcb v2 is built around the ESP32-WROOM-32E, from the ESP32 family.

How many components are on the Single sampler pcb v2?

44 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the Single sampler pcb v2 design files?

From the DNAir-AG/single-sampler-pcb-v2 repository on GitHub, which has the schematic and a netlist; the links under Design files point to each one.

Can I use the Single sampler pcb v2 design in my own project?

The repository has no license, so all rights stay with DNAir-AG. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Single sampler pcb v2 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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