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Esphome nfc

aeremin·firefly_zephyr·hardware/esphome-nfc/esphome-nfc.kicad_pcb

Esphome nfc PCB layout, top view — open source ESP32 board by aeremin
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About the Esphome nfc PCB

Esphome nfc is an open source ESP32 PCB design by aeremin, published on GitHub. It is a 4-layer board measuring 68.3 × 41 mm, with 43 components from 23 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the PN7160A1HN/C100Y, AP2112K-3.3TRG1 and USBLC6-2P6. By type, the board carries 21 capacitors, 11 resistors, 4 ICs, 2 inductors, 1 crystal and 1 buzzer.

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

From the project

(--pristine can be omitted if previous build used same subfolder, it basically means "clean, non-incremental build")

(--pristine can be omitted if previous build used same subfolder, it basically means "clean, non-incremental build")

This repo contains sources to build following firmware images:

Both of the services can be used by dedicated Android app. App sources are here. Battery measurement. Will continously monitor battery voltage and Report it via bluetooth - see above. * Will disable radio and LED (will keep Bluetooth enabled) if battery level is low.

Main components on the Esphome nfc

ESP32-C3-WROOM-02PN7160A1HN/C100YAP2112K-3.3TRG1USBLC6-2P6

Esphome nfc bill of materials (BOM)

43 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3-WROOM-02
U1
1
PN7160A1HN/C100Y
U2
1
AP2112K-3.3TRG1
U3
1
USBLC6-2P6
U4
1
CRYSTAL_GND24
Crystal_GND24
Y1
1
Buzzer
BZ1
1
TS-1187A-B-A-B
XKB Connectivity(中国星坤)
SW1
1
KH-TYPE-C-16P
USB2
1
C2297
0805G (Green)
KENTO
LED1
2
160 nH
L1, L2
2
4.7 uF
C1, C3
2
100 nF
C2, C7
5
1.0 uF
C4, C12, C13, C21, C22
4
2.2 uF
C5, C6, C8, C9
2
12 pF
C10, C11
2
330 pF
C15, C16
2
75 pF
C17, C18
2
150 pF
C19, C20
2
5.1K
R1, R2
4
10K
10k
R3, R4, R5, R6
Show 3 more
QtyPartRefs
1
100R
R7
2
2R0
R9, R10
2
2.2K
R11, R12

Esphome nfc design files

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

Esphome nfc: common questions

What microcontroller does the Esphome nfc use?

The Esphome nfc is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the Esphome nfc PCB?

The Esphome nfc measures 68.3 × 41 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Esphome nfc?

43 components, from 23 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 Esphome nfc design files?

From the aeremin/firefly_zephyr 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 Esphome nfc design in my own project?

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

Can I test firmware for the Esphome nfc 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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