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Hw thingcell

GuilleGonzzalez·hw-thingcell

Hw thingcell PCB layout, top view — open source ESP32 board by GuilleGonzzalez

About the Hw thingcell PCB

Hw thingcell is an open source ESP32 PCB design by GuilleGonzzalez, published on GitHub. It is a 4-layer board measuring 32.5 × 67 mm, with 81 components from 36 distinct parts.

Its main chip is the ESP32-S2-SOLO, from the ESP32 family. Other key parts include the AP62301WU-7, SIM868 and CH340C. By type, the board carries 31 resistors, 22 capacitors, 8 connectors, 8 diodes, 5 ICs and 3 transistors.

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

From the project

Firmware used in this device is fw-thingcell, a custom made firmware implemented using Arduino Home Assistant Arduino library (docs).

Firmware used in this device is fw-thingcell, a custom made firmware implemented using Arduino Home Assistant Arduino library (docs).

[Unreleased]: https://github.com/GuilleGonzzalez/hw-thingcell

Main components on the Hw thingcell

AP62301WU-7ESP32-S2-SOLOSIM868CH340C

Hw thingcell bill of materials (BOM)

81 components, 36 distinct parts.

QtyPartRefs
2
AP62301WU-7
U1, U2
1
ESP32-S2-SOLO
U3
1
SIM868
U4
1
CH340C
U5
3
PMBT3904235
Nexperia
Q1, Q2, Q3
1
SC32S-7PF20PPM
32.768k
Y1
2
Conn_01x02_Pin
J1, J2
2
Conn_01x08_Pin
J3, J5
1
USB4510-03-1-A
J4
1
GSM_ANT
J6
1
GNSS_ANT
J7
1
SIM8060-6-0-14-00-A
J8
1
1N4448W-7-F
D1
1
BZT52C5V1-7-F
D2
2
LED
D3, D4
4
D_TVS
D5, D6, D7, D8
2
SRN5020TA-3R3M
3u3
L1, L2
1
27n
L3
3
10u
C1, C2, C15
5
22u
C3, C10, C11, C12, C13
Show 16 more
QtyPartRefs
1
NC
C4
2
12p
C5, C6
5
100n
C7, C8, C9, C21, C22
1
TPSB107K006R0250
100u_tant
C14
1
33p
C16
1
10p
C17
3
22p
C18, C19, C20
7
10k
R1, R3, R5, R7, R13, R14, R18
1
40k
R2
1
31k6
R4
2
5k1
R6, R10
11
1k
R8, R12, R16, R17, R25, R26, R27, R28 +3
2
NC
R9, R11
1
10
R15
3
51
R19, R20, R21
3
5.6k
R22, R23, R24

Hw thingcell design files

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

Hw thingcell: common questions

What microcontroller does the Hw thingcell use?

The Hw thingcell is built around the ESP32-S2-SOLO, from the ESP32 family.

How big is the Hw thingcell PCB?

The Hw thingcell measures 32.5 × 67 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Hw thingcell?

81 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hw thingcell design files?

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

Can I use the Hw thingcell design in my own project?

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

Can I test firmware for the Hw thingcell 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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