HardLabs

Chipsat v1

noellayang·chipsat-v1·hardware/chipsat_v1.kicad_pcb

Chipsat v1 PCB layout, top view — open source ESP32 board by noellayang

About the Chipsat v1 PCB

Chipsat v1 is an open source ESP32 PCB design by noellayang, published on GitHub under the MIT license. It is a 2-layer board measuring 45.5 × 46 mm, with 59 components from 27 distinct parts.

Its main chip is the ESP32-C3-MINI-1-N4, from the ESP32 family. Other key parts include the INA219AIDCNR, AP2112K-3.3TRG1, BQ25185DLHR, VEML7700-TR and ICM-42688-P. By type, the board carries 22 resistors, 20 capacitors, 9 ICs, 3 connectors, 2 switches and 2 diodes.

It belongs with the rf & radio, iot & wireless and power & battery designs in this gallery.

From the project

Custom ESP32-C3 power-management testbed for small satellite firmware experiments

ChipSat v1 is a custom 45mm x 45mm PCB I built to test how firmware power-management decisions affect the actual current draw of a small satellite-style system. It was developed alongside my power budget work for the Duke Solar Sail project.

The goal was not to reproduce flight hardware exactly. Instead, I wanted a physical testbed where I could keep the hardware fixed and measure how much the power draw changed as I switched between different firmware schedules.

Chipsat v1, from the project README
From the project README

Main components on the Chipsat v1

INA219AIDCNRAP2112K-3.3TRG1BQ25185DLHRVEML7700-TRICM-42688-PESP32-C3-MINI-1-N4USBLC6-2SC6

Chipsat v1 bill of materials (BOM)

59 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
INA219AIDCNR
Texas Instruments
U2, U6
2
AP2112K-3.3TRG1
Diodes Inc.
U3, U8
1
BQ25185DLHR
Texas Instruments
U4
1
VEML7700-TR
Vishay Intertech
U5
1
ICM-42688-P
TDK InvenSense
U7
1
ESP32-C3-MINI-1-N4
ESP32-C3-MINI-1
Espressif Systems
U9
1
USBLC6-2SC6
STMicroelectronics
U10
1
12402012E212A
USB-C
Amphenol ICC
J1
2
B2B-XH-A(LF)(SN)
Conn_01x02
JST
J4, J5
1
25121WF360JT4E
36R
R_LOAD1
2
EVQP7A01P
EVQ-P7A01P
PANASONIC
S1, S2
1
SS14
MDD(Microdiode Semiconductor)
D1
1
KT-0603R
LED
Hubei KENTO Elec
D2
4
CL21A106KPFNNNE
10µF
Samsung Electro-Mechanics
C1, C6, C14, C21
7
CL10A105KP8NNNC
1µF
Samsung Electro-Mechanics
C2, C4, C9, C13, C15, C17, C25
6
CL10B104KB8NNNC
100nF
Samsung Electro-Mechanics
C3, C5, C8, C10, C16, C20
2
CL21A225KPFNNNE
2.2µF
Murata Electronics
C11, C18
1
CL10B103KB8NNNC
10nF
Samsung Electro-Mechanics
C12
2
0603WAF5101T5E
5.1k
UNI-ROYAL(Uniroyal Elec)
R1, R2
8
0603WAF1002T5E
10k
UNI-ROYAL(Uniroyal Elec)
R3, R7, R10, R13, R14, R16, R17, R20
Show 7 more
QtyPartRefs
1
0603WAF3001T5E
3k
UNI-ROYAL(Uniroyal Elec)
R4
2
RE1206F1R100
0.1R
jieerrui
R5, R9
1
0603WAF1802T5E
18k
UNI-ROYAL(Uniroyal Elec)
R6
1
RC0603FR-071KL
1K
YAGEO
R8
4
0603WAF4701T5E
4.7K
UNI-ROYAL(Uniroyal Elec)
R11, R12, R21, R22
1
0603WAF4702T5E
47k
UNI-ROYAL(Uniroyal Elec)
R15
2
0603WAF220JT5E
22R
UNI-ROYAL(Uniroyal Elec)
R18, R19

Chipsat v1 design files

The KiCad project lives in the noellayang/chipsat-v1 repository on GitHub; these links point at the commit this page was built from.

Chipsat v1: common questions

What microcontroller does the Chipsat v1 use?

The Chipsat v1 is built around the ESP32-C3-MINI-1-N4, from the ESP32 family.

How big is the Chipsat v1 PCB?

The Chipsat v1 measures 45.5 × 46 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chipsat v1?

59 components, from 27 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 Chipsat v1 design files?

From the noellayang/chipsat-v1 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 Chipsat v1 design in my own project?

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

Can I test firmware for the Chipsat v1 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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