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VhARIO-ESPC3

har-in-air·VhARIO-ESPC3

VhARIO-ESPC3 PCB layout, top view — open source board by har-in-air
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About the VhARIO-ESPC3 PCB

VhARIO-ESPC3 is an open source PCB design by har-in-air, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 74 × 34 mm, with 52 components from 29 distinct parts.

Other key parts include the CJMCU117, MCP73831-2-OT, ESPC3FN4, 74HC240PWR and TLV75533PDBV. By type, the board carries 16 resistors, 15 capacitors, 6 diodes, 5 ICs, 2 transistors and 2 connectors.

It belongs with the audio, power & battery and usb & debug tools designs in this gallery.

From the project

Kicad schematic and layout for ESP32-C3 + MPU9250 + MS5611 audio vario

Kicad 6 circuit schematic and PCB layout for an audio variometer using ESP32-C3 and CJMCU-117 IMU modules. The vario uses a Kalman filter to fuse acceleration data and pressure altitude data for 'zero-lag' response. You can find the firmware project here.

2-layer PCB sized for Hammond 1551K 80x40x20 mm enclosure.

ESP32-C3 flash and debug via built-in USB serial jtag peripheral.

VhARIO-ESPC3, from the project README
From the project README

Main components on the VhARIO-ESPC3

CJMCU117MCP73831-2-OTESPC3FN474HC240PWRTLV75533PDBV

VhARIO-ESPC3 bill of materials (BOM)

52 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CJMCU117
cjmcu117
U1
1
MCP73831-2-OT
U2
1
ESPC3FN4
espc3fn4
U3
1
74HC240PWR
U4
1
TLV75533PDBV
U5
1
AO3401A
Q1
1
2N7002
Q2
1
USB_C
J1
1
Battery
J2
1
KPEG006
BZ1
1
NSMD100-16
nSMD100-16
F1
1
DBG
JP1
1
DBG
SW2
1
CHRG
D2
1
PWR
D3
3
BV03C
D4, D6, D7
1
1N5819WS
D5
2
GZ2012D601TF
L1, L2
7
100N
100n
C1, C2, C3, C9, C10, C11, C13
2
22u 16V
C4, C5
Show 9 more
QtyPartRefs
1
1u
C6
2
100U
100u
C7, C8
3
22U
22u
C12, C14, C15
8
10K
R1, R8, R10, R11, R12, R13, R15, R16
2
5K1 1%
R2, R3
1
2K
R4
2
2K7
R5, R7
1
2K2
R6
2
2K2
R9, R14

VhARIO-ESPC3 design files

The KiCad project lives in the har-in-air/VhARIO-ESPC3 repository on GitHub; these links point at the commit this page was built from.

VhARIO-ESPC3: common questions

How big is the VhARIO-ESPC3 PCB?

The VhARIO-ESPC3 measures 74 × 34 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the VhARIO-ESPC3?

52 components, from 29 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 VhARIO-ESPC3 design files?

From the har-in-air/VhARIO-ESPC3 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 VhARIO-ESPC3 design in my own project?

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

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