HardLabs

OM-FlexGrid-Flex

Open-Muscle·OpenMuscle-FlexGrid·KiCad/OM-FlexGrid V4/OM-FlexGrid-Flex/OM-FlexGrid-Flex.kicad_pcb

OM-FlexGrid-Flex PCB layout, top view — open source board by Open-Muscle
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About the OM-FlexGrid-Flex PCB

OM-FlexGrid-Flex is an open source PCB design by Open-Muscle, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 285.5 × 118 mm, with 61 components from 2 distinct parts.

By type, the board carries 60 jumpers and 1 connector.

It belongs with the sensors and wearables designs in this gallery.

From the project

60-sensor wearable with flexible PCB and pressure matrix

Unboxing & Setup: assembling the FlexGrid V4 walks through hand-soldering the parts JLCPCB does not populate (ESP32-S3 module, CD74HC4067 mux, ZIF/FFC connector, USB-C, buttons, RGB LED), the USBLC6 180-degree rotation fix, and first power-on with the flex sensor mated. The microSD socket and haptic parts are deferred to a future video.

For people who want to review the design without opening KiCad:

OM-FlexGrid-Flex bill of materials (BOM)

61 components, 2 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CONN_01X08_PIN
Conn_01x20
J1
60
Jumper_2_Open
JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8 +52

OM-FlexGrid-Flex design files

The KiCad project lives in the Open-Muscle/OpenMuscle-FlexGrid repository on GitHub; these links point at the commit this page was built from.

OM-FlexGrid-Flex: common questions

How big is the OM-FlexGrid-Flex PCB?

The OM-FlexGrid-Flex measures 285.5 × 118 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OM-FlexGrid-Flex?

61 components, from 2 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 OM-FlexGrid-Flex design files?

From the Open-Muscle/OpenMuscle-FlexGrid 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 OM-FlexGrid-Flex design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Open-Muscle chose for the repository.

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