CHEEP Board
About the CHEEP Board
CHEEP Board is an open source PCB design by esl-epfl, published on GitHub. It is a 6-layer board measuring 17.5 × 23.9 mm, with 32 components from 8 distinct parts.
Other key parts include the HEEPocrates, W25Q128JWYIQ, SN74AUP2G08DQER and SN74AUP1G14DSFR. By type, the board carries 17 capacitors, 9 resistors and 5 ICs.
It belongs with the wearables designs in this gallery.
From the project
Modular hardware platform based on the RISC-V X-HEEP family architecture developed at ESL, targeting ultra-low-power consumption and miniaturization, facilitating the creation of wearable devices for clinical trials
A collection of compact, power-efficient PCB modules designed for rapid prototyping and development of wearable healthcare devices, with a focus on biosignal acquisition.
X-MODs provides a modular hardware approach that bridges the gap between fully custom designs and off-the-shelf solutions. The system consists of four specialized modules and their corresponding debug boards, enabling quick prototyping while maintaining the small form factor required for wearable applications.
Main components on the CHEEP Board
CHEEP Board bill of materials (BOM)
32 components, 8 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HEEPocrates | HEEPocrates | U1 |
| 1 | W25Q128JWYIQ | WLCSP-21 | U2 |
| 2 | SN74AUP2G08DQER ~ | X2SON-8 | U3, U4 |
| 1 | SN74AUP1G14DSFR ~ | X2SON-6 | U5 |
| 1 | SIT1532AC-J5-DCC-32.768D | SIT1532AC | OSC1 |
| 17 | GRM155R71A104JA01D 100n 10V | C0402 | C1, C2, C3, C4, C5, C6, C7, C8 +9 |
| 7 | CRCW040210K0FKEDHP 10K0 | R0402 | R1, R2, R3, R4, R5, R6, R7 |
| 2 | CRCW0402100KFKEDC 100K | R0402 | R8, R9 |
CHEEP Board design files
The KiCad project lives in the esl-epfl/X-MODs repository on GitHub; these links point at the commit this page was built from.
CHEEP Board: common questions
How big is the CHEEP Board?
The CHEEP Board measures 17.5 × 23.9 mm, has 6 copper layers and is 0.8 mm thick.
How many components are on the CHEEP Board?
32 components, from 8 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 CHEEP Board design files?
From the esl-epfl/X-MODs 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 CHEEP Board design in my own project?
The repository has no license, so all rights stay with esl-epfl. Use it as a reference, and ask the author before reusing the design.
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