Chi Chi
About the Chi Chi PCB
Chi Chi is an open source AVR/Arduino PCB design by hughminhphan, published on GitHub. It is a 2-layer board measuring 169 × 170 mm, with 100 components from 7 distinct parts.
Its main chip is the ATTINY828R-AUR, from the AVR/Arduino family. Other key parts include the ALS-PT19-315C/L177/TR8. By type, the board carries 48 resistors, 24 modules, 24 diodes, 2 capacitors, 1 IC and 1 connector.
From the project
My projects
Main components on the Chi Chi
Chi Chi bill of materials (BOM)
100 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATTINY828R-AUR | TQFP32_9X9_MCH | U1 |
| 24 | ALS-PT19-315C/L177/TR8 | XDCR_ALS-PT19-315C_L177_TR8 | A1, A2, A3, A4, A5, A6, A7, A8 +16 |
| 1 | SSQ-103-01-T-D | SAMTEC_SSQ-103-01-T-D | J1 |
| 24 | SPMWHT541ML5XATMS6 | LED_SPMWHT541MP5WAPKS4 | D1, D2, D3, D4, D5, D6, D7, D8 +16 |
| 2 | 0.1UF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 24 | 261R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R5, R6, R9, R10, R13, R14 +16 |
| 24 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4, R7, R8, R11, R12, R15, R16 +16 |
Chi Chi design files
The KiCad project lives in the hughminhphan/PROJECTS repository on GitHub; these links point at the commit this page was built from.
Chi Chi: common questions
What microcontroller does the Chi Chi use?
The Chi Chi is built around the ATTINY828R-AUR, from the AVR/Arduino family.
How big is the Chi Chi PCB?
The Chi Chi measures 169 × 170 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Chi Chi?
100 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Chi Chi design files?
From the hughminhphan/PROJECTS repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Chi Chi design in my own project?
The repository has no license, so all rights stay with hughminhphan. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Chi Chi without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
More boards in PROJECTS
Main 4.3 old
133.1 × 97.6 mm144 parts4LNo license0
Line 3.0
206 × 197.4 mm100 parts2LNo license0
AVR/ArduinoMain 3.1
3.2 × 3.2 mm65 parts2LNo license0
ESP32SBRcontroller
113.5 × 60.8 mm23 parts2LNo license0
ESP32SBR2.1
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ESP32SBRLOL
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ESP32Rescue Line V2
61 × 57.3 mm16 parts2LNo license0
Coilgun 1.3 Main Control Board
66 × 55.9 mm10 parts2LNo license0
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