2 layers229.9 × 111.8 mm
2 layers49.5 × 49.5 mm
Si7021-attiny
cellularmitosis/lab-logger1A USB-based temperature / humidity logger, based on a Si7021 breakout board.
- Size
- 49.5 × 49.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 17
- Pads
- 82
- Tracks, vias
- 107, 2
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 13 Jun 2017
- Updated
- 27 Jul 2022
Overview
Si7021-attiny is an open-source printed circuit board by cellularmitosis, from the cellularmitosis/lab-logger repository on GitHub, published under the MIT licence. It is a 2-layer board of 49.5 × 49.5 mm with 29 parts on 17 nets, routed with 107 tracks and 2 vias.
It is built around the FT230XS-R. Its parts include 11 capacitors, 5 resistors, 3 ICs, 1 diode and 1 connector. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdlab-logger
A USB-based temperature / humidity logger, based on a Si7021 breakout board.
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1uF | CERCAP_15_059B_0805 | C1, C4, C5, C8, C9, C10, C11 |
| 4 | Val** | hole_M3 | H***, H***, H***, H*** |
| 2 | 1k | R_AXIAL_0W25_059A_PL | R2, R3 |
| 2 | 33R | R_AXIAL_0W25_059A_PL | R4, R5 |
| 2 | 47pF | CERCAP_15_059B_0805 | C6, C7 |
| 1 | 10nF | CERCAP_15_059B_0805 | C3 |
| 1 | 10uF | ELCAP_10_20_V_059A | C2 |
| 1 | 220 | R_AXIAL_0W25_059A_PL | R1 |
| 1 | ATTINY85-P | DIP8_059A_PL | IC1 |
| 1 | BEAD | FERRITE_AXIAL_03_069A | FB1 |
| 1 | EVENT | 1825910-6 | EVENT |
| 1 | FT230XS | SSOP-16 | U1 |
| 1 | LED | LED_3MM_069A | D1 |
| 1 | OSHW-logo_silkscreen-front_4mm | OSHW-logo_silkscreen-front_4mm | G*** |
| 1 | RESET | 1825910-6 | RESET |
| 1 | SI7021-BREAKOUT | SIL-4 | U2 |
| 1 | USB_B | USB_B | J1 |
Questions
How big is the Si7021-attiny PCB?
It measures 49.5 × 49.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Si7021-attiny use?
29 parts, built around the FT230XS-R. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Si7021-attiny KiCad files?
From the cellularmitosis/lab-logger repository on GitHub, at the commit this page was made from: the board is kicad/Si7021-attiny.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Si7021-attiny design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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