Usb bracelet
About the Usb bracelet PCB
Usb bracelet is an open source AVR/Arduino PCB design by NB6RULES, published on GitHub. It is a 2-layer board measuring 204 × 26.5 mm, with 14 components from 11 distinct parts.
Its main chip is the ATtiny85-20S, from the AVR/Arduino family. By type, the board carries 5 resistors, 3 connectors, 3 diodes, 1 IC, 1 switch and 1 capacitor.
Main components on the Usb bracelet
Usb bracelet bill of materials (BOM)
14 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATtiny85-20S | SOIC-8_5.3x5.3mm_P1.27mm | U1 |
| 2 | PinHeader_01x01_P2.54mm_Vertical_THT_D1.4mm | PinHeader_01x01_P2.54mm_Vertical_THT_D1.4mm | J1, J2 |
| 1 | Conn_USB_A_Plain | Conn_USB_A_Plain | P1 |
| 1 | Switch_Tactile_CUIDevices | Button_CUIDevices_TS04-66-43-BK-260-SMT_6.0x6.0mm | SW1 |
| 1 | LED_1206 | LED_1206 | D1 |
| 2 | Diode_Zener_SOD123 | SOD-123 | D2, D3 |
| 1 | C_1206 | C_1206 | C1 |
| 2 | 68 OHM | R_1206 | R1, R2 |
| 1 | 0 ohm | R_1206 | R3 |
| 1 | 100 Ohm | R_1206 | R4 |
| 1 | 1k Ohm | R_1206 | R5 |
Usb bracelet design files
The KiCad project lives in the NB6RULES/Nadec-Biju-Fabacademy-Files repository on GitHub; these links point at the commit this page was built from.
Usb bracelet: common questions
What microcontroller does the Usb bracelet use?
The Usb bracelet is built around the ATtiny85-20S, from the AVR/Arduino family.
How big is the Usb bracelet PCB?
The Usb bracelet measures 204 × 26.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Usb bracelet?
14 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the Usb bracelet design files?
From the NB6RULES/Nadec-Biju-Fabacademy-Files repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Usb bracelet design in my own project?
The repository has no license, so all rights stay with NB6RULES. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Usb bracelet 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.
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