HardLabs

RGB Blinky Keychain

rhitvik·RGB_Blinky_Keychain·Schematic_and_PCB/ledFlasherCircuit.kicad_pcb

RGB Blinky Keychain PCB layout, top view — open source AVR/Arduino board by rhitvik
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About the RGB Blinky Keychain PCB

RGB Blinky Keychain is an open source AVR/Arduino PCB design by rhitvik, published on GitHub under the MIT license. It is a 2-layer board measuring 50.8 × 49.5 mm, with 16 components from 13 distinct parts.

Its main chip is the ATTINY10-TS8R, from the AVR/Arduino family. Other key parts include the APFA2507LQBDSEEZGKC. By type, the board carries 7 resistors, 3 ICs, 2 switches, 2 diodes, 1 battery holder and 1 capacitor.

From the project

These are the blinky boards that NYU sent as the welcome gifts for the class of 2024. This RGB Blinky board features RGB breathing lights, PCB Art and doubles as a soldering practice kit. 1600 of these are manufactured in total. NYU is planning to have these boards manufactured f

These are the blinky boards that NYU sent as the welcome gifts for the class of 2024. This RGB Blinky board features RGB breathing lights, PCB Art and doubles as a soldering practice kit. 1600 of these are manufactured in total. NYU is planning to have these boards manufactured for the class of 2025 and 2026 as well.

Note 1: USE FUSE SETTING 0xFE AFTER UPLOADING THE CODE (this disables the Reset pin and lets it be used as GPIO)

RGB Blinky Keychain, from the project README
From the project README

Main components on the RGB Blinky Keychain

ATTINY10-TS8RAPFA2507LQBDSEEZGKC

RGB Blinky Keychain bill of materials (BOM)

16 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATTINY10-TS8R
U1
2
APFA2507LQBDSEEZGKC
U2, U3
1
BK-883
BT1
1
JS202011SCQN
S1
1
KMR421GULCLFS
Button
S2
2
XLUG12D
Green
D1, D2
1
C1206C104M5RACTU
C1
1
RC1206FR-072K2L
R1
1
RC1206FR-07470RL
R2
1
RC1206FR-07220RL
R3
1
RC1206FR-0710KL
10k
R4
1
RC1206FR-071KL
1k
R5
2
SFR2500001000FR500
100
R6, R7

RGB Blinky Keychain design files

The KiCad project lives in the rhitvik/RGB_Blinky_Keychain repository on GitHub; these links point at the commit this page was built from.

RGB Blinky Keychain: common questions

What microcontroller does the RGB Blinky Keychain use?

The RGB Blinky Keychain is built around the ATTINY10-TS8R, from the AVR/Arduino family.

How big is the RGB Blinky Keychain PCB?

The RGB Blinky Keychain measures 50.8 × 49.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RGB Blinky Keychain?

16 components, from 13 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 RGB Blinky Keychain design files?

From the rhitvik/RGB_Blinky_Keychain repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the RGB Blinky Keychain design in my own project?

Yes, under the terms of its MIT license, which rhitvik chose for the repository.

Can I test firmware for the RGB Blinky Keychain 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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