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3ch pwm sao badge

9a·3ch_pwm_sao_badge·sao_kicad_files/sao_pcb.kicad_pcb

3ch pwm sao badge PCB layout, top view — open source AVR/Arduino board by 9a

About the 3ch pwm sao badge PCB

3ch pwm sao badge is an open source AVR/Arduino PCB design by 9a, published on GitHub. It is a 2-layer board measuring 28 × 15.8 mm, with 18 components from 10 distinct parts.

Its main chip is the ATTINY402-SS, from the AVR/Arduino family. By type, the board carries 9 resistors, 3 transistors, 3 connectors, 2 capacitors and 1 IC.

It belongs with the wearables designs in this gallery.

From the project

A sao compatible 3ch PWM mini badge for LEDs/LED noodles using a attiny402

In Arduino IDE: deactivate millis() in the "tools" section

3ch pwm sao badge, from the project README
From the project README

Main components on the 3ch pwm sao badge

ATTINY402-SS

3ch pwm sao badge bill of materials (BOM)

18 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATTINY402-SS
ATtiny402-SS
U1
3
2N7002
Q1, Q2, Q3
1
CONN_02X03_ODD_EVEN
Conn_02x03_Odd_Even
J1
1
CONN_02X03_ODD_EVEN
Conn_02x03_Odd_Even
J2
1
CONN_01X03
Conn_01x03
J4
1
100N
100n
C1
1
4.7U
4.7u
C2
3
22R
22
R1, R2, R3
4
10K
10k
R4, R7, R8, R9
2
0R
R5, R6

3ch pwm sao badge design files

The KiCad project lives in the 9a/3ch_pwm_sao_badge repository on GitHub; these links point at the commit this page was built from.

3ch pwm sao badge: common questions

What microcontroller does the 3ch pwm sao badge use?

The 3ch pwm sao badge is built around the ATTINY402-SS, from the AVR/Arduino family.

How big is the 3ch pwm sao badge PCB?

The 3ch pwm sao badge measures 28 × 15.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 3ch pwm sao badge?

18 components, from 10 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 3ch pwm sao badge design files?

From the 9a/3ch_pwm_sao_badge 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 3ch pwm sao badge design in my own project?

The repository has no license, so all rights stay with 9a. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the 3ch pwm sao badge 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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