HardLabs

Tiny PWM

marceloh220·Tiny_PWM·kiCAD/Tiny_PWM.kicad_pcb

Tiny PWM PCB layout, top view — open source AVR/Arduino board by marceloh220

About the Tiny PWM PCB

Tiny PWM is an open source AVR/Arduino PCB design by marceloh220, published on GitHub under the MIT license. It is a 2-layer board measuring 85.1 × 40.6 mm, with 19 components from 14 distinct parts.

Its main chip is the ATtiny45V-10P, from the AVR/Arduino family. Other key parts include the L78L05_TO92. By type, the board carries 4 resistors, 3 connectors, 3 diodes, 2 ICs, 2 transistors and 2 capacitors.

From the project

Dual channel PWM driver controller. For LEDs, motors and other strangers things.

Fusebits: - Low: 0x62 - High: 0xDC - Extended: 0xFF

https://blog.zakkemble.net/avr-gcc-builds/

Include the bin directory on system path

sudo apt install gcc-avr avr-libc binutils-avr

sudo dnf install avr-gcc avr-libc avr-binutils

sudo pacman -S avr-gcc avr-libc avr-binutils

Main components on the Tiny PWM

ATtiny45V-10PL78L05_TO92

Tiny PWM bill of materials (BOM)

19 components, 14 distinct parts.

QtyPartRefs
1
ATtiny45V-10P
U1
1
L78L05_TO92
U2
2
IRLZ44N
Q1, Q2
1
Power_IN
J1
1
OUT0
J2
1
OUT1
J3
1
OUT0
RV1
1
OUT1
RV2
1
Function
SW1
3
1N5820
D1, D2, D3
1
100uf
C1
1
100n
C2
2
10k
R1, R4
2
470
R2, R3

Tiny PWM design files

The KiCad project lives in the marceloh220/Tiny_PWM repository on GitHub; these links point at the commit this page was built from.

Tiny PWM: common questions

What microcontroller does the Tiny PWM use?

The Tiny PWM is built around the ATtiny45V-10P, from the AVR/Arduino family.

How big is the Tiny PWM PCB?

The Tiny PWM measures 85.1 × 40.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tiny PWM?

19 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tiny PWM design files?

From the marceloh220/Tiny_PWM repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Tiny PWM design in my own project?

Yes, under the terms of its MIT license, which marceloh220 chose for the repository.

Can I test firmware for the Tiny PWM 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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