HardLabs

H4n2rs485

mwwhited·EmbeddedBakery·circuits/h4n2rs485/h4n2rs485.kicad_pcb

H4n2rs485 PCB layout, top view — open source AVR/Arduino board by mwwhited

About the H4n2rs485 PCB

H4n2rs485 is an open source AVR/Arduino PCB design by mwwhited, published on GitHub under the MIT license. It is a 2-layer board measuring 38.1 × 44.5 mm, with 17 components from 11 distinct parts.

Its main chip is the ATtiny2313-20PU, from the AVR/Arduino family. Other key parts include the L7805 and MAX485E. By type, the board carries 6 resistors, 5 connectors, 3 ICs, 2 transistors and 1 diode.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Collection of arduino, avr and pic projects

- KiCad - Schematic capture and PCB layout - KiBot - Automated documentation generation

Main components on the H4n2rs485

ATtiny2313-20PUL7805MAX485E

H4n2rs485 bill of materials (BOM)

17 components, 11 distinct parts.

QtyPartRefs
1
ATtiny2313-20PU
U1
1
L7805
U2
1
MAX485E
U3
2
BSS138
Q1, Q2
1
AudioJack4
J1
1
AVR-ISP-6
J2
2
Barrel_Jack
J3, J4
1
6P6C
J5
1
LED
D1
4
R 10k
R1, R2, R3, R4
2
R_US
R5, R6

H4n2rs485 design files

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

H4n2rs485: common questions

What microcontroller does the H4n2rs485 use?

The H4n2rs485 is built around the ATtiny2313-20PU, from the AVR/Arduino family.

How big is the H4n2rs485 PCB?

The H4n2rs485 measures 38.1 × 44.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the H4n2rs485?

17 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the H4n2rs485 design files?

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

Can I use the H4n2rs485 design in my own project?

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

Can I test firmware for the H4n2rs485 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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