HardLabs

Toadstool-Mega328

CrashBangProto·Toadstool-Mega328·Schematics/toadstool mega328.kicad_pcb

Toadstool-Mega328 PCB layout, top view — open source AVR/Arduino board by CrashBangProto

About the Toadstool-Mega328 PCB

Toadstool-Mega328 is an open source AVR/Arduino PCB design by CrashBangProto, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 49.5 × 81.2 mm, with 26 components from 24 distinct parts.

Its main chip is the ATMEGA328P-P, from the AVR/Arduino family. Other key parts include the LD1117. By type, the board carries 9 relays, 5 capacitors, 5 resistors, 2 ICs, 2 diodes and 1 connector.

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

From the project

Toadstool Development Board - ATmega328P

Toadstool Development Board - ATmega328P

The Toadstool family is made up of breadboard-friendly prototyping boards that house a microcontroller, and modules called Caps that connect using a standard header. The prototyping board is analagous to an Arduino/Launchpad and the Cap analagous to a shield/boosterpack.

This repository contains the schematics for the Toadstool-Mega328 prototyping board, a breadboard-friendly PCB that houses the ATmega328P microcontroller (or other Atmel pin-compatible variants such as the ATmega8/48/88/168/328).

Toadstool-Mega328, from the project README
From the project README

Main components on the Toadstool-Mega328

ATMEGA328P-PLD1117

Toadstool-Mega328 bill of materials (BOM)

26 components, 24 distinct parts.

QtyPartRefs
1
ATMEGA328P-P
IC1
1
LD1117
U1
1
BARREL_JACK
CON1
1
750mA
F1
1
CAP_CONN_LHS
K1
1
CAP_CONN_RHS
K2
1
V-SELECT
K3
1
ICSP
K4
1
PIN 2-8
K5
1
PIN 21-28
K6
1
XTAL
K7
1
PIN 15-19
K8
1
PIN 11-14
K9
1
RESET
SW1
1
DIODE
D1
1
PWR
D2
2
10uF
C1, C2
2
22pF
C3, C4
1
100nF
C5
1
R330
R1
Show 4 more
QtyPartRefs
1
120R
R2
1
200R
R3
1
360R
R4
1
10k
R5

Toadstool-Mega328 design files

The KiCad project lives in the CrashBangProto/Toadstool-Mega328 repository on GitHub; these links point at the commit this page was built from.

Toadstool-Mega328: common questions

What microcontroller does the Toadstool-Mega328 use?

The Toadstool-Mega328 is built around the ATMEGA328P-P, from the AVR/Arduino family.

How big is the Toadstool-Mega328 PCB?

The Toadstool-Mega328 measures 49.5 × 81.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Toadstool-Mega328?

26 components, from 24 distinct parts. The full bill of materials is listed on this page.

Where can I download the Toadstool-Mega328 design files?

From the CrashBangProto/Toadstool-Mega328 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Toadstool-Mega328 design in my own project?

Yes, under the terms of its GPL-3.0 license, which CrashBangProto chose for the repository.

Can I test firmware for the Toadstool-Mega328 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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