HardLabs

Handystick

kjoller·handystick

Handystick PCB layout, top view — open source AVR/Arduino board by kjoller

About the Handystick PCB

Handystick is an open source AVR/Arduino PCB design by kjoller, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 19.1 × 45 mm, with 24 components from 16 distinct parts.

Its main chip is the ATMEGA328P-A, from the AVR/Arduino family. By type, the board carries 6 capacitors, 6 resistors, 4 connectors, 3 diodes, 2 switches and 1 IC.

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

From the project

A small Atmega88 (or similar) devboard with a focus for vUSB applications.

HandyStick is yet another small development board with an AtmegaX8 (Atmega88, Atmega168, Atmega328). The board is targeted towards use with vUsb, a software implemented USB stack.

It is cheap to manufacture, fitting two on a cheap 5x5cm 2-layer pcb, and using easy-to-source parts.

Using projects like USBAspLoader, you can get a USB programmable AVR board for less than $3 in parts. You can use this for USB HID-devices, such as joysticks, gamepads or even a full-featured MAME cabinet USB dataloggers For more ideas, see the vUSB web site.

Main components on the Handystick

ATMEGA328P-A

Handystick bill of materials (BOM)

24 components, 16 distinct parts.

QtyPartRefs
1
ATMEGA328P-A
IC1
1
12MHz
X1
1
AVR-ISP-6
CON1
1
USB-MINI-B
CON2
1
CONN_12
P1
1
CONN_12
P2
1
P***
1PIN
2
SW_PUSH
SW1, SW2
1
LED
D1
2
ZENER
D2, D3
3
100nF
C1, C2, C3
2
10pF
C4, C5
1
10uF
C6
2
10K
R1, R2
2
2.2K
R3, R6
2
68R
R4, R5

Handystick design files

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

Handystick: common questions

What microcontroller does the Handystick use?

The Handystick is built around the ATMEGA328P-A, from the AVR/Arduino family.

How big is the Handystick PCB?

The Handystick measures 19.1 × 45 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Handystick?

24 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Handystick design files?

From the kjoller/handystick repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Handystick design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which kjoller chose for the repository.

Can I test firmware for the Handystick 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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