X-A4U: a programmable USB stick (PCB only)

Name: X-A4U: a programmable USB stick (PCB only)
SKU: 5298
Price: 3.50 USD
Availability: Discontinued
Rating: 4.75 (1 reviews)

(1 Review)

A small USB stick with ATxmega (128A4U), microSD socket and a RGB LED

Designed by 42_red_herrings in United Kingdom

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X-A4U: a programmable USB stick (PCB only) 1

X-A4U: a programmable USB stick (PCB only) 2

X-A4U: a programmable USB stick (PCB only) 3

2016-03-24T08:43:14.909Z-x-a4u-r2-top-angle.jpg

2016-03-24T08:43:14.909Z-x-a4u-r2-bottom.jpg

A small USB stick with ATxmega (128A4U), microSD socket and a RGB LED

This listing is for a PCB for my X-A4U stick. Please see the main listing for the info, more photos, BOM and description. Note that some parts can be omitted from the build, but as a very bare minimu…

This listing is for a PCB for my X-A4U stick.

Please see the main listing for the info, more photos, BOM and description.

Note that some parts can be omitted from the build, but as a very bare minimum you'll need (that is, if you don't need the microSD card, RGB LED and are willing to just use a wire for shorting to operate the buttons):

ATxmega128A4U in TQFP-48 package.
USB A through-hole connector.
MCP1703-3.3V in SOT-89 package.
Some ceramic capacitors: 1206 22uF and 0805 1uF for the voltage regulator; 4x 0805 0.1uF for the MCU (it might also work without these, but not recommended).
Note: with this bare minimum, you'll need to bridge the footprint for the fuse and the footprint for the ferrite bead (either with a wire or just a solder bridge).
A PDI programmer to flash the bootloader to the xmega.

Since I have some surplus of bare PCBs for the stick, I decided to offer it separately as well.

Note: This listing is for PCB only, the photos show also the populated stick.

Quantity	Price
1-9	$3.50
10+	$3.00

Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (5.00)

Shipping: (5.00)

Communication: (4.00)

Kang | Feb. 15, 2019

It's a very useful product.

After 19 days of ordering, I received 5 PCBs safely. However, it is relatively good delivery considering the shipment from England to South Korea by ordinary mail. And it is very useful with few products that can test xmega-A4U series. The quality of the PCB was good and the parts to be assembled were readily available. Thank you very much. I'll buy it again if necessary.