Free PCB Sunday: Infrared receiver transmitter

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is another prototype PCB for the USB infrared remote control receiver/transmitter. Unlike the earlier prototype, this version uses a USB mini-B jack. Unlike the final PCB, it doesn’t have a transistor to power the IR LED with greater than 20mA. The IR receiver is connected to a single interrupt pin, the receiver on the final version of the IR Toy connects to an additional interrupt pin with a Schmitt trigger for better noise immunity.

You can get an assembled USB IR Toy for $20, including worldwide shipping.

We’re giving away two PCBs this week. Just ask for it in the comments.

Some stuff:

• Yes, we’ll mail it anywhere in the world!
• Be sure to use a real e-mail in the address field so we can contact you for shipping info.
• First come, first serve. If we can’t contact the first commenters we move down the list, so you could consider making a request even if it looks like all the PCBs are gone.
• Please, limit one PCB per address per month.
• Like everything else on this site, PCBs are offered without warranty.

We try to stagger free PCB Sunday posts so every time zone has a chance to participate, but the best way to see the post first is to subscribe to the RSS feed.