A tiny, SMT version of Little Wire
Designed by 42_red_herrings in United KingdomThis product is no longer available for sale.
The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.
Notice: I am no longer actively making these, so the product is retired. But if you are really interested in getting one, do get in touch. My take on the classic Little Wire USB stick: surface mount…
Read More…Notice: I am no longer actively making these, so the product is retired. But if you are really interested in getting one, do get in touch.
My take on the classic Little Wire USB stick: surface mounted parts, as small and flat as possible, with an option for 3.3V operation, and optionally a micro or mini USB connector. Comes with micronucleus bootloader, so it is programmable via USB; and with Little Wire firmware, so it can act as an AVR ISP programmer out of the box (well, envelope).
It is hand-soldered (by me).
Little Wire is an AVR board with attiny85 at its heart, capable of (bit-banged) USB communication. It can be used as an AVR ISP programmer, but also to talk to other chips via I2C or just a general GPIO, using a PC-side C or Ruby library.
The idea is not new - the basic schematic + VUSB library, popularised by Little Wire, has been adopted by some successful projects: DigiSpark, Adafruit Trinket, as well as some perhaps less well-known ones like picoDuino and USBasp-t.
The design of this board is directly inspired by the latter two. The main features (that make it different from the above boards) are:
The default option is for one little²wire board with only the top side populated (i.e. 5V operation only, a piece of plastic glued on the bottom for isolation and proper thickness).
The 3V3 option adds the bottom side voltage parts (still with 5V selected by the solder jumper - let me know if you want 3.3V selected), still with a plastic strip.
The mini USB option adds a mini USB connector on the bottom.
See the photos above!
PB1
pin of the attiny (green colour).Chandler's Ford, Hampshire, United Kingdom
Ships from United Kingdom.
4 Reviews | 38 Orders
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