Love FLORA but want a bite-sized version? Look no further, GEMMA is a tiny wearable platform board with a lot of might in a 1" diameter package. Powered by a Attiny85 and programmable with an Arduino IDE over USB, you'll be able to realize any wearable project!
We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your Flora and you aren't willing to take apart the project you worked so hard to design. It's our lowest-cost sewable controller!
NEW In version 2!On March 4, 2015 we released Version 2, which is physically and code-wise identical but haschanged the Mini-B connection for a Micro-BUSB connector and adds a much-requestedOn-Off switch!
The Attiny85 is a fun processor because despite being so small, it has 8K of flash, and 5 I/O pins, including analog inputs and PWM 'analog' outputs. We designed a USB bootloader so you can plug it into any computer and reprogram it over a USB port just like an Arduino (it uses 2 of the 5 I/O pins, leaving you with 3). In fact we even made some simple modifications to the Arduino IDE so that it works like a mini-Flora. Perfect for small & simple projects the GEMMA will be your go-to wearable electronics platform.
Even though you can program GEMMA using the Arduino IDE, it's not a fully 100% Arduino-compatible. There are some things you trade off for such a small and low cost microcontroller!
GEMMA does not have a Serial port connection for debugging so the serial port monitor will not be able to send/receive data
Some computers' USB v3 ports don't recognize the GEMMAs bootloader. Simply use a USB v2 port or a USB hub in between
Here are some useful specifications!
Super small, only 1.1" / 28mm diameter and 0.28" / 7mm thick.
Easy-to-sew or solder pads for embedding in your wearable project
Low cost enough, you can use one for every weekend project
ATtiny85 on-board, 8K of flash, 512 byte of SRAM, 512 bytes of EEPROM
Internal oscillator runs at 8MHz
Ultra low power, draws only 9 mA while running
USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with the Arduino IDE (with a few simple config modifications)
Micro-USB jack for power and/or USB uploading, you can put it in a box or tape it up and use any USB cable for when you want to reprogram.
We really worked hard on the bootloader process to make it rugged and foolproof
~5.25K bytes available for use (2.75K taken for the bootloader)
On-board 3.3V power regulator with 150mA output capability and ultra-low dropout. Up to 16V input, reverse-polarity protection, thermal and current-limit protection.
Power with either USB or external output (such as a battery) - it'll automatically switch over
On-board green power LED and red pin #1 LED
Reset button for entering the bootloader or restarting the program.
3 GPIO - The 3 independent IO pins have 1 analog input and 2 PWM output as well.
Hardware I2C capability for breakout & sensor interfacing.
01. 결제(입금완료)완료 후 2-3일이내에 상품을 수령하실 수 있습니다.
02. 재고가 없거나 다시 재입고 될 경우(예약상품, 구두포함) 5-7일이 소요됩니다.
03. 배송비는 5만원 이상 구매시 무료 5만원 미만 구매시 2500원의 배송료가 있습니다.
교환/반품시 반드시 확인해주세요.
반품은 반드시 정해진 택배사를 이용해주세요.
반드시 고객센터나 게시판을 통해 반품의사를 알려주신 후 제품을 보내주셔야 합니다.
연락없이 보내실경우 반품 및 교환이 불가능합니다.
반품 및 교환에 대한 자세한 사항은 아래의 내용을 참고해주세요.
교환/반품이 불가능한 경우입니다.
제품을 받으신 후 일주일 이내에 교환, 반품신청을 하지 않았을 경우
고객님의 부주의로 인한 상품이 변형, 훼손 또는 파손 된 경우 제품이 오염되었을 경우
(립스틱, 화장품, 음식물 기타 오염물질로 인해) 제품을 착용 및 사용하거나, 제품의 택(라벨)이 제거 했거나,
제품을 수선, 수리, 세탁하였을 경우
반품 불가로 표기 된 상품을 구매한 경우 (니트류, 화이트계열, 세일상품 등)
반품 의사를 통보하지 않고 반품한 경우