|
|||||||||||||||||||||
|
|||||||||||||||||||
[로봇사이언스몰][Pololu][폴로루] A-Star 32U4 Mini LV #3103
A-Star Programmer Controllers 비교표 보러가기
The A-Star 32U4 Mini LV is a programmable module based on the ATmega32U4 from Microchip (formerly Atmel). Unlike competing products, it has an onboard switching step-up/step-down regulator that allows it to be powered efficiently from a 2.7 V to 11.8 V supply. This compact 1.9″ × 0.7″ board breaks out all 26 of the microcontroller’s I/O pins (of which 7 can be used as PWM outputs and 12 as analog inputs), and loading programs is made easier by a Micro-USB interface and a preloaded Arduino-compatible bootloader.
Overview
A robust power selection circuit enables seamless transitions between regulator power and USB power, and overcurrent and reverse-voltage protection help safeguard the board against accidental damage.
All 26 general-purpose I/O lines on the ATmega32U4 are accessible on the A* 32U4 Mini; 7 of these are usable as PWM outputs and 12 are usable as analog inputs. The board measures 1.9″ × 0.7″, the same size as an Arduino Micro, and features a pair of mounting holes sized for #2 or M2 screws (not included). Its 0.1″ pin spacing makes the A* easy to use with solderless breadboards, perfboards, and 0.1″-pitch connectors.
Our comprehensive user’s guide provides the basics you need to get started with the A-Star as well as detailed technical information for advanced users.
This product requires a USB A to Micro-B cable (not included) to connect to a computer.
This version, the A-Star Mini LV, can be powered from a 2.7 V to 11.8 V external source. The input voltage is regulated to 5 V by a TPS63061 switching step-up/step-down (buck-boost) converter from Texas Instruments. (We also make a standalone regulatorbased on this integrated circuit.)
The regulator’s flexibility in input voltage is especially well-suited for battery-powered applications in which the battery voltage begins above 5 V and drops below 5 V as the battery discharges. Without the typical restriction on the battery voltage staying above 5 V throughout its life, a wider range of battery types can be considered. For example:
As shown in the left graph below, the LV’s switching regulator has an efficiency – defined as (Power out)/(Power in) – of 80% to 90% for most combinations of input voltage and load.
The A-Star’s components, including the microcontroller and LEDs, draw 30 mA to 40 mA in typical applications. The rest of the regulator’s achievable output current, which depends on input voltage as well as ambient conditions, can be used to power other devices. The right graph above shows output currents at which the voltage regulator’s over-temperature protection typically kicks in after a few seconds. These currents represent the limit of the regulator’s capability and cannot be sustained for long periods; under typical operating conditions, a safe limit for the maximum continuous regulator output current is 60% to 70% of the values shown in the graph.
The A-Star 32U4 ships with a preloaded Arduino-compatible bootloader (which uses 4 KB of flash memory, leaving 28 KB available for the user program). We provide a software add-on that enables the board to be easily programmed from the Arduino environment.
The A-Star 32U4 Mini boards use the same microcontroller as the Arduino Leonardo and Arduino Micro and run at the same frequency, and they are the same size as the Arduino Micro, but they offer a number of advantages over these other ATmega32U4-based boards. Most notably, their efficient switching regulators cover a wide range of input voltages, opening up new possibilities for powering projects built around Arduino-compatible microcontroller boards. Another advantage is the power selection circuit based on the TPS2113A power multiplexer from Texas Instruments, which allows safe, seamless power switching between USB and an external source without losses from passive components like fuses or diodes along with the ability to monitor and control the selected power source. Additionally, the A* 32U4 Mini breaks out a few additional pins from the ATmega32U4 microcontroller that are not exposed on the Arduino Micro or Leonardo, and it features larger, more convenient mounting holes than the Arduino Micro.
This diagram identifies the I/O and power pins on the A-Star 32U4 Mini (even though it shows the ULV version, it applies to all three A-Star Mini boards); it is also available as a printable PDF (269k pdf). For more information about the ATmega32U4 microcontroller and its peripherals, see Microchip’s ATmega32U4 documentation.
Printed on the A* circuit board are indicators that you can use to quickly identify each pin’s capabilities: a triangle next to the pin means it can be used as an analog input, and a square wave symbol under the pin number means it can be used as a PWM output.
The A-Star 32U4 Mini can either be powered directly from the USB 5 V supply or from an external voltage source, which is regulated to 5 V by its onboard regulator, and the board’s power selection circuit enables automatic, uninterrupted transitions between the two power sources. When the A-Star is powered through an external power supply connected to the BAT+ and BAT- pins, its reverse-voltage protection circuit helps prevent it from being damaged by accidentally-reversed power connections, and the VIN pin can be used as an output to supply reverse-protected power to other devices. Alternatively, the external supply can be connected directly between VIN and GND, bypassing the reverse-voltage protection.
The A-Star 32U4 user’s guide discusses the board’s features in more detail.
A pair of 1×17-pin breakaway 0.1″ male headers is included with the A-Star 32U4 Micro, which can be soldered in to use the board with perfboards, breadboards, or 0.1″ female connectors. Also included is a 2×3 header that can be installed to allow external programming of the microcontroller through the AVR ISP interface, such as with our USB AVR programmer. The board has two mounting holes that work with #2 and M2 screws (not included).
Size: | 0.7″ × 1.95″ × 0.23″1 |
---|---|
Weight: | 3.4 g2 |
Processor: | ATmega32U4 @ 16 MHz |
---|---|
RAM size: | 2560 bytes |
Program memory size: | 32 Kbytes3 |
Motor channels: | 0 |
User I/O lines: | 26 |
Input voltage range: | 2.7 V to 11.8 V (LV) |
Minimum operating voltage: | 2.7 V |
Maximum operating voltage: | 11.8 V |
Maximum output current: | 1.5 A4 |
Logic voltage: | 5 V |
Reverse voltage protection?: | Y5 |
External programmer required?: | N |
User’s manual for the Pololu A-Star 32U4 family of user-programmable boards.
This library allows you to control an arbitrary number of SK6812/WS281x-Based Addressable RGB LEDs from an Arduino.
b. 해외상품 :
1) 해당상품: 아이콘이 부착된 상품
2) 구매금액 700,000원 이상 : 입금확인 후 최소 5일 ~ 최대 2주
3) 구매금액 700,000원 이하 : 입금확인 후 최소 1주 ~ 최대 8주
4) 단, 해외계약업체에 품절되지 않은 상품에 한함
② 구매상품 종류가 많을 경우 예상 준비기간 보다 더 소요 될 수 있습니다.
③ 주문하신 상품은 출고완료 메일 또는 문자 수신 후 익일~최대7일(도서,산간지역)
이내에 수령하실 수 있습니다.
④ 제주(\3,500원)/도서지역(\5,000원)은 배송비가 추가됩니다.
제주,도서, 산간지역은 타 지역보다 배송기간이 길어질 수 있습니다.
⑤ 아이콘이 부착된 상품이라도 국내재고가 있을 수 있습니다.
⑥ 해외 현지 사정으로 인해 공지한 배송기간보다 더 길어 질 수 있습니다.
⑦ 해외상품은 반품/교환/취소가 어려울 수 있으니 신중히 주문하시기 바랍니다.
3. 소비자의 단순변심/착오구매에 의한 청약철회제한안내
① 전자상거래 등에서의 소비자보호에 관한 법률 제17조 제2항 및 동 시행령
제21조에 의한 청약철회 제한 사유에 해당하는 경우 및 기타 객관적으로
이에 준하는 것으로 인정되는 경우에 한합니다.
② 소비자의 단순변심, 착오구매에 의한 교환/반품 시에 발생하는 배송비는
소비자가 부담합니다.
③ 판매자의 실수,제품하자 등의 사유로 인한 배송비는 판매자가 부담합니다.
4. 상품의 교환/반품/보증조건 및 품질보증기준안내
① 상품이 공급된 날(배송완료일)로부터 7일 이내에 교환/반품을 신청 할 수 있습니다.
그러나 아래의 사유에 해당 하는 경우에는 교환/반품 신청이 받아들여지지 않을 수도 있습니다.
a. 소비자의 책임으로 인해 상품이 훼손/멸실 된 경우(확인을 위한 포장훼손제외)
b. 소비자의 사용에 의해 상품의 가치가 현저하게 감소한 경우
c. 시간의 경과로 인해 상품의 재판매가 불가하게 된 경우
d. 판매방식의 특성으로 판매자에게 회복할 수 없는 피해가 발생한 경우 (주문제작 상품, 청약철회상품 등)
② 교환/반품/보증조건 및 품질보증기준은 『소비자기본법』에 따른 소비자분쟁해결기준에 따라 피해를 보상합니다.
5. 소비자피해보상 처리, 재화 등에 대한 불만 및 분쟁처리 안내
판매자 | 본사 | 셀러등급 | |
---|---|---|---|
상호명 | (주)위키모바일(로봇사이언스몰) | 대표자 | 김경식 |
사업자등록번호 | 215-87-14086 | 통신판매신고번호 | 제2008-서울송파-0867호 |
연락처 | 02-2283-1300 | 사업장 소재지 | 서울특별시 송파구 문정동 643-1 엠스테이트 B동704호 |
| ||||||||||||||||||||||||||
쇼핑몰이용안내 | |
전자계약사이트 | |
|
|||||||||
회사명 : (주)위키모바일(로봇사이언스몰)
| 사업자등록번호 : 215-87-14086 [사업자정보확인]
| 주소 : 서울특별시 송파구 법원로 114 엠스테이트 B동704호 통신판매업 신고 : 제2008-서울송파-0867호 | 연락처 : 02-2283-1300 | FAX : 02-2283-1304 | 개인정보보호 책임자 : 김 경식 | 대표자 : 김경식 호스팅사업자 : 가비아 퍼스트몰 | contact : ask@wikimobile.co.kr for more information *로봇사이언스몰의 콘텐츠 저작권은 (주)위키모바일에 있으며 무단·전재·복사 배포를 금합니다. |
|||||||||