Kris Winer has combined a span of Arduino programmable Cortex M4F growth play that entirely support a Arduino IDE around USB connections.
The Butterfly and Ladybug STM32L4 play have been designed to be easy to module nonetheless yield high performance, low-power embedded solutions, says creator. Specifications of a Arduino programmable Cortex M4F Development Boards embody :
• Microcontroller: STM32L4 ARM Cortex M4F
• Clock speed: 1, 2, 4, 8, 16, 24, 32, 48, 64, 80 MHz
• Operating voltage: 3.3V
• I/O pin limits: many pins 5.0 V tolerant, 20 mA
• Digital I/O pins: 22, with 11 PWM (Butterfly), 13, with 10 PWM (Ladybug)
• Analog submit pins: 6 (Butterfly), 5 (Ladybug), 12-bit ADC channels
• Analog outlay pins: 2 12-bit DAC
• RTC: 1 ppm accuracy
• Flash memory: 256 KB SRAM: 64 KB
• Voltage regulator: 3.3-5.5V submit / 3.3V, 150 mA output
• Dimensions: 1.4 x 0.7? (Butterfly), 1.1 x 0.6? (Ladybug)
We designed Butterfly and Ladybug for tiny LiPo battery operation. There is a pier for a JST battery connector on a house as good as a Vin during a house corner that connects to a battery anode so peripherals like haptic motors or displays can be powered directly from a battery, or a house can be directly powered from Vin. We chose a smallest form factors for a play to capacitate use for wearable applications. Ladybug is smaller than many single-cell LiPo batteries!
We designed Butterfly and Ladybug for ultra-low-power applications. We chose a NCV8170 150 mA 3V3 LDO since it has a solid stream of usually 500 nA. We enclosed a immature power-on led so users could tell when a device was powered yet combined a solder jumper (on a back) to concede a snippet provision energy to a led to be cut and reconnected easily. Even yet a led uses a 4700 Ohm current-limiting resistor, it still draws 280 uA, that is a lot when weeks of battery life is required. These are elementary growth play to build and use, yet we put a lot of suspicion and facilities into their design:
– Fully-functional USB programming (not surreptitious by a UART bridge); hence USB/CDC, USB/MSC and USB/HID are upheld . USB/MSC means drag and dump files to/from any SPI peep trustworthy to your Butterfly or Ladybug from/to your pc!
– No formidable program setup indispensable to understanding with ST-Link or JTAG debuggers. Simple Arduino IDE formation around USB/DFU.
– Logical pinmap to approve with a Arduino UNO / Arduino Zero while adding additional UART/SPI/I2C peripherals in a unchanging approach (Nucleo exposes usually 1 UART, 1 SPI and 1 I2C).
– RESET BOOT buttons for palliate of use with normal apparatus chains.
– Very low energy operation (not probable with Nucleo as a ST-Link is on a same PCB and but it, functionality is severely limited)
– Tiny form factors, ideal for wearable applications
– Open Source. Simple and easy-to-build hardware designs and easy to use with any program covering (try regulating an Arduino Zero but an Arduino IDE!)
The usually underline blank is ultra-low cost and this is where we come in! Help us accommodate the Kickstarter idea and we can make these extraordinary growth play in sufficient quantities to make them really affordable for everyone!
Source: KickstarterFiled Under: Hardware, Top News