TamojitSaha / uStick

μStick (pronounced as "mu stick")or uStick is a 32bit Arm Cortex M0+ based Arduino Compatible micro development board specially designed for battery driven projects/products.

uStick

μStick (pronounced as "mu stick")or uStick is a 32bit Arm Cortex M0+ based Arduino Compatible micro development board specially designed for battery driven projects/products. The project is available to order from OSH Park.

Features:

• Micro Dev Board (39mm x 15mm)
• ATSAMD11C14 -- 32bit Arm Cortex M0+
• 16kb flash, 4kb SRAM
• Battery charging modes(user configurable):
  • 1. USB 100mA
  • 2. USB 500mA
  • 3. Resistor settable charging current upto 1.6A
• Low noise LDO
  • low Output-VoltageNoise:12 μVRMSTypical
  • PSRRat 1 kHz:75 dB Typical
  • OutputVoltageTolerance(VOUT≥3.3 V): ±2%
  • Low IQ(Enabled,No Load):30 μA Typical
  • Low Dropout(VOUT≥3.3 V): 95 mV Typical at 500 mA Load
• Choosable EEPROM(16-512 MegaBit, refer to this library)
• Auto charging and system power management
• Charging status and power good indicator
• Button configurable for reset or general use (pin D15) with debouncing.
  • Use as reset (default), with bootloader entry via reset double-tap
  • Use as a general purpose button, with bootloader entry by holding during powerup.
• ESD protection on USB D+ and D- lines
• 9 solder jumpers on PCB bottom for configuration flexibility
• Arduino compatible (use the Arduino IDE to upload)

Design Layout

  

License

The source files are released under CC-BY-SA 4.0.