Dragonfly.v02
author: PeskyProducts
4 layer board of 0.71 x 1.41 inches (17.9 x 35.7 mm)
Uploaded:
February 02, 2016
Shared:
February 02, 2016
Total Price:
$9.90
Second iteration of STM32L4 breakout. Replaced TLV70733 with NCP161 3.3 V LDO with 500 mA current and 18 microA Iq, replace I2C EEPROM with 32 Mbit SPI NOR flash on fast QSPI port, added PAS3225 3.3V 0.11 F supercap on VBAT for RTC backup, put SMD pads on back for auxiliary serial port, reversed battery terminal polarity so LiPo JST connector can be soldered to the board, and added power-on led disable via back solder jumper for low power applications.
Second iteration of STM32L4 breakout. Replaced TLV70733 with NCP161 3.3 V LDO with 500 mA current and 18 microA Iq, replace I2C EEPROM with 32 Mbit SPI NOR flash on fast QSPI port, added PAS3225 3.3V 0.11 F supercap on VBAT for RTC backup, put SMD pads on back for auxiliary serial port, reversed battery terminal polarity so LiPo JST connector can be soldered to the board, and added power-on led disable via back solder jumper for low power applications.
