ESP32DevBoard.v01a
4 layer board of 0.71 x 1.41 inches (18.0 x 35.7 mm)
Uploaded:
November 3rd 2016
Shared:
November 3rd 2016
Total Price:
$9.90
ESP32 development board with 4 MByte SPI flash, all GPIOs exposed, FT230XQ USB-to-Serial converter for easy programming with Arduino IDE, MIC5528 3V3, 500 mA LDO, MAX1555 LiPo battery charger, voltage divider on pin 34 ADC for battery monitor, blue led on GPIO 5. Added missing pullup on GPIO 0.
ESP32 development board with 4 MByte SPI flash, all GPIOs exposed, FT230XQ USB-to-Serial converter for easy programming with Arduino IDE, MIC5528 3V3, 500 mA LDO, MAX1555 LiPo battery charger, voltage divider on pin 34 ADC for battery monitor, blue led on GPIO 5. Added missing pullup on GPIO 0.
Ladybug.v01b
4 layer board of 0.61 x 1.11 inches (15.4 x 28.1 mm)
Uploaded:
October 30th 2016
Shared:
October 30th 2016
Total Price:
$6.60
Basic STM32L432 80 MHz ARM Cortex M4F 32-pin QFN package breakout board prototype, 33% smaller than the Dragonfly pcb. Rearranged buttons and pin mapping. removed VDDA through hole.
Basic STM32L432 80 MHz ARM Cortex M4F 32-pin QFN package breakout board prototype, 33% smaller than the Dragonfly pcb. Rearranged buttons and pin mapping. removed VDDA through hole.
Butterfly.v01a
4 layer board of 0.71 x 1.41 inches (17.9 x 35.7 mm)
Uploaded:
October 29th 2016
Shared:
October 29th 2016
Total Price:
$9.90
Low-cost Dragonfly-lite breakout board prototype using the STM32L433CCU6 80 MHz ARM Cortex M4F 48-pin QFN package. Replaced single led with rgb led, moved 3 x 2 connector to be compatible with Dragonfly shields, added ferrite bead on VDDA.
Low-cost Dragonfly-lite breakout board prototype using the STM32L433CCU6 80 MHz ARM Cortex M4F 48-pin QFN package. Replaced single led with rgb led, moved 3 x 2 connector to be compatible with Dragonfly shields, added ferrite bead on VDDA.
Ladybug.v01
4 layer board of 0.61 x 1.11 inches (15.4 x 28.1 mm)
Uploaded:
October 28th 2016
Shared:
October 28th 2016
Total Price:
$6.60
Basic STM32L432 80 MHz ARM Cortex M4F 32-pin QFN package breakout board prototype, 33% smaller than the Dragonfly pcb.
Basic STM32L432 80 MHz ARM Cortex M4F 32-pin QFN package breakout board prototype, 33% smaller than the Dragonfly pcb.
Solarcharger.v01a
2 layer board of 0.51 x 0.51 inches (12.8 x 12.8 mm)
Uploaded:
October 10th 2016
Shared:
October 10th 2016
Total Price:
$1.25
Test board using TI’s BQ25504 DC/DC boost converter to charge a 1S LiPo battery using a small solar cell, with connection to also power a system load. Broke out Vstor (Vsys) and Battery OK.
Test board using TI’s BQ25504 DC/DC boost converter to charge a 1S LiPo battery using a small solar cell, with connection to also power a system load. Broke out Vstor (Vsys) and Battery OK.
