Please see all COVID-19 updates here as some shipments may be delayed due to CDC safety and staffing guidelines. If you have an order or shipping question please refer to our Customer Support page. For technical questions please check out our Forums. Thank you for your continued support.


Member Since: October 28, 2016

Country: Hungary


I'm a programmer since childhood, but I was always interested in the hardware as well. Especially microcontrollers.

  • If you solder wires to the onboard flash chip's legs then you get the GPIO6-11 :) But there's the HS2/SDIO2 interface which can be used for 4-bit SD cards, and those pins are broken out.

  • Do you see any output on the serial when you press the reset button? By default the bootloader should print out some stuff. And during this, the blue LED next to pin "5" is at about half brightness. (By the way, I've ordered 2 boards and both had blink flashed on them by default. I think it's a "SparkFun default")

No public wish lists :(