Skip to content

Releases: siderakb/mdbt-micro

MDBTMicro-50Q v1.4

26 Nov 08:58
47f1c3f
Compare
Choose a tag to compare
Front Back Layers

Removed

  • Remove USB D+/- test pads.

Changed

  • Change SWD connecter footprint, makes it easier to solder.

v1.4 not yet produced and tested.

MDBTMicro-50Q v1.3

31 Oct 05:02
684ddf3
Compare
Choose a tag to compare
Front Back

Added

  • USB D+/- test pads added.

Changed

  • Replace all capacitors, resistors and LEDs footprint back to 0603 again, except R5 and LD3.

Refer to the README for more information.

v1.3 produced and soldered, but not tested.




PCBWay sponsored and produced MDBTMicro-50Q v1.3
the silkscreen text height of v1.3 is only 0.8mm, but the printing is still very clear
the quality of the electropolishing SMD stencil is also very good
thanks again to PCBWay for supporting this project

I also published MDBTMicro on PCBWay's sharing platform
if you want to order the PCB, you can do it directly from the page

The unboxing video

PCBWay also sponsored my another project: PMW3360 PCB

MDBTMicro-50Q v1.2

16 Oct 12:38
51e4fb3
Compare
Choose a tag to compare
Front Back

Fixed

  • Fixed the ProMicro board 2.54mm pin headers hole size from 0.7mm to 1mm.

Added

  • LD3 VBUS power indicator.

Changed

  • Move C1 and C2 away from the back of USB D+/- differential pair tracks.
  • Reduce the size of board to 33.02 x 17.78mm (1.3 x 0.7 inch, same as ProMicro).

Refer to the README for more information.
v1.2 not yet produced and tested.

MDBTMicro-50Q v1.1

15 Oct 11:26
bfe8530
Compare
Choose a tag to compare

⚠️ Due to pin headers hole size issues, this version is not recommended for production and use.

Preview

Front Back

Changed

  • Replace all capacitors, resistors and LEDs footprint from 0603 to 0402.
  • Replace X1 crystal footprint from 1610 to 3215.
  • Replace SWD connector from 1.27mm pin header to test pad (TP8 ~ TP10).
  • Q1 and Q2 P-MOSFET added.
    • Q1 for LiPo battery load sharing.
    • Q2 for output Vcc switch.
  • 7 extra pins TP1 ~ TP7 added.
  • Update the USB Type-C footprint.

Refer to the README for more information.
v1.1 not tested.

MDBTMicro-50Q v1.0

13 Sep 13:16
52f835f
Compare
Choose a tag to compare

First release, not yet tested.

PCB Size: 18 * 33 (mm).

Front Back

Refer to the README for more information


I order panelization PCB (MDBTMicro_50Q_v1.0_panelization_gerber.zip) from JLCPCB for 2 USD, and get 5*10 MDBTMicro-50Q boards.
SMT stencil (MDBTMicro_50Q_v1.0_stencil.dxf) is 14.26 USD.