Revision History

V6:

Coming to Amazon in Fall of 2025, available now upon request as replacements for V5 boards.

This board replaces the single 3 connection I2C pull up jumper with two dual 2 connection jumpers. This fixes the V5 issue. This change also makes the solder jumpers easier to close, as the V5 3 connection jumper had a tendency for 2 pads to pull solder from the 3rd, making it challenging to connect all 3 at once. Both jumpers must be soldered for pull-up functionality.

V5:

The first version released to the public as rewards in the 2025 Kickstarter campaign. First sent to Amazon in July of 2025.

This board has one known issue. The Ground Plane intrudes slightly into the solder jumper for the I2C pull up resistors. A small section of this plane can be seen in between the outer jumper traces at the bottom of the jumper. A solder blob that connect the solder jumper pads to this small section will cause a short between V3.3 and Ground rendering the board inoperable. Workaround is to solder very carefully to avoid touching this pad, or use external I2C Pull Up resistors. Free V6 replacement boards are available to users who are affected by this issue. Contact help@serialwombat.com for more information.