3.3V power from USB

2 layer board of 0.41 x 0.48 inches (10.5 x 12.2 mm)
Uploaded: February 14th 2019
Shared: March 14th 2019
Total Price: $0.95

Perfect for plugging into a breadboard.

Perfect for plugging into a breadboard.

D1 Mini Expander Shield

2 layer board of 1.00 x 0.80 inches (25.4 x 20.4 mm)
Uploaded: March 14th 2019
Shared: March 14th 2019
Total Price: $4.00

https://hackaday.io/project/27566-d1-mini-expander-shield

https://hackaday.io/project/27566-d1-mini-expander-shield

OpenMV adapter for D1 Mini shields

2 layer board of 1.40 x 0.80 inches (35.6 x 20.4 mm)
Uploaded: November 13th 2018
Shared: November 13th 2018
Total Price: $5.60

Lets you use D1 Mini shields with the OpenMV boards.

Lets you use D1 Mini shields with the OpenMV boards.

Barrette Hub

2 layer board of 3.55 x 2.02 inches (90.2 x 51.2 mm)
Uploaded: October 15th 2018
Shared: October 22nd 2018
Total Price: $35.75

PewPew 10.2

2 layer board of 2.76 x 1.27 inches (70.2 x 32.2 mm)
Uploaded: August 15th 2018
Shared: September 12th 2018
Total Price: $17.50