AX02B 29-pin

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Read this official Leafony page and explain its key points in English. For hardware help, first ask for a photo or the installed leaf models, assembly and power sources, then the goal and tools. Clarify which LED or display changed and whether a cable or leaf was replaced. Do not equate an unseen reset button with an absent one, or I2C acknowledgement with a working display. Verify specifications against sources; distinguish observations from hypotheses. Follow a redirect to its destination; if unreadable, ask for the relevant text instead of guessing.

Page: AX02B 29-pin

URL: https://docs.leafony.com/en/leaf/extension/ax02b/

Description / headings (excerpt): Features / Specification / Pin assignment / Documents

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Features

Connect leaves to breadboards or universal boards to prototype external circuits and check signals. AX02B 29-pin Leaf routes all 29 pins of the Leafony Bus to 2.54 mm pitch through-hole pads for connections using jumper wires or pin headers.

Converts the 29 pins of the Leafony Bus to 2.54 mm pitch through-hole pads
Leafony standard 20 mm square leaf shape

Specification

Item	Description
Dimension	W20×D20mm
Pin pitch	2.54mm

Pin assignment

The numbers on the top silkscreen advance downward in groups of five from the upper left.

Column	Pins
1	1, 2, 3, 4, 5
2	6, 7, 8, 9, 10
3	11, 12, 13, 14, 15
4	16, 17, 18, 19, 20
5	21, 22, 23, 24, 25
6	26, 27, 28, 29

In the KiCad schematic, Leafony Bus F1 through F29 are connected to the through-hole pads.

For Leafony Bus pin assignment data, see Leaf-pinassign.

Documents

Revision history

May 2026: First edition