Tomtho mk2 trackpad

lou12de39r·ashiyu·trackpad/tomtho_mk2_trackpad.kicad_pcb

Tomtho mk2 trackpad PCB layout, top view — open source board by lou12de39r

About the Tomtho mk2 trackpad PCB

Tomtho mk2 trackpad is an open source PCB design by lou12de39r, published on GitHub. It is a 4-layer board measuring 49 × 43 mm, with 20 components from 7 distinct parts.

Other key parts include the IQS550. By type, the board carries 12 resistors, 6 capacitors, 1 IC and 1 connector.

From the project

This board is derived from GR-Trackpad65 by geek-rabb1t (MIT License, see LICENSEGR-Trackpad65; original files in srcgrt65/).

This board is derived from GR-Trackpad65 by geek-rabb1t (MIT License, see LICENSEGR-Trackpad65; original files in srcgrt65/).

GR-Trackpad65 is 65 × 49 mm with 15 Tx × 10 Rx. Its electrode pitch is 4.2 mm (Tx) × 4.7 mm (Rx). Keeping 10 Tx columns gives exactly 42 mm, so the electrode shape, pitch and IC surroundings are reused as they are. Only the board was cut down.

Main components on the Tomtho mk2 trackpad

IQS550

Tomtho mk2 trackpad bill of materials (BOM)

20 components, 7 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	IQS550	QFN-48-1EP_7x7mm_P0.5mm_EP3.5x3.5mm	U1
1	CONN_01X06 Conn_01x06	Jushuo_AFC07-S06FCA-00_1x6-1MP_P0.50_Horizontal-JLC	J1
2	100N 100n	C_0603_1608Metric	C1, C6
2	100P 100p	C_0603_1608Metric	C2, C4
2	1u	C_0603_1608Metric	C3, C5
2	4.7K 4.7k	R_0603_1608Metric	R1, R2
10	1k	R_0603_1608Metric	R3, R4, R5, R6, R7, R8, R9, R10 +2

Tomtho mk2 trackpad design files

The KiCad project lives in the lou12de39r/ashiyu repository on GitHub; these links point at the commit this page was built from.

Tomtho mk2 trackpad: common questions

How big is the Tomtho mk2 trackpad PCB?

The Tomtho mk2 trackpad measures 49 × 43 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Tomtho mk2 trackpad?

20 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Tomtho mk2 trackpad design files?

From the lou12de39r/ashiyu repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Tomtho mk2 trackpad design in my own project?

The repository has no license, so all rights stay with lou12de39r. Use it as a reference, and ask the author before reusing the design.

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