EC Pro2 Controller Lite

4pplet·EC-Pro-2·PCB/Controllers/EC_Pro2_Controller_Lite/EC_Pro2_Controller_Lite.kicad_pcb

EC Pro2 Controller Lite PCB layout, top view — open source board by 4pplet

Simulate this board

About the EC Pro2 Controller Lite PCB

EC Pro2 Controller Lite is an open source PCB design by 4pplet, published on GitHub under the MIT license. It is a 2-layer board measuring 141.5 × 36 mm, with 8 components from 7 distinct parts.

Other key parts include the MIC2026-2BM. By type, the board carries 2 resistors, 1 IC, 1 connector, 1 fuse, 1 inductor and 1 capacitor.

It belongs with the keyboards designs in this gallery.

From the project

Open source replacement PCB kit for the HHKB Pro 2 keyboard.

Open source HHKB Pro2 Controller and mainboard.

This project is a continuation of my development of open source EC boards.

The supported layout options are the following:

- Layout size: HHKB Pro2 ANSI and some additions - Compatible switches: EC switches (Topre and NIZ) - Microcontroller: STM32F401 - Connector: JST connector for controller board - Firmware compatibility: QMK (with VIA/VIAL support) - Protection hardware (present on both the mainboard and both controller versions): - Fused - ESD protection

EC Pro2 Controller Lite, from the project README — From the project README

Main components on the EC Pro2 Controller Lite

EC Pro2 Controller Lite bill of materials (BOM)

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

Qty	Part	Footprint	Refs
1	MIC2026-2BM SRV05-4	SOT-23-6-routable	U1
1	C145956 JST	JST-SR-4	J1
1	500MA 500mA	Fuse_1206_3216Metric	F1
1	HRO-TYPE-C-31-M-12	HRO-TYPE-C-31-M-12-Assembly	USB1
1	C85832 220 @ 100MHz, 2A	L_0603_1608Metric	L1
1	100N 100n	C_0603_1608Metric	C1
2	5.1K 5.1k	R_0402_1005Metric	R1, R2

EC Pro2 Controller Lite design files

The KiCad project lives in the 4pplet/EC-Pro-2 repository on GitHub; these links point at the commit this page was built from.

EC Pro2 Controller Lite: common questions

How big is the EC Pro2 Controller Lite PCB?

The EC Pro2 Controller Lite measures 141.5 × 36 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the EC Pro2 Controller Lite?

8 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 EC Pro2 Controller Lite design files?

From the 4pplet/EC-Pro-2 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the EC Pro2 Controller Lite design in my own project?

Yes, under the terms of its MIT license, which 4pplet chose for the repository.

More boards in EC-Pro-2

Similar boards