I2CHWC DIGEXT
About the I2CHWC DIGEXT PCB
I2CHWC DIGEXT is an open source PCB design by riban-bw, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 66 × 99.1 mm, with 63 components from 4 distinct parts.
By type, the board carries 60 diodes and 3 connectors.
From the project
A hardware controller providing rotary encoders, switches and potentiometer values via I2C
I2C Hardware Controller provides an interface to other applications via 30 continuous rotary encoders, 50 on / off switches and 64 end-stopped variable resistors (potentiometers). The link to the host device is via I2C which requires a clock and data signal. Power may be provided by the host as 3.3V or 5V. (Both devices must have a common ground.) The host may continuously poll the hardware controller (HWC) for changes or use a dedicated GPI signal to trigger interrupts (or similar event handling routine). Several HWC may be cascaded to increase the quantity of controls as required sharing…
I2CHWC DIGEXT bill of materials (BOM)
63 components, 4 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Encoders 11-20 | PinHeader_2x20_P2.54mm_Vertical | J1 |
| 1 | Encoders 21-30 | PinHeader_2x20_P2.54mm_Vertical | J2 |
| 1 | EXT | PinSocket_2x10_P2.54mm_Vertical | J3 |
| 60 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8 +52 |
I2CHWC DIGEXT design files
The KiCad project lives in the riban-bw/I2C-Hardware-Controller repository on GitHub; these links point at the commit this page was built from.
I2CHWC DIGEXT: common questions
How big is the I2CHWC DIGEXT PCB?
The I2CHWC DIGEXT measures 66 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the I2CHWC DIGEXT?
63 components, from 4 distinct parts. The full bill of materials is listed on this page.
Where can I download the I2CHWC DIGEXT design files?
From the riban-bw/I2C-Hardware-Controller repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the I2CHWC DIGEXT design in my own project?
Yes, under the terms of its GPL-3.0 license, which riban-bw chose for the repository.
