Shared projects

QFN24 Breakout Board

2 layer board of 0.54 x 1.26 inches (13.6 x 32.1 mm).
Shared on January 13th, 2017 21:13

Designed for a CP2104 USB to UART bridge, broken out suitable for breadboard prototyping.

Note that centre pad isn’t grounded, and there is no ground plane.


QFN24 Breakout Board

2 layer board of 0.54 x 1.26 inches (13.6 x 32.1 mm).
Shared on January 13th, 2017 21:13

Designed for a CP2104 USB to UART bridge, broken out suitable for breadboard prototyping.

Note that centre pad isn’t grounded, and there is no ground plane.



ESP-32S breakout board

2 layer board of 1.13 x 1.43 inches (28.6 x 36.2 mm).
Shared on December 31st, 2016 14:43

A minimal footprint breakout board for the ESP-32S module. Untested.


ESP-32S breakout board

2 layer board of 1.13 x 1.43 inches (28.6 x 36.2 mm).
Shared on December 31st, 2016 14:43

A minimal footprint breakout board for the ESP-32S module. Untested.



Ghetto PoE 5V v0.1

2 layer board of 0.77 x 0.75 inches (19.5 x 19.0 mm).
Shared on October 25th, 2016 16:02

Ghetto PoE 5V v0.1

A board designed to take 5v from a micro USB connector and send it down a CAT5/CAT6 cable for breakout and use at the remote end.

The board sends power down all 4 pairs, so the current carrying capacity is maximised, and should be good for around 500mA. Note that voltage drop will be an issue over long cable runs.

The BOM is pretty basic:

  • An RJ45 port, with LEDs (of which only the right, green, one is used to indicate power). I’ve used the Amphenol RJHS-4081.

  • Micro USB PCB mount connector. I use cheapos from aliexpress.

  • A current limiting 0603 resistor for the LED - I’m using a 1.5K to keep power use down.

  • A 1206 0.5A hold current, 1A trip current resettable fuse. I’m using Littelfuse 1206L050YR.


Ghetto PoE 5V v0.1

2 layer board of 0.77 x 0.75 inches (19.5 x 19.0 mm).
Shared on October 25th, 2016 16:02

Ghetto PoE 5V v0.1

A board designed to take 5v from a micro USB connector and send it down a CAT5/CAT6 cable for breakout and use at the remote end.

The board sends power down all 4 pairs, so the current carrying capacity is maximised, and should be good for around 500mA. Note that voltage drop will be an issue over long cable runs.

The BOM is pretty basic:

  • An RJ45 port, with LEDs (of which only the right, green, one is used to indicate power). I’ve used the Amphenol RJHS-4081.

  • Micro USB PCB mount connector. I use cheapos from aliexpress.

  • A current limiting 0603 resistor for the LED - I’m using a 1.5K to keep power use down.

  • A 1206 0.5A hold current, 1A trip current resettable fuse. I’m using Littelfuse 1206L050YR.



555 led flasher

2 layer board of 0.44 x 0.36 inches (11.3 x 9.0 mm).
Shared on September 23rd, 2016 11:24

A simple 555 LED flasher circuit, using a TI TLC555CD (SOIC package) designed to flash 2 LEDs at the same time. Built to expect 0402 Rs and Cs, and 0603 LEDs (but will prob try out 0402 LEDs).


555 led flasher

2 layer board of 0.44 x 0.36 inches (11.3 x 9.0 mm).
Shared on September 23rd, 2016 11:24

A simple 555 LED flasher circuit, using a TI TLC555CD (SOIC package) designed to flash 2 LEDs at the same time. Built to expect 0402 Rs and Cs, and 0603 LEDs (but will prob try out 0402 LEDs).



otb-8266 breakout v0.1

2 layer board of 1.13 x 0.93 inches (28.6 x 23.5 mm).
Shared on September 16th, 2016 18:29

A breakout board for the otb-8266 v0.1 ESP8266 module.


otb-8266 breakout v0.1

2 layer board of 1.13 x 0.93 inches (28.6 x 23.5 mm).
Shared on September 16th, 2016 18:29

A breakout board for the otb-8266 v0.1 ESP8266 module.