A small breakout board for the RFM95W/SX1276 LoRa module.

• Cheap - about 1" x 1".

• Fits standard breadboards.

• Has the option for fitting an SMA antenna on-board by populating R1 with 0R 0603 resistor.

• Includes de-coupling caps on rear - recommend to use C1 0.1uF and C2 10uF 0603s.

• Has silkscreened area on the rear for recording info - such as the frequency of the device.

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.

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

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.

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).