Shared Projects

LDBoostDriver

Breadboard & FTDI friendly RN2483 LoRaWAN breakout. The zipfile contains full schematic, BOM, component layout, assembly information, gerbers, 3D renders.

Main changes from V1.1:

• Fix swapped RX/TX signals
• Board has been build and tested. It is fully functional and production ready

Main changes from V1.0:

• Replaced FTDI connector by female version. Now you can plug your FTDI board directly in the breakout board.
• Add 3D renders

(To view the contents of the 3D PDF, use a recent acrobat reader)

DNS rev 0.1

CALERZ

A simple “astable multivibrator” circuit designed for testing SMD stencil techniques and SMD soldering techniques. Requires two transistors (ST2222 or equivalent, SOT-23,) two LEDs (0805,) two capacitors (0603,) and four resistors (also 0603.) Touch 9V battery to exposed pads on opposite side to test assembled circuit.

Using 1uF capacitors, 1k resistors, and 1M resistors, the LEDs blink rapidly, but not rapidly enough to call it flickering.

Two-layer board. Designed with KiCAD.

A simple “astable multivibrator” circuit designed for testing through-hole soldering techniques. Requires two transistors (2N2222 or equivalent, TO-92,) two LEDs, two capacitors, four resistors, and a 9V battery clip. Connect battery to test assembled circuit.

Using 1uF capacitors, 1k resistors, and 1M resistors, the LEDs blink rapidly, but not rapidly enough to call it flickering.

Two-layer board. Designed with KiCAD.

Proximity sensor voltage divider

adapter pcb to mount an cc2500 to the flysky fs-i6s pcb

Test board using TI’s BQ25504 DC/DC boost converter to charge a 1S LiPo battery using a small solar cell, with connection to also power a system load. Broke out Vstor (Vsys) and Battery OK.

LED/Cap Board esc4pe

Test board using TI’s BQ25504 DC/DC boost converter to charge a 1S LiPo battery using a small solar cell, with connection to also power a system load.

Board for interconnect stima devices

This is a V-USB development board meant to fit inside a metal (possibly scavenged) USB type-A shroud.

The thickness of the board and the shroud should be just about perfect to provide a nice, solid USB connection. The bottom layer also exposes traces that should be insulated from the shroud with kapton tape or similar. After all that, carefully superglue that lil' sucker inside the shroud. If you don’t want the ISP header, (or VBUS, GND, & GPIO pins) feel free to cut along the drills. The board /should/ be near flush with the edge of many shrouds.

Once the board is populated and firmware is flashed, it is software compatible with the Adafruit Trinket 5v. Rev A. successfully runs sketches in the same way a Trinket does - no extra steps required.

Notes:

• PB3 and PB4 are not broken out.
• D+ and D- are swapped from the Adafruit Trinket schematic, so you’ll have to alter the code to swap the V-USB pin assignments.
• It doesn’t have a regulator, a reset button, or any other schnazzy bells and whistles.

Changelog:

From Rev. A:

• Add LED on PB1 for bootloader status
• Tighter/smaller part footprints
• A narrower board that should fit in scavenged USB Type A Male shrouds
• Fiducial marks for machine vision
• Misc Layout improvements

Mounting holes for 0-80 machine screws.

Red de Accion Comunitaria. v0.1rev2

A simple ATMega32u4 board to learn to use surface mount devices.