Shared Projects

for any foursevens quark and a triple 20mm Noctigon with 3 different emitters-

• Red XP-E2 for moonlight
• White Nichia 219 for medium modes with very high CRI
• White XP-L for more light (like a turbo but not just a single mode)

The red XP and the Nichia are the main emitters (head loose), because of the limited capacity of currently available 17650’s a low drive current is used for extended runtime, tighten the head and the FET turns on to run the XP-L at higher current for “turbo”.

Red will turn off above moonlight however both white emitters will run with the head tight. Moonlight (red) operates in either head loose or head tight modes and will only be on by its self (regardless of head state). EVEN WITH HEAD TIGHT (TURBO) ALL MODES STILL WORK!! “Turbo” simply adds in the second white emitter (the XP-L), it runs in tandem with the N219 using PWM dimming!

This concept can be used on any light with anodized head threads however its to large for a 17mm driver compartment, will need sized down for other lights.

INA125P breakout board to use load cells and other transducers with Arduino / Raspberry Pi etc.

Github Repo: github.com/cgrossde/LIR2450-USB-Charger

Based on MCP73831. Beware not tested (yet).

There are two charge modes:

• fast (45mA)
• slow (25mA)

Max charge current for a coin cell is usually between 80% and two third of it’s capacity. So you could charge a 100mA coin cell with 80mA. I wanted to increase the lifetime of my coin cells and reduced the charge current. If you want to have different currents here is the equation to calculate R_SLOW/R_FAST:

mA = 1000 / R in kΩ

Example: 1000/20kΩ = 50mA

BOM:

• MCP73831 SOT-23-5
• 0603 LED Green (~3.1V voltage drop)
• 0603 LED Orange (~2V voltage drop)
• 0805 Resistor 200Ω
• 0805 Resistor 320Ω
• 0805 Resistor 40kΩ
• 0805 Resistor 22kΩ
• 0805 Capacitor 4.7uF
• CR/LIR2450 Coin cell holder (20mm diameter, 5mm height)
• (optional) male pin header, jst pin header

Invensense’s bottom-ported MEMS digital microphones with an embedded ASIC which directly outputs 24-bit I2S serial data without the need of a CODEC. Enlarged sound port holes. Board is intended for echo location (sonar) using the Teensy 3.x or Edison microcontrollers.

Water rocket telemetry and flight control

10u169

Two LED blinky circuit for learning how to solder.

Adapter for QDSP-6064 bubble 7-segment LED display

NRF24 Nitwork node LPC11U67, mini-B USB, LM92 or DS1621 temperature sensor, 3.3V regulator.

This board is designed to fit in a Hammond 1551R case, 50x50x20mm. The NRF24 only fits in the box if it is soldered down directly, but using the header and a socket works fine outside this box.

SoundSMD second rev

ATTtinyX61A drives a series of LED as a volume meter

https://www.ghielectronics.com/community/forum/topic?id=17007

I have just uploaded it, so it is not tested. I will update the description once it is tested.

Special thanks to forum member @iamin for designing the module!

https://www.ghielectronics.com/community/user/16101

XBTherm with battery protection

PCA9682 with mosfet control

GPRS Connected Data Logger

Same Pads as 5c but better markings