Shared Projects

VHF amplifier 4 watts+ output. 80-120 MHz.

CIC_KEY_V3.2

Berg40 to DE9x adapter for DEC boards

This is an adapter board for DEC serial boards (DL11 series, KL8 series) that use the 40pin BERG (IDE) 2x20p cable connector for the serial port. It routes the serial signals from the flat cable connector to various pins on the DB9 (M or F) connector thru a set of 100mil jumper header blocks. Flexibility for using either a male or female DB9 connector is provided by using different jumper block positions.

J2 is a standard shrouded 40p male connector.
J1 is either a DB9 female or male connector, as desired.
P1-P4 are a set of header pins for jumpers.

Design files are accessible at this link

These are DipTrace schematic and layout data files; acrobat PDF of schematic and board are provided, as well as full layout gerber and drill files.

I2C Keyboard Lipoly Charger

Accelerometer with Temp Sensor

Filament width sensor based on TSL1401CL linear sensor array and ATtiny85, see http://www.thingiverse.com/thing:699308

A brushed adapter for Sparky or Sparky2 with an integrated 5V adapter and 200mW 5G8 VTX. Unfortunately it uses the TX5200M module which is hard to come by.

reset switch moved to facilitate bringing out RESET TX and RX lines. Provided space for JST connector at the top right (add 2 pin JST) to serve as 3 volt input for 3v projects. Any questions or comments to [email protected]

GP2S60B reflective ir sensor

TI BQ24075 Single-Cell Lithium-Chemistry Charger

Untested/Revised; caps moved closer to ICs. Same size, same schematic.

Bill of Materials

| Qty | Value  | Name (if not generic)  |
-----------------------------------------
|  4  | 2K4ohm | (1/4W 5% ok)           |
|  8  | 1Kohm  | (1/4W 5% ok)           |
|  4  | 10Kohm | (1/4W 5% ok)           |
|  4  | 10uF   | (35V Electrolytic ok)  |
|  4  | 220+uF | (50V Electrolytic ok)  |
|  1  | Header | 20/26pin shrouded Square
|  4  | 1N5408 | (3+Amp Rectifier 40+V ok)
|  4  | BTN7960| (Obsolete, BTN8962 ok) |
|  4  | Header | (5-pin/shrouded, keyed good) 
|  1  | Solderable Terminal Strip 6pos/0.3" Rated 10+Amp

Confirmed Fixed.
A re-work of the original design for a flashlight mod. Larger diameter and hopefully you’ll agree an improved method for making it a break-apart design (some sanding required). See above link for details and the backstory.

Tested, little or nothing to go wrong except in assembly or handling. Use a wide-jaw pliers to carefully and precisely snap off the text tabs first, then snap apart the two halves and sand the edges down as much as you require to fit your own flashlight(s). Add one or both resistors per instructions linked above, and let there be light!

A replacement FT232RL carrier board for my 2-part USB FTDI modular adapter.

Untested | will update | identical layout to the linked full-board design (taken directly from the small region), $3.90 / 3 copies

Zero O2 Eliminator

http://www.maltepoeggel.de/?site=tvbgone

Programmer for an ESP8266

More info can be found here https://facelesstech.wordpress.com/2015/02/07/lets-get-atmega_drunk/

A Very cool little WiFi Temperature Sensor