Shared Projects

This is mostly a “ethernet connected device” to allow network access to up to 4 relays, or LED strips for example.

It is a carrier board for one of the really cheap “Arduino Pro Mini” you can buy for 1.99 GBP on ebay.

It has a slot for a ENC28J60 ethernet module (ebay again, about 3 GBP) that installs itself underneath.

It has 2 (optionals) TC4427 dual FET drivers, to drive relays directly, or a FET to control large LED arrays. The 4 FET are routed to the edge connector.

It also has a Maxim DS2483 i2c to Onewire master, to hook up one or mode temperature sensors and the like. Also routed to the edge connector.

The serial port is also routed to the edge connector, as well as the ISP of the processor.

Furthermore, you can select the voltage of the arduino with a jumper, so you can run it all at 3.3, or at 5V.

This is a dual output switching power supply based on TI’s TPS54383 capable of delivering upto 3A of current on both outputs at the same time. Switching frequency is 300KHz with a 600KHz drop-in replacement also available. Take a look at my instructable for putting this together here - http://www.instructables.com/id/High-efficiency-dual-voltage-3A-power-supply/

Small breakout protoboard for -> http://www.buydisplay.com/default/mp3-oled.html

using the built in regulator. Pins/caps should be reasonably obvious if you compare it to the schematic in the “interface” datasheet. Untested so far.

The easy way to connect 8 or 16 bit parallel TFT displays to a Teensy 3.x board.

A BeagleBone power supply for battery use. For more information see this page.

Modified Greinacher doubler, skinny. Intended to convert bicycle “generator” (sidewall or hub) to LED current. Recommend four SB540 diodes, two 1mF x 16V laid down on board, one 6.8mF x 35V at end. Be aware of dimensions to be sure it will fit in desired tube. Use painter’s tape to make mold for epoxy poured around top of end diode. Note that there are extra V+ and V- holes. Bicycle “generators” are naturally current-limited so V+ and V- can be connected directly to power LEDs in series. IMPORTANT - do not disconnect from load while connected to bicycle generator.

voltage regulator

CNC ControlBoard for Cyclone-PCB-Factory (GRBL compatilble)

BGA Style SOIC-8 Adapter

BGA Style SOIC-14 Adapter

MicroSD to ShortSD vB2

DIL-6 SOT 23/323/416/883 and SOT 363/666 Flip Adapter

New voltage reg board

A Breakout board so that the 6" Sparkfun 7 Segment displays can be “Daisy Chained” Uses Shift Registers in an “Open Drain” configuration. This is the Conventional Version (Decimal Point at the bottom Right)

A Breakout board so that the 6" Sparkfun 7 Segment displays can be “Daisy Chained” Uses Shift Registers in an “Open Drain” configuration. This is the Inverted Version (Decimal Point at the top left)

ISPtouch for AVR Microcontrollers

TI TAS5717 Evaluation Board

Breakout board with 6 through-hole momentary pushbuttons and 6 1206 SMD LEDs. Also includes 0805 SMD pull-up resistors for the buttons and current-limiting resistors for the LEDs. UNTESTED DESIGN