Shared Projects

BLF flashlight driver for Yezl Y3, DD+m

Features

• 23 mm direct drive + 350 mA regulator LED driver
• R5 to eliminate unintentional Vcc boosting during PWM.
• R3, R4 for stable drive of FET.
• Oversized heat plane for the 7135 with good thermal link to the ground ring.
• Generous 0603 pad sizes that will accept 0805 parts as well.
• Universal package size for MCU. Tiny13-85 fits.

Revision changes

• New

Suggested parts list

• U1: Atmel Attiny25, SSU or SSN package
• U2: 7135 350 mA LED driver
• Q1: Vishay SiR800DP
• C1: 10 uF, X5R or better, 0805
• D1: Schottky diode, 200 mA 20 V or better, 0805 or SOD323
• R1: 22 / 330 kohm, 1%, 0603 (R1, R2 larger values for e-switch lights)
• R2: 4.7 / 100 kohm, 1%, 0603
• R3: 100 kohm, 5%, 0603
• R4: 47 ohm, 5%, 0603
• R5: 4.7 ohm, 5%, 0603

  Tactile switch is Digikey part no:

• EG4389CT-ND
• or EG4388CT-ND

A PLC made out a atxmega32a4u

LCD_Control.brd

USB_Dip_Coater_IDC_connector.brd

USB_Stepper_Motor_Driver.brd

dual output breadboard helper

This is a LEGO minifigure sized development board using an Atmel SAMD21E M0 chip. I basically followed the recommended layout/setup from the SAMD21 spec sheets.

R3 may or may not be needed during programming.

SDA/SCL lines have 4.7k pull-up resistors

Included a 3.5mm WS2812B LED for fun.

This version has two 2.54mm pitch SMT connectors for a protoboard friendly design.

More details on Github

STM8L051F3 badge

It consists of a microcontroller STM8L051F3, 32 kHz resonator, two buttons, a gyroscope, power driver and sound system (buzzer) and LED matrix 8 * 5.

A board designed to help make building a joystick for a Neo Geo easy and clean. This design uses terminal blocks with a 5mm pitch.

The design has screw terminals for each line from the DB15 connector as well as terminals for each button and the joystick. There is also space for an LED (powered by the +5v from the Neo Geo) and an extra terminal for the +5v line in case you want to do something with that.

The board is designed for use with Phoenix Contact’s Combicon PT series 5mm terminal blocks (however others with the same pitch will most likely fit). There are 6 2 position blocks for the buttons (+1 extra if you want one for +5v). There is 1 5 position terminal block for the joystick and 1 15 position terminal block for the DB15 in from the system. You could use the board just fine without populating the terminals (soldering directly to the holes for the terminals) but if that’s your goal a nicer and smaller board could be made with just pads/holes.

Note: The LED (including its resistor R1) and the +5v terminal block are completely optional.

A board designed to help make building a joystick for a Neo Geo easy and clean. This design uses terminal blocks with a 3.5mm pitch.

The design has screw terminals for each line from the DB15 connector as well as terminals for each button and the joystick. There is also space for an LED (powered by the +5v from the Neo Geo) and an extra terminal for the +5v line in case you want to do something with that.

The board is designed for use with Phoenix Contact’s Combicon PT series 3.5mm terminal blocks (however others with the same pitch will most likely fit). There are 6 2 position blocks for the buttons (+1 extra if you want one for +5v). There is 1 5 position terminal block for the joystick and 1 15 position terminal block for the DB15 in from the system. You could use the board just fine without populating the terminals (soldering directly to the holes for the terminals) but if that’s your goal a nicer and smaller board could be made with just pads/holes.

Note: The LED (including its resistor R1) and the +5v terminal block are completely optional.

(v1.8)

A board for building a line voltage inducer (as part of a phone cable) powered by USB. Meant for use with a Dreamcast and DreamPi. The board includes a DC-DC boost converter which boosts the 5v supplied via the USB to the required voltage- both 9v and 18v are supported, you just have to populate the board for the appropriate voltage. Phone jacks are used instead of splicing the cable to make the inducer as easy to use as possible.

• U1 is a TI MC33063AP
• D0 should be a Schottky Diode with a high enough voltage rating
• J1 and J2 were designed for Stewart Connector’s SS-6466S-A-PG1
• J3 was designed for Amphenol FCI’s 73725-0110BLF

Prototyping Board with 30 Columns

Main Board of Divergence Meter 2 - TEST

IN-14 Board of Divergence Meter 2 - TEST

My first tryout for a Tranceiver with the PCB-Antenna. Used TSSOP-20, 9x 0402 and 1x 0603 Component’s Footprints. Ready for seamless Integration in exist system.

First release. Need try to real circuit environment.