Connect your LCD directly in 8 bit mode or 4 bit mode using a shift register (595 SOIC 16)

You can define up to 15 users and everyone has own password to enter. In every unlocking of the door log is taking and you can look at anytime who and when entered.

Briefly, the Tinusaur is a minimal micro-controller hardware configuration based on Atmel AVR ATtiny family of products and more specifically those with DIP-8 case such as ATtiny25/ATtiny45/ATtiny85, ATtiny13 as well as their variations.

The home of the Tinusaur is at this address: http://tinusaur.wordpress.com

The goal of the Tinusaur project is to have a simple, cheap and accessible quick-start platform for everyone interested in learning and creating things.

ICS audit && attack tool

LSM9DS0 9-axis motion sensor plus MS5637 pressure sensor add-on for Teensy 3.1 with hardwired I2C

atmega16 atmega64 ISP adapter

Originally intended to control the lights of an aquarium, this board takes two 3.3V inverted logic inputs and drives two relays for powering up to 1.5A loads (give or take). The board requires 10VDC to 40VDC power to power the relay logic. For more details, read my blog post about the hardware setup.

A raspberry pi shield that provides high quality, 24-bit DAC and ADC at 48KHz.

Schematics can be found at https://github.com/jonronen/geda-stuff/tree/master/audio_shield/pcm3060_rpi

Kernel sources can be found at https://github.com/jonronen/raspi-linux

Based on work by Florian Meier: http://blog.koalo.de/2013/05/i2s-support-for-raspberry-pi.html

…

bGeigieNano upgraded with ATmega644/1284 processor

Details here

Rev 1

Rev 1

RFM12B ATMEGA328P Wireless Sensor Node LEDClock 1v1

A breakout for the TMP102 from Texas Instruments small enough to fit inside a ¼ inch copper tube. This was inspired by the SparkFun breakout board for the same chip.

This is designed to be used with ¼ inch copper tube and thermal putty to create a water-sealed temperature probe. Instead of using a header to hookup, magnet wire is threaded through the holes and soldered. Using a solderable magnet wire is recommended. Alternatively, you could use conductive thread, but you should be careful to ensure that none of the wires cross.

NOTE: OSH Park shows the solder mask on the board image. The copper for the address connections is not connected, but the solder mask around them is removed to make addressing easier.

Source Files are a KiCAD project.

Alpha prototype stage.

This board uses an onboard Atmega328p to drive 6 N-Channel Mosfets with it’s PWM pins.

D2, D4, A0 and A1 are broken out along with GND 5v and Vin to a 2x5 header designed to run an external switch panel.

ISCP pins are also broken out to allow in-situ programming.

Heatsinking will be required for the Voltage regulator as it’s using an adjustable regulator to regulate from 12v down to 5v.

An LM1117MPX-5.0 fixed regulator can be used instead, leave R9 unpopulated and bridge R10 with a 0R link. C5 and C7 can be replaced with suitable Ceramics, though the datasheet suggests tantalum’s.

Heatsinking maybe required for the MOSFET’s depending on current draw, I suggest soldering them to the underside of the board and heatsinking them to your case, insulate them of course.

BOM

• Atmega328p-au
• Voltage Regulator
• Reset Switch
• MOSFETS
• Crystal
• Screw Terminals
• LED’s
• Resistors/Capacitors
• Tantalum Caps

msop10

Adapter for connecting a 50pin IDC connector to a breadboard with offset so that the breadboard isn’t covered by the ribbon cable

Audio limiter/leveler by W2AEW, checkout his YouTubechannel for more: https://www.youtube.com/channel/UCiqd3GLTluk2s_IBt7p_LjA