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I came across this very nice home PCB guide. It explains step by step all the details you need to build your proffesionally look and feel PCB. Article topics:
- Things needed
- Safety equipment
- Exposing
- Developing
- Etching
- Tinning the board
- Silkscreen
- Drilling
- Gallery
Yet another home-pcb fabrication page – [Link]
That’s a guide to build your own 5x5x5 led cube made by ”th_shak”. Full instructions can be downloaded here (rar pass = led_cube) and you can see it in action here. PCB, schematics and source code is included.
Hardware:
- ATmega32 running at 16MHz
- D type Flip-Flops
- PNP (common anode driving) transistors
- 125 high brightness blue LEDs
Firmware:
- CodeVisionAVR
5x5x5 LED CUBE – [Link]
IR Remote Volume Controller - [Link]
Channel Relay Board is a simple and convenient way to interface 8 relays for switching application in your project.
- Input – 12 VDC @ 336 mA
- Output – eight SPDT relay
- Relay specification – 5 A @ 230 VAC
- Trigger level – 2 ~ 5 VDC
- Berg pins for connecting power and trigger voltage
- LED on each channel indicates relay status
- Power Battery Terminal (PBT) for easy relay output and aux power connection
- Four mounting holes of 3.2 mm each
- PCB dimensions 169 mm x 72 mm
8 Channel LPT relay board - [Link]
200W Lamp Flasher kit is used to flash lamps, bulbs and halogen lamp to give your product that attracting look.
- Input supply – 6 ~ 12 VDC
- Output – upto 200 W lamp / bulb load
- Optically isolated Mains supply
- Onboard preset to adjust the frequency (speed) of flashing (1 Hz to 5 Hz)
- Power Battery Terminal (PBT) for easy input 230 VAC mains and load connection
- Terminal pins for connecting DC power supply
- Four mounting holes of 3.2 mm each
- PCB dimensions 36 mm x 68 mm
200W Lamp Flasher - [Link]
20W Audio Amplifier kit is based on LM1875 IC.
- Power supply – 48 VDC
- Output – 20 W, 4 Ω
- Very low distortion (THD – 0.015%), good channel separation and ripple rejection
- IC built-in thermal, short circuit protections
- Internal output protection diodes
- Terminal pins for connecting input
- Power Battery Terminal (PBT) for easy power supply and speaker connection
- Power-On LED indicator
- Heatsink for IC
- Four mounting holes of 3.2 mm each with nut and stud
- PCB dimensions 48 mm x 60 mm
20W Audio Amplifier using LM1875 - [Link]
DC Servo Motor Driver kit, designed using MC33030 IC, is the fastest and low cost way of getting your DC Servo Motor up and running.
- Input – 12 VDC
- Output – can drive upto 1 A Load
- Overcurrent shutdown, overvoltage shutdown
- Programmable reference input
- Power-On LED indicator
- Relimate connector for interfacing the kit
- Four mounting holes of 3.2 mm each
- PCB dimensions 45 mm x 54 mm
DC servo motor driver - [Link]
High Current Bipolar Stepper Motor Controller kit is based on chopper drive. Chopper drive is a method of providing a constant current source to a device. Chopper drive allows for use of higher voltage power supply for better performance and higher speed. It is uses SGS Thomson’s L297 and L298 controller IC’s.
- Logic supply – 5 VDC @ 300 mA
- Motor Supply – 8 to 30 VDC
- Connection via 10-pin Box Header for easy interface with any microcontroller development boards
- External or internal voltage reference option via jumper
- Onboard preset for current adjustment
- High speed switching diodes for L298 IC protection
- Power-On LED indicator for both the supplies
- Power Battery Terminal (PBT) for easy supplies and motor connection
- Heat sink included
- Four mounting holes 3.2 mm each
- PCB dimensions 74 mm x 71 mm
High current bipolar stepper motor controller - [Link]
5 LED VU Meter kit is based on LB1409 IC from SANYO, which will indicates the volume level of the audio signal it senses
- SUPPLY 12V DC @ 50mA
- PR1 REF SET
- PR2 AUDIO LEVEL SET
Audio VU meter 9 leds - [Link]
20W Bridge Audio Amplifier kit, based on the TDA2005 IC, a class B dual audio amplifier, specifically designed for car radio applications etc.
Power supply – 18 VDC
- Output power – 20 W, 4 Ω
- IC built in Thermal Shut-down, Load dump voltage surge protected
- Terminal pins for connecting left and right audio signal inputs
- Relimate Connector for connecting Potentiometer (POT) for volume adjustment
- Power Battery Terminal (PBT) for easy power supply and speaker connection
- Power-On LED indicator
- Heatsink for IC
- Four mounting holes of 3.2 mm each with nut and stud
- PCB dimensions 63 mm x 65 mm
20W Bridge Audio Amplifier - [Link]
