If you like designing PCB’s with Eagle CAD software this Eagle library may save you tons of time. It has many great footprints that are popular but not included in standard Eagle library like RGB through-hole LED, 16×2 LCD, Relays, RCA Jack, 3.5mm Audio Jack and more. Check out full list which is updating time to time. Also if you’re new to Eagle don’t forget to check Eagle Tutorials for fast start.
Probably you have read about our PCB etcher on our site. We planed to make it fully automatic with heater, bubble machine and thermostat. But fact is that it wasn’t finished. But we are actively using it with aquarium heater only and manual mixing :). If you are looking for something similar that has a bubble machine installed you should see YourITronics brand new PCB etcher with aquarium pump and heater. They use a bubble machine that speeds up etching process and you don’t have to mix solution. The tank is made of plexiglas and holds 1.5L of liquid. All together with pump, heater and other materials etcher costed about $41 – this is much cheaper than buying from store. This tool is a must have along with UV exposure unit.
If you are just starting in electronics this nice tutorial may save you tons of time. Yourtronics prepared a nice tutorial on how to make good quality PCB by using Photo Etching Method where board image is transferred during UV exposure. For this you will need an Ink-Jet printer for printing mask on transparent film, UV exposure box which can be made at home, several chemicals (Developer, Ferric Chloride, and Acetone).
Still struggling with various PCB making technologies and cannot do it right, you should try Photo Etching method which is becoming more and more common among radio amateurs. All materials needed are easily accessed. Probably the hardest part is to obtain UV light source. But you can find tons of sources on the internet how to build one.
The term circuit technology usually refers to the various techniques that used in the manufacture of electrical circuits. A large number of devices that are used today make use of printed circuit boards (PCBs). These devices provide a mechanical support for the various components present within the given device and also, the electrical connections between the components. The electrical connections present on the PCB are made out of copper sheets that are laminated on a non-conducting material. Initially a large copper sheet is laminated on the board and then the sections that are not required are removed. Various techniques are used for removal of unwanted copper. Some of them are: Silk Screen Printing: In this technique, an etching resistant ink is applied on those areas that are required and the remaining part is etched off. Photoengraving: Here a photo mask of the circuit required is prepared using desired software and then, it is applied onto the blank PCB. After this the portions that are not required are etched off. PCB Milling: In this technique, a mechanical milling system that can work on 2 or 3 dimensions is used to remove the copper. The milling system is controlled by software.
This is an excellent video about SMD soldering using cheap and straightforward equipment that most electronics hobbyist can find at home. This 9 min video tutorial prepared by CuriousInventor includes up-close shots of fine pitch soldering such SMD elements as 603 resistors, PLCC< 44 pin QFP, 208 pins fine-pitch QFP. Also, there are few SMD desoldering tips disclosed.