With old university hardware

One into the hardware deep like the sea!

Used to be written SCM program and Linux driver, mainly C language, the hardware is also a little understanding, but most of them stay in the dip era of single-chip microcomputer!

Now in a smart home project, hardware software to come, on the android. The driver has been made by the boss almost, a lot of drivers have been given to the original, change

Configuration on the line, and not much difficulty. Now I have to bite the bullet and complete the hardware.

Always thought the analog circuit was a pit, said the pit was because it was difficult! At the beginning of the circuit repair, it is necessary to weld 0402 inductance capacitance resistor, there are some chip IC.

What power chips, boost and Buck, you know, these inductance resistors are not a random use.

These techniques live, can not overnight, perhaps the surface looks good welding, but why can not use it, most of the false welding!

List some of the materials required for soldering, for reference only:

constant temperature electric soldering iron, knife tip and cone tip;High purity alcohol (cleaning), toothbrush (SPA);Hot Air Soldering station, for SMD Welding, for soldering iron temperature is not enough, can help increase some welding temperature. smoking Miriam, absorbing welding is the smoke that protects your lungs and eyes. suction tin wire, for solder patches, use suction away excess solder. Flux , rosin, solder paste must use strong flux, the effect of leverage! Rosin is effective for fixing patches! Solder, lead-free solder is better, solder joints relatively strong, high melting point, the price is more expensive! a good pair of tweezers. The price of tweezers ranging from a few yuan to thousands of yuan, conditional buy a pair of 200 pieces of tweezers just fine. For welding 0402 a larger effect! nose pliers, enameled wire, cutting pliers, table lamp ... some test instruments, multimeter, oscilloscope.
To be a product engineer is really inappropriate, to understand the software also need to understand the hardware, to understand Java, but also move the underlying drive, understand the operating system, understand inductance capacitance, and suppliers to bargain ... It's drunk!

Move towards this stage of the goal!

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With old university hardware