|
Page 1 of 3 I wanted my breadboard freed up from serving as a clock/thermometer, so I decided to build a permanent one. I had bought a couple cheap and obsolete 18F248 SOIC chips and had a PB-4 Proto-Board at hand, so I went to work.
Here's a couple photos of the first day of the build. The MCU was working and programmable at this point, but not connected to anything yet. 
Here it is with LCD socket and switches soldered in (left). My work area (right). 
Well on its way to operational (left). The back side at the same stage (right). Switched from fatty phone wire (except for power lines) to 30-gauge wire-wrap wire. It's great! The insulation can take high temperatures so you can solder another pad while actually touching a passing wire without melting and making a short, and it's super thin and flexible. 
First LCD powerup (left). No software yet, so it just displays nothing. On the right it has the software from the 16F88 in it, slightly modified to suit the 18F248. There's no thermometer chip yet, no buttons connected yet and no clock crystal yet, so the display is bogus. But it works! I'm happy! Here you can clearly see why these displays are only $6.00 each. The display is not quite straight! Doesn't bother me a bit. They look great for the price! 
Here's the backside at this stage. Still have to install the temperature sensor and some kind of voltage reference, and wire up the buttons. Stay tuned for more. 
|