DSpace badge board build Instructions

Posted on Feb 4, 2014

This project is intended to support a simple course in which a student builds a simple AVR/Arduino based badge - a beginner`s soldering project producing a simple object with blinky lights that can be hung around the neck from a lanyard or pinned to a jacket I usually start with the parts that stick the least above the board then work outwards - t

DSpace badge board build Instructions
Click here to download the full size of the above Circuit.

his way when you place the board upside down to solder parts they stay in place more easily. The board hangs diagonally - however CAD systems don`t like that, so by convention the `top` of the board has the switches (see the picture below with the board oriented top up), the battery (the round circle) is on the `right` the `reset` switch on the `left` and the LEDs at the bottom right. The schematic for what we`re building is also available. And if you have a copy of the Eagle CAD program you can look at the layout as well (look in the downloads section) Solder in the resistors - R1 the 10K resistor at the top is the reset pullup resistor, R2-6 are all 1k and are the LED current limiting resistors - it looks prettier if they are all lined up the same way. First the CPU - look at the chip, on the top one corner has a dot next to it - this is pin 1 - there is a matching dot on the board - the pin 1 end of the chip should be at the `top` side of the board. There is also a notch in this end of the chip, the notch should face up and be located right next to resistor R1. Gently insert the pins into the holes on the board, don`t force them - chances are they are splayed slightly too far apart - place one side of the chip against your work bench and very gently bend all the pins on that side to the correct angle, then do the other side. Once the pins are in place check again that pin 1 is in the right place, turn the board over and...

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