Awesome LED Edge-lit Desktop Nameplate

Step 7 Assemble Microcontroller Circuit

The microcontroller circuit is very simple. The basis of the circuit is the PICAXE 8 Pin Proto Kit. Three output pins pass through a Darlington Driver to the three LED loops and one input pin senses the state of a push button switch. The entire circuit is built directly on the proto kit’s development area. Please note this microcontroller circuit is appropriate for any situation in which each LED loop consumes less than 500mA.

1) Solder kit components in place per kit instructions.

2) Solder 18 pin socket in place. Remove the four of the pins closest to the notch in the short side of the socket. Solder socket in the offset location indicated in the picture below.

3) Solder in place mini push button switch and debounce components. To solve the problem of switch bounce, I have included a hardware debounce element consisting of a 560Ohm resistor and a 0.47uf capacitor. Reference the schematic and the pictures below for correct placement. Trim leads.

4) Solder jumper wires between components, microcontroller pins, and supply rails. Reference the schematic and the pictures below for correct placement. Trim leads.

5) Solder headers in place. Place the 2x1 90degree header and the 5x1 straight header in locations specified below.

Comments

[jds311]

 Do you have a schematic, as I need to down scale the board size?  Thank you