Construction Phase 1 - Progress Direct Systems Volt Tattler 2 Owner's Manual

Construction Phase 1

1. SAVE THE SPEAKER INSTALL FOR NEXT TO LAST (before the microcontroller). It is tall and can
make other part installations difficult.
2. If you are using the provided 20-pin socket for the microcontroller install it now. A socket will
usually have a pin-1 end. That is an end where pin-1 of the chip will be oriented. Sometimes
the Pin-1 end of a socket is not very obvious. If you plan to solder the microcontroller directly to
the board you can skip to step 6.
3. Check the alignment of the socket over the holes for U2 to see that all of the pins are in place.
Most likely many of the pins will not align with their holes. I use a small jeweler's screwdriver to
coax each pin into its hole. Frequently one pin will hold the socket away from the board. Using
the screwdriver, find each pin that is holding the socket up. Put each lead into its hole until the
socket falls onto the board with no pressure. Don't push the socket into the holes. Eventually
all of the pins will be aligned and the socket will bottom out on the board. At this point check
that each hole has a pin poking through on the back side of the board. Once a socket is properly
seated into its holes, a small piece of cellophane tape can secure the socket for soldering.
4. Solder one corner pin of the socket to its pad. If there are pins out of place or the socket has
moved up on one end while soldering briefly heat the one soldered pin while guiding the socket