ALARM CLOCK ASSEMBLY GUIDE

Tutorial Goals:

These are the detailed instructions for assembling your Alarm Clock Kit. Be careful to do these steps in order or they will not fit together correctly.

Prerequisite Tutorials:

Ordered Build Instructions:

Before mounting the LCD, we want to prepare all the elements on the DB LCD RTC UNO Board, starting with the battery holder as shown below.

The battery is held quite tightly, so apply solder generously to the battery holder pads for added support.

Next we will add the buzzer which should be mounted with the "+" pin into D10 and the opposite pin into ground. Do not slide the buzzer all the way to the board. This will give you some flexibility in your enclosure.

It is also important that you snip or keep the solder joints very short on the back side of the buzzer. If they protrude too far, they will interfere with the rest of your build.

To mount the long 16 pin LCD header, first place the header in a breadboard to simplify the alignment process. If you do not have a breadboard, do not fear. In either case, applying solder to one joint provides an anchor. You can than heat the joint up and hold the board in the desired position while the pin sets. Finishing the rest of the joints is simple and safe after that.

The last thing on the board is the 90 degree angled 6-pin FTDI header. Place it as shown below, with the pins bending upward into the bottom side of the holes on the board. Again, use the first solder joint as an anchor to set the position of the header.

This is what your board should now look like with the LCD header, the FTDI header, the battery holder, and the buzzer all mounted fully.

Before attaching them together, we will build the button board on its own. Align the flat edge of the buttons with the silk lines on the board as shown.

First anchor and set all three buttons and check to see that they are sitting well on the board.

After finishing the button solder joints, mount the straight 6-pin header pack to the board as shown. On a long board like this, it is helpful to set an additional anchor after the first one is set.

Now use small pliers to carefully remove the header separators.

Once removed, your board is ready to be mounted to the DB LCD RTC UNO.

Again, use the first pin as an anchor to line the button board up as straight as possible with the main board. Note that without the header separators, the pins may fall and slide with gravity.

Once completed, the LCD should mount perfectly in the gap of the boards as shown below.

These large pads can take a little more solder to cover, but you are looking for results similar to these.

Last step on the board is to slide the coin cell battery into the previously soldered holder.

If you would like to use our custom case sticker, simply grab the box your kit came in. We will use the sticker as a stencil on the box.

Turn the box so the back end is facing you, and the bottom side is up.

If you pull back the sticker's covers just past the line on the sticker, you can easily stick it to the box. The line on the sticker should be just above the crease on the edge of the box as shown below.

Carefully wrap the rest of the sticker around the box.

Use a small hobby knife or similar to cut the Xs in all of the screw holes on the sticker.

Don't forget that there are two on the back as well.

Next carefully cut out the button holes.

When cutting out the box for the screen, we recommend using some kind of straight edge.

Finally, cut out the outside edge of the entire sticker.

Even cut the back and sides, but be careful not to cut across the sticker on the line or otherwise.

The result will be one piece with two folds in it as shown below.

The next step is to poke the 4 screws through the holes on the front face.

Once they are through, you should add two nuts to the back of the top two screws, and the standoffs should go on the lower two screws.

Now you can set your electronics onto the screw mounts you have just created.

In order to cinch the securing nuts on the LCD, simply wiggle the board around the nut before you tighten it all the way. In the image below, the left side is complete and the right side has just been wiggled over the nut and can now be tightened down and secured.

The securing nuts for the button board will slide right on without any tricks.

To complete the case, fold the case around the electronics and poke the screws through the final two holes securing them with nuts.

Grab the power supply out of your kit and plug it into the mini-b port on the side of your project.

Now you are ready to use your brand new alarm clock

 

Congratulations, you can now use your new Alarm Clock!

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