Ever have to count laps, or people, or anything else manually?
Here's how to convert a dollar store pedometer into a manual counter!
Step 1: Gather Your Materials
Dollar store pedometer
Miniature momentary SPST switch
Wire, hot glue
Step 2: Remove Screws From the Pedometer and Clip
4 screws on the back, 2 inside for the clip
Step 3: Identify Spring and Weight, and Remove Them
Step 4: Mark Site for Pushbutton Switch
This shows the spring and weight removed.
Place an X on the unused area of the PCB to use as a guide to place another X on the back of the case where the switch will be located.
Step 5: Drill Hole for Switch
Hole is 11/64".
Step 6: Hot Glue Switch to Inside of Case
The push button of the switch should be in the hole you just drilled.
Apply ample hot glue to lock the switch in place.
Step 7: Tin the Wires, Battery Clip, and Spring Contact Point
It helps to roughen up the sites to be soldered.
Step 8: Solder Wires to Switch and Contact Points
Cut off excess from the switch leads so the case can be closed.
Step 9: Reassemble Case
Notice that the push button may not protrude through the hole you made.
If so, you will need to add some height to the button (next step).
Step 10: Add Height to the Push Button
I used self-stick bling from the dollar store; worked perfectly.