WordClock-3 Assembly Guide 2/25/20 Version 0.6
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Step 1 – Build the Main Board
Install 12, 12 pin female headers on the top of the board.
Cut the 40 pin female header into two, 17 pin pieces. Install at the U4 location.
DO NOT solder the microcontroller to the board!
Build the 5v supply on the main board. Install J1, F1, C1, C2, C3, D1, D2, L1, and U1.
Note that C1, C2, D1, and D2 must be installed in the direction noted on the board.
Connect a 12v-18v power supply with a center positive, 2.1mm connector to J1, and
check the test point for 5v. Do not continue assembly if 5v is not present at the test
point.
