Octasonic HC-SR04 Breakout Assembly Instructions
Use this diagram as a guide when soldering the components to the board. There are only two components that need to be oriented a certain way and those are the ATMEGA microcontroller (notch should be at the top) and the LED (flat side should be at the top).
The ATMEGA IC is pre-loaded with the firmware for the board.
Suggested order of soldering:
- Resistors (8 x 2.2k plus 1 x 330 ohm for the LED)
Note that it is not essential to solder the 2x3 AVR header unless you want to burn new firmware onto the board.