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Reply to "HC-SR04 ultrasonic sensor for outdoor layout block detection"

@Rod Stewart posted:

Zachariah, the voltage on pin 3 of the 7805 should be pretty much 5 vdc, spot on. Your board should have the 7805 oriented as shown in Stan's pic above of 3/11, with the tab facing inwards and the inscription outwards. Grj revised this orientation on later boards to that shown in the 4/27 view. But I believe all original kits of grj's are as per 3/11. Grj will maybe confirm this.

Rod

Correct, the first spin of the boards were the top picture.  I did a second one that I didn't buy any boards from.

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