I just purchased the ThunderBoard I2C Lightning Detector with Grove Connectors and I'm using an Arduino uno r3 wired thusly:
ThunderBoard -> Arduino ================ SCL ->A5
INT -> Nothing
When I plug the Arduino in, the INT LED light on the ThunderBoard lights up white, and stays lit. When I run the I2C scanner, it just stops and never returns from the Wire.endTransmission(). Any help would be most appreciated!
I also tried the I2C scanner you posted for JimK on the forum (http://forum.switchdoc.com/thread/810/lightning-detector-simulator-working-arduino), and that never returns from the first Wire.endTransmission() call.
It seems the ThunderBoard just isn't responding. Your thoughts?
With the Thunderboard disconnected, the i2c scanner completes the scan, reports that it finds no I2C devices, and repeats the scan every 5 sec. When the Thunderboard is connected, it never returns from the very first call to wire.endTransmission(). I replaced the Thunderboard with another I2C device I have, and it finds that properly.