[wxsig] Humidity and Pressure Sensor Support
Phil Reid phil at pixelogix.comMon Feb 14 07:08:59 UTC 2005
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Hello all, Utilizing RJ-11 connectors, the one-wire bus should be as follows .... pin 2 -- ground pin 3 -- 1-wire data pin 4 -- 1-wire ground pin 5 -- pwr +5 VDC When I first assembled the TAI8515 ver. 2.0, with the T-238, it required pin 2 to have power and pin 5 to be ground. I modified the T-238 to match the TA8515. This was an error. I should have modified the TAI8515 to match the T-238 which is layed out correctly for the one-wire bus. Acquiring the TAI8570 and putting it on the modified one-wire bus, I got the same message Jerry received, and scratched my head for a couple of hours. I acquired the RJ-11 connection specifications for each device and I realized what had taken place. I returned the T-238 to its original design, and modified the TAI8515 to match. I now have the T-238 with the latest firmware, supporting and powering the TAI8570/Barometer, TAI8540/Humidity, TAI8585/Counter with rain gauge, and a TAI8515/Anemometer, all on the one-wire bus. 73's phil/w7oze
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