2020-07-13

July 22, 2020•108 words

Internet connection dropped at least twice today.
Peter re-scheduled our weekly chat to tomorrow evening, without an internet connection that would probably be for the best.

Saw a repo claiming most DS18B20 sensors are clones, and provided Arduino code to discover and classify each DS18B20. The two waterproof DS18B20 I purchased are D1 type clones. Apparently they are noisy, and have supercapacitors instead of EEPROM for alarms. Though the author also claims that these clones have a 3 C offset at 0 C, but my calibrations dispute that. Perhaps his statements were about the type on average, unless I have a 2 C systematic error in my measurements.

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2020-07-12

July 22, 2020•153 words

Mike and Lisa came to visit today, and they had a great time with Parisa. She also had a great time with both of them, an improvement compared to even a few months ago when she would freak out whenever she encountered Mike. I tried to get record the serial transmissions from the HC-05 using the Logic Analyzer, bypassing the Arduino and using a USB-to-TTL (FTDL) board. I could observe the signals being sent, but the HC-05 never responded. I tried different baud rates, line endings, putting the H...

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2020-07-14

July 22, 2020•74 words

The city finally came by to cut down the dead tree in our front yard, only took them six months. I hope I do not have to wait six months or more for them to replace the tree. Went for a bike ride this evening, feeling extra tired. I did not get a chance to chat with Peter this evening, perhaps he decided to crash early. Testing HC-05 again, but mostly relaxing this evening. ...

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2020-07-13

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2020-07-12

2020-07-14

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