I received a brand new ICOM IC-725 for collection and research. I found it easy to operate and good at receiving. However, the frequency had a 70HZ deviation. The voice of the HAM was out of tune at t...
I recently participated in the school's electronic design competition, the topic was a simple wind tunnel, but I don't have the knowledge, so I turned to the masters of this site to teach me how to de...
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I would be satisfied if I could understand the data that is ultimately exposed to the air during a Bluetooth transmission, and then parse and understand it.
I searc...
Flower watering indicator
Author: Zhang Zezhong
Flowers are loved by everyone. Many people like to grow flowers. The flowers they just bought are gorgeous and colorful, but after a few days, the flowe...
How to understand the alarm performance of 14 or more half-cycles of arc faults in 1s in GB14287.4 "Electrical Fire Monitoring System Part 4: Arc Fault Detector"? How to understand the alarm performan...