Paidong Industrial Zone Qiligang,Yueqing City,Zhejiang province,China.
In the rapidly evolving world of smart homes and industrial automation, the ability to efficiently parse and interpret data from devices is crucial. The Tuya API stands out as a beacon in this realm, offering insights into critical electrical parameters like current, voltage, and power. This article takes you on a journey through the intricacies of Tuya’s data points (DP) and the techniques employed for data extraction and interpretation.
Tuya’s representation of electrical data points, specifically for current, voltage, and power, uses specific codes such as phase_a, phase_b, and phase_c. An example of this representation is “{code: “phase_a”, value: “COkAABUAAAU=”}”. But how do we decipher this value?
Base64 Decoding: The first step involves translating the Base64 encoded data. There is online tool available:
Base64 to hex: Encode and decode bytes online – cryptii
to assist in this decoding process.
Hexadecimal Representation: Once decoded, you might obtain a string like
“08 e9 00 00 15 00 00 05”.
Utilizing programmer’s calculators, we can interpret this hexadecimal string.
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The initial “08 e9” (2 bytes) represents voltage in volts (V). By converting it to its decimal representation and dividing by 10, we derive the voltage value as 228.1V (2281/10).
The next segment “00 00 15” (3 bytes) indicates current in amperes (A). Converting this to its decimal equivalent and dividing by 1000 gives us the current value of 0.021A (21/1000).
Lastly, the “00 00 05” segment (3 bytes) denotes power in watts (W). Its direct decimal equivalent reveals the power value as 5W.
tongou was established in 1993 and is the trademark of Changyou Technology. We position ourselves as providers of intelligent product solutions for high and low voltage electrical systems, taking on solving customers’ pressures and challenges as our responsibility and creating value for them. We utilize intelligent products to serve global customers, making life smarter and more convenient to benefit your life.
Paidong Industrial Zone Qiligang,Yueqing City,Zhejiang province,China.
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