Ihr Warenkorb ist leer
Ihr Warenkorb ist leer
Hochwertige Materialien: hochwertiges ABS-Kunststoff, stabiler.
Betriebsspannung: DC 2.5V bis 5,5 V.
Umfang der Arbeiten：Temperaturbereich -40 °C bis 80 °C, Luftfeuchtigkeit 0 - 100 % relative Luftfeuchtigkeit.
Messgenauigkeit: Temperatur ± 0.5 ℃, Feuchtigkeit ± 3% RH (25 ℃)
Ausgangssignal: I2C, digitaler Ausgang; Signalübertragung über lange Distanzen.
msnshr
Bewertet in Deutschland am 10. Januar 2025
this is a DHT20 sensor with I2C address = 0x38,also some code exist named DFRobot_DHT20 and datasheet is available.form datasheet:1.After power-on, wait no less than 100ms. Before reading the temperature and humidity value, get a byte of status word by sending 0x71.If the status word and 0x18 are not equal to 0x18, initialize the 0x1B, 0x1C, 0x1E registers,details Please refer to our official website routine for the initialization process; if they are equal, proceed to the next step.2.Wait 10ms to send the 0xAC command (trigger measurement). This command parameter has two bytes, the first byte is 0x33, and the second byte is 0x00.3.Wait 80ms for the measurement to be completed, if the read status word Bit [7] is 0, it means the measurement is completed, and then six bytes can be read continuously; otherwise, continue to wait.4.After receiving six bytes, the next byte is the CRC check data. The user can read it out as needed. If the receiving end needs CRC check, an ACK will be sent after the sixth byte is received. Reply, otherwise send NACK to end, the initial value of CRC is 0XFF, and the CRC8 check polynomial is:CRC [7:0] = 1+X^4+X^5+X^85.Calculate the temperature and humidity value... SEE DATASHEET
TheBadB
Bewertet in Deutschland am 27. Mai 2024
I bought this sensor for a University project.While the sensor does work for measuring temperature I start to question if it can actually measure humidity. It is impossible to find a datasheet for this sensor. I had to find out the I2C address through testing of my own, for anybody having the same problem: the address is 0x38 or 56 in decimal.However, I bought several cheap components before but never was it impossible to find a datasheet for it. Or at least which product it is a copy of, which usually means this copied products datasheet can be used. Not in this case.It is quite an accurate temperature sensor though, the humidity sensing has yet to be discovered.2 Stars is quite fair, for net getting what I ordered.
Produktempfehlungen
