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2y0a21 distance sensor
Posted:
Wed Mar 24, 2010 5:14 pmby gua_aku
i already test my sensor and intergrade with programming...and also already measure the output voltage,the output almost same acroding to the datasheet for below then 80cm...the problem is when the in front object with distance over then 80cm the output signal up to 1.2V.almost same with distance 20cm. what actually happen?it is my sensor was damaged?
somebody help me..
Re: 2y0a21 distance sensor
Posted:
Thu Mar 25, 2010 11:38 amby joliza
Refer to analog distance datasheet
http://www.cytron.com.my/datasheet/sens ... 0A21YK.pdf, the output voltage will decrease when the distance is increase. But it is valid only for distance range from 20cm - 80cm.
Re: 2y0a21 distance sensor
Posted:
Thu Mar 25, 2010 1:37 pmby gua_aku
emm....tq you are right..i already refer on the datasheet but my problem is why my ouput voltage for distance over than 80cm is about 1.5V.?whether the sensor is broken?
Re: 2y0a21 distance sensor
Posted:
Fri Mar 26, 2010 1:01 pmby sich
What's the analog reading for distance between 20 to 80cm? Can you check it out and let us know?
Re: 2y0a21 distance sensor
Posted:
Fri Mar 26, 2010 5:32 pmby gua_aku
Distance
(cm) Output Voltage (V)
10 2.47
20 1.84
30 0.94
40 0.73
50 0.61
60 0.53
70 0.5
80 0.4
Re: 2y0a21 distance sensor
Posted:
Fri Mar 26, 2010 7:27 pmby ober
seem that the sensor working fine. Anyway the data sheet of state that detection range is from 10 to 80, even the graph also show the voltage until 80 cm only, thus I would say that out of the range it can be any voltage.