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electronics:sensor [2019/05/14 22:30]
hansel
electronics:sensor [2019/05/14 22:34] (huidige)
hansel [Using the TCRT1000 and TCRT5000]
Regel 12: Regel 12:
   * When R2 is high (e.g. 22k), the sensor is quite sensitive to ambient light, an it detects white objects up to 2-3 cm. I found 2k2 to be a better value (much less sensitive to ambient light, detection range 5-10 mm   * When R2 is high (e.g. 22k), the sensor is quite sensitive to ambient light, an it detects white objects up to 2-3 cm. I found 2k2 to be a better value (much less sensitive to ambient light, detection range 5-10 mm
   * When connecting the output directly to a digital input, the switch threshold is not well defined (0.5-1.5 V, depends on hardware)   * When connecting the output directly to a digital input, the switch threshold is not well defined (0.5-1.5 V, depends on hardware)
-  * It it much better to measure the output with a ADC+  * It is much better to measure the output with a ADC: trigger level is well known, can be calibrated for ambient light and can be changed without hardware modifications!
 <WRAP pagebreak>​ </​WRAP>​ <WRAP pagebreak>​ </​WRAP>​
 ====== Test circuit and software ====== ====== Test circuit and software ======
electronics/sensor.txt · Laatst gewijzigd: 2019/05/14 22:34 door hansel