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**Egyptian** · 01-01-2007, 03:24 AM

i will post a pic of robocon egypt 2006, i participated , i saw some real problems , as u see the ambient light is very heavy and shielding didnt work

, also we were using LDR , the overall results were very bad ...

well, the circuit was an ultrabright red led , and Ldr connected in series with a 10k to vcc (5v) and the output is connected to an inverter ... and we put a pot in series with the Ldr to calibrate ...

well , what i intend to use this year is to modulate the emitter at a certain frequency and i will use a high pas filter ok but i want also to use the inverter circuit like i used last year , would that work ? and would that help in that enviroment ( heavy light ) .

01-01-2007, 03:24 AM	#1
Egyptian Nhập môn đệ tử Tham gia ngày: Oct 2006 Bài gửi: 7 :	Real Problems i will post a pic of robocon egypt 2006, i participated , i saw some real problems , as u see the ambient light is very heavy and shielding didnt work , also we were using LDR , the overall results were very bad ... well, the circuit was an ultrabright red led , and Ldr connected in series with a 10k to vcc (5v) and the output is connected to an inverter ... and we put a pot in series with the Ldr to calibrate ... well , what i intend to use this year is to modulate the emitter at a certain frequency and i will use a high pas filter ok but i want also to use the inverter circuit like i used last year , would that work ? and would that help in that enviroment ( heavy light ) .