How to use the daylight sensor signal

ymc30 · Mar 19th, 2014, 12:33

With my DRL project I got to a point where everything works as expected but I would like to switch on/off the _normal_ light (dipped beam) automatically depending on light conditions.

Easy way would be to use the built in daylight sensor which switches the dash light. Any idea how to use its signal?

And where exactly is it on a 2007 C30?

Thanks

Missing Lincs · Mar 19th, 2014, 16:51

To keep things positive, if you want a daylight sensor I'd suggest you install your own. That way you have access to the output from your circuit to do as you wish.

I think you've already answered your own question in your previous topic. The CAN-Bus is laughing at you, the signal is encoded into the stream of data along with many, many others. To get at the signal you need a decoder and knowledge of what code to program into the decoder.

Do what you seem to do best and add on, a light sensor could be as simple as an LDR (Light Dependant Resistor), an op amp and a few resistors, by making one of the resistors variable you can control the light level at which the circuit switches on/off.

Missing Lincs · Mar 19th, 2014, 16:54

Have a look about 2/3 down this page http://www.electronics-tutorials.ws/opamp/opamp_5.html

mattievrs · Mar 19th, 2014, 23:11

The sensor is in the alarm flashing led in the top of the dash. But as said above, sort your own circuit and sensor out as it's a lot simpler to do.

ymc30 · Mar 26th, 2014, 20:33

Thanks guys for the contributions - I will go with my own setup then.

Would this be something to consider?

Missing Lincs · Mar 26th, 2014, 21:31

Quote:

Originally Posted by ymc30

Would this be something to consider?

Perfect I'd say. It looks very similar to a kit made by Velleman and sold in the UK by Maplin. If needed you can always take the sensor off the board and mount it on longer wires to help with fitting.

Missing Lincs · Mar 26th, 2014, 21:35

Correction to the above, the kit is now sold by Quasar http://www.quasarelectronics.co.uk/I...ive-switch-kit

ymc30 · Mar 27th, 2014, 01:21

Quote:

Originally Posted by Missing Lincs

you can always take the sensor off the board and mount it on longer wires to help with fitting.

just what I've thought

Mar 19th, 2014, 12:33	#1
ymc30 Member Last Online: Jun 15th, 2022 18:57 Join Date: Nov 2013 Location: London	How to use the daylight sensor signal With my DRL project I got to a point where everything works as expected but I would like to switch on/off the _normal_ light (dipped beam) automatically depending on light conditions. Easy way would be to use the built in daylight sensor which switches the dash light. Any idea how to use its signal? And where exactly is it on a 2007 C30? Thanks __________________ You've got grease on your fingers / Oil on your face / Happy completely chasing the pace [Chris Rea] C30 SE Lux 2.0D / V70 D4 SE Lux / Miata NCFL 2.0 Sport Tec Sold: C70 T5 / several C30s in different flavours / V50 D4 Geartronic

Mar 26th, 2014, 20:33	#5
ymc30 Member Last Online: Jun 15th, 2022 18:57 Join Date: Nov 2013 Location: London	Thanks guys for the contributions - I will go with my own setup then. Would this be something to consider? __________________ You've got grease on your fingers / Oil on your face / Happy completely chasing the pace [Chris Rea] C30 SE Lux 2.0D / V70 D4 SE Lux / Miata NCFL 2.0 Sport Tec Sold: C70 T5 / several C30s in different flavours / V50 D4 Geartronic

Mar 19th, 2014, 16:51	#2
Missing Lincs Premier Member Last Online: Today 09:00 Join Date: Jan 2010 Location: Louth	To keep things positive, if you want a daylight sensor I'd suggest you install your own. That way you have access to the output from your circuit to do as you wish. I think you've already answered your own question in your previous topic. The CAN-Bus is laughing at you, the signal is encoded into the stream of data along with many, many others. To get at the signal you need a decoder and knowledge of what code to program into the decoder. Do what you seem to do best and add on, a light sensor could be as simple as an LDR (Light Dependant Resistor), an op amp and a few resistors, by making one of the resistors variable you can control the light level at which the circuit switches on/off.

Mar 19th, 2014, 16:54	#3
Missing Lincs Premier Member Last Online: Today 09:00 Join Date: Jan 2010 Location: Louth	Have a look about 2/3 down this page http://www.electronics-tutorials.ws/opamp/opamp_5.html

Mar 19th, 2014, 23:11	#4
mattievrs Master Member Last Online: Sep 3rd, 2020 12:03 Join Date: Mar 2013 Location: Leicester	The sensor is in the alarm flashing led in the top of the dash. But as said above, sort your own circuit and sensor out as it's a lot simpler to do.

Mar 26th, 2014, 21:35	#7
Missing Lincs Premier Member Last Online: Today 09:00 Join Date: Jan 2010 Location: Louth	Correction to the above, the kit is now sold by Quasar http://www.quasarelectronics.co.uk/I...ive-switch-kit

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