Cornerz Posted July 22, 2014 Posted July 22, 2014 Hi All, Has anyone else had issues with a wireless bike computer (Sigma 1606) cutting out (signal loss) as soon as a bar mounted night-light is turned on? Seems that it is the proximity of the battery that affects it. Any issues with GPS based computers? Thanks
hboli4 Posted July 22, 2014 Posted July 22, 2014 Have experienced similar issues with a Giant wireless computer, as soon as I switch on the light readings become erratic and inaccurate.
Vangar Posted July 22, 2014 Posted July 22, 2014 I use a Wireless Cateye Velo, no issues at all, mounted on top of stem with battery below. Also, to comply with FCC rules any electronic device must accept any interference, so if that's happening it might be a fault in the computer.
Raydek Posted July 22, 2014 Posted July 22, 2014 Weird that this was just posted. Went for a ride this morning with a new light and my Polar CS200 gave erratic cadence readings also only recorded about half the distance cycled... Never done this before..
Flowta Posted July 22, 2014 Posted July 22, 2014 I believe it's got to do with the circuitry that creates a PWM frequency to adjust the brightness of the light. This can have an effect on certain wireless tech Cornerz 1
hboli4 Posted July 22, 2014 Posted July 22, 2014 I believe it's got to do with the circuitry that creates a PWM frequency to adjust the brightness of the light. This can have an effect on certain wireless tech Think you have a point, my computer only went haywire when adjusting the brightness.
Raydek Posted July 22, 2014 Posted July 22, 2014 Can anything be done to solve the issue? Is there a certain range to the PWM frequency, so the light must be mount further away from computer?
Flowta Posted July 22, 2014 Posted July 22, 2014 Can anything be done to solve the issue? Is there a certain range to the PWM frequency, so the light must be mount further away from computer? I'm not sure, trial and error I guess
Raydek Posted July 22, 2014 Posted July 22, 2014 I'm not sure, trial and error I guess I'll try some options and report back... Quick search brought this up...http://bicycles.stackexchange.com/questions/1556/stopping-interference-between-led-lights-and-wireless-cycling-computer
Quincy Posted July 22, 2014 Posted July 22, 2014 I just moved my light and Polar watch further apart, now they don't interfere with each other.
Cornerz Posted July 22, 2014 Author Posted July 22, 2014 Thanks guys... good to know it's not just me. It seemed to have more to do with the position of the battery than the light - but will experiment a bit more.
Raydek Posted July 22, 2014 Posted July 22, 2014 I just moved my light and Polar watch further apart, now they don't interfere with each other. Good to hear, will give it a try.. Quincy 1
Skinnyone Posted July 22, 2014 Posted July 22, 2014 Yes the battery will cause interference. Do some research into the magnetic effects of electricity...the only thing you can do is move the battery/ computer further apart.
Raydek Posted July 22, 2014 Posted July 22, 2014 A snippet from the link above.. Mine is from eBay (China)... The problem is the current controller built into the LED bulb has no or ineffective EMC suppression. This is extremely common in cheap equipment from unbrand named suppliers, who save costs by not going though the rigourous CE or FCC testing requirements. They also cut costs by not placing components (usually a small cap is all thats needed), and lay out the board poorly so it radiates noise.
Skinnyone Posted July 22, 2014 Posted July 22, 2014 - part 2 showing how a battery can change a GPS/compass reading and i.e. any wireless computer around it. Cornerz and Raydek 2
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