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User talk:Daveb: Difference between revisions
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New link [http://www.mikrocontroller.net/attachment/14850/BikeLight.pdf on impedance matching and MCU control] of bike lights :). I am not sure what this means for my circuit and plans. | New link [http://www.mikrocontroller.net/attachment/14850/BikeLight.pdf on impedance matching and MCU control] of bike lights :). I am not sure what this means for my circuit and plans. | ||
==Indicator LED== | |||
The voltage regulator requires some current draw for stability, and I dont want it to go haywire is the MCU stops n a breakpoint and dosnt eat enuf current... and I would like to have an 'I am working LED' that is pointing at me... | |||
The minimum current is 1mA, so I have picked a 2mA red LED (should preserve night vision and show up well during the day) from Farnells catalog. | |||
* [http://uk.farnell.com/vishay/vlms30k1l2-gs08/led-plcc2-red/dp/1328349 18mcd, 60degree, SMD LED] looks fancy in the jpg and is cheap - £0.51 for 5. | |||
==Switches for LED current== | ==Switches for LED current== | ||
