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Nice project..."ESP-01 has only two pins.."With the ESP-01, you can use the RX and TX also as regular pins when not programming - so eg. two of the pins are easily usable for I2C devices like graphic displays leaving you two inputs free.There is also info out there for soldering on more wires to get access several more pins on the chip that are not connected be default.I like these ESP modules because they are so tiny and use so little power
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Use the original pins from the lock and reassemble maybe - as long as the height and order of the pins in the lock aren't changed you can use the same key.Nice tip using the drill as a lathe - worth the instruct-able just for that.
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Thanks for the breakdown - I find the China sites great for supplies like these at a fraction of the cost of the more usual shops, (at the expense of 3 to 4 week postage times) - this is a good site and would have most of the electrical, painting and magnet items on your expense sheet.http://www.banggood.com/ There are even cheaper sites (like aliexpress) - but I prefer the above as its just the one seller you are dealing with.
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Yes - That would be great thanks :)This Ethernet shield is great to work with!
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Yes - That would be great! Thanks for making great ethernet chips we can use with the Arduino :)If you let me know the link when its there I'll update the instructable with it.
You could try the calculators in the link below to get the correct value - as stated here, it will kind of work without the resistor (no resistor limits the lifespan of the LED) - but adding a resistor will make your AA batteries last longer as it will allow you to reduce the current taken from the batteries.http://www.instructables.com/id/Choosing-The-Resis...
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