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Update 'readme.md'

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Bryan 2021-04-25 20:15:30 -06:00
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@ -7,3 +7,5 @@
* Use RX pin on ESP-01 for input because GPIO0 and GPIO2 seem to cause boot issues because of internal pull up resistors. * Use RX pin on ESP-01 for input because GPIO0 and GPIO2 seem to cause boot issues because of internal pull up resistors.
* The 3v3 output pin on the RCWL does not supply sufficient current to power ESP-01 * The 3v3 output pin on the RCWL does not supply sufficient current to power ESP-01
* RCWL is 5v powered * RCWL is 5v powered
![homie-rcwl-schematic](./homie-rcwl-schematic.png)