Update README.md

Update README.md

Just some cleanup (#2)

Temp. "log", Unifont, LNA 50 Ohm + high sensitivity

Some cleanup, simplify, comments

Minor changes ...

- RC calibration is done automatically at power-up
- set RSSI threshold to recommended default

Do not block CPU while waiting to receive temp. reading (#1)

Don't clear whole screen between temperature updates

Display received temperature on a nice IPS TFT

Display received temperature on a nice IPS TFT

Fix typo

Fix typo

Add screenshot of GTKTerm

Improve transmission reliability and range

Improve transmission reliability and range

Measure & tx temp, save some power ...

- measure temp. with an MCP9808 and transmit it every ~32 seconds
- try to save power, idle current ~57 uA, seems still a lot

Add I2C, some cleanup

Reduce program size

Functions to transmit and receive an array of bytes

Small optimization

Print whole packet, transmit string, cleanup

Simple Tx-Rx working

TX and RX works - somewhat ...

- both modules don't talk to each other yet, probably some
  initialization is missing

TX and RX works - somewhat ...

- both modules don't talk to each other yet, probably some
  initialization is missing

Try to send a byte and receive it...

Send a string

Implement sending one byte

Add picture to README.md

Set carrier frequency

Write and read single register