diff --git a/README.md b/README.md
index c88baaa..1a95e28 100644
--- a/README.md
+++ b/README.md
@@ -11,12 +11,39 @@ Here's a short list of the different programs and what they do:
 
 - **rs485_receive.py**: receives utf-8 encoded strings and prints them out as soon as a \n is received.
 
-- **rs485_pingpong.py**: this implements a simple ping-pong over two channels (4 converters needed). For more information, see [Wiring].
+- **rs485_pingpong.py**: this implements a simple ping-pong over two channels (4 converters needed). For more information, see [[Wiring]].
+
+
+## Prerequisites
+
+To be able to run all the examples successfully, you need two MicroPython-enabled Microcontrollers (Raspberry Pi Pico 1 tested) and 4 TTL-UART to RS485 converters, with two of them connected to each μController (see [[Wiring]]). 
+Also, both microcontrollers should have MicroPython running on them (at time of writing this the latest tested version was 1.23.0).
+
+If you met all these requirements, let's start wiring the parts together!
 
 
 ## Wiring 
 
-TODO
+For the (simple) send and receive programs, theres just to devices with MicroPython (rp2 flavor tested) needed, as well as two TTL-UART to RS485 converters, one connected to each of them. For the ping-pong example, you will need two channels (one for sending and one for receiving) for each MicroPython device. When using WaveShares Pico 2-Channel HAT, no wiring (between converters and microcontroller) is needed at all!
+
+Just wire two MicroPython devices as shown below (obviously connect different converters to the different microcontrollers ;)
+
+| Converter                                 | Pin on converter     | Pin on Pi Pico<sup>1</sup>  |
+| ----------------------------------------- | -------------------- | --------------------------- |
+| TTL-UART to RS485 converter 1             | DI (driver in)       | GP0 (UART0 TX)              |
+| TTL-UART to RS485 converter 1             | RO (receiver out)    | GP1 (UART0 RX)              |
+| TTL-UART to RS485 converter 1             | DE (driver enable)   | GP2 (set HIGH/LOW)          |
+| TTL-UART to RS485 converter 1             | RE (receiver enable) | GP2 (set HIGH/LOW)          |
+| TTL-UART to RS485 converter 2<sup>2</sup> | DI (driver in)       | GP4 (UART1 TX)              |
+| TTL-UART to RS485 converter 2<sup>2</sup> | RO (receiver out)    | GP5 (UART1 RX)              |
+| TTL-UART to RS485 converter 2<sup>2</sup> | DE (driver enable)   | GP3 (set HIGH/LOW)          |
+| TTL-UART to RS485 converter 2<sup>2</sup> | RE (receiver enable) | GP3 (set HIGH/LOW)          |
+
+[<sup>1</sup>] as I used the Pico, adjust for your favourite microcontroller (but don't forget also changing the pinout in the programs as well1)
+
+[<sup>2</sup>] only needed for the ping pong example
+
+Then, connecting the A+, B- and GND wires of the respective converters together (converter 1 of μC1 to converter 1 of μC2, converter 2 of μC1 to converter 2 of μC2), you've just created a simple RS485 bus! Now upload the scripts to both Microcontrollers and try what you want to try!
 
 
 ## Useful links