RECEIVER.md: clarify pins in use by acquire.py.

diff --git a/RECEIVER.md b/RECEIVER.md
index 309220829ca45e71a67499097139fc230b900187..fe1493efbcd4d02e3418e0aa1a21a8c9dd498440 100644 (file)
--- a/RECEIVER.md
+++ b/RECEIVER.md
@@ -22,13 +22,13 @@ compliant hosts too.
 The pin used to connect the decoder chip to the target is arbitrary. The test
 program `acquire.py` uses the following pins by default:
 
-| Host    | Pin |
-|:-------:|:---:|
-| Pyboard | X3  |
-| ESP32   | 23  |
-| ESP8266 | 13  |
-| D1 Mini | D7  | WeMos naming convention for pin 13.
-| Pico    | 16  |
+| Host    | Pin | Notes |
+|:-------:|:---:|:-----:|
+| Pyboard | X3  |  |
+| ESP32   | 23  |  |
+| ESP8266 | 13  |  |
+| D1 Mini | D7  | WeMos name for pin 13. |
+| Pico    | 16  |  |
 
 A remote using the NEC protocol is [this one](https://www.adafruit.com/products/389).