diff --git a/MAPID-CP/Makefile b/MAPID-CP/Makefile
index d1fb226..930350f 100644
--- a/MAPID-CP/Makefile
+++ b/MAPID-CP/Makefile
@@ -67,13 +67,18 @@
 
 MAKE_DIR   := $(PWD)
 #
+# List all FQBNs:
+#    arduino-cli board listall
+# 
 # ----- setup wor Wemos D1 mini -----
 #FQBN       ?= esp8266:esp8266:d1_mini
 #IOT_NAME   ?= esp8266-meteo
 #OTA_PORT   ?= 8266
 #OTA_PASS   ?=
 # ----- setup for Arduino Uno
-FQBN        ?= arduino:avr:uno
+#FQBN        ?= arduino:avr:uno
+# ----- setup for Arduino Duemilanove or Diecimila 
+FQBN        ?= arduino:avr:diecimila
 # ----- ---------------------
 V          ?= 0
 VFLAG      =