thanks @alowhum !
so i'll just need 1 (one) like this for my gateway http://s.click.aliexpress.com/e/c4CU7enO ?
could you post (pm) me an example for a "red eByte module" (your link for "nano wireless board" leads to searchpage for "nrf24l01 ebyte" - but they are all green...)? i usually have to wait ~60 days until i get my aliexpress orderer items, so i really would like to get the "right one" with my first order...
and what's up with the nano wireless board?
oh boi. had to connect the radio to the board mentioned in the opening post:
and connect the other boards to my raspberry... now it seems to work! unfortunately i can't test it because i'm not able to upload anything to my Sensebender Micro boards. now i'm waiting for my new ftdi programmer 
alright! now with new programmer a was able to upload the "standard" sketch to my sensebender micro and the gateway even gets "something":
Nov 14 20:11:52 DEBUG TSF:MSG:READ,3-3-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
Nov 14 20:11:52 DEBUG TSF:MSG:BC
Nov 14 20:11:52 DEBUG TSF:MSG:FPAR REQ,ID=3
Nov 14 20:11:52 DEBUG TSF:PNG:SEND,TO=0
Nov 14 20:11:52 DEBUG TSF:CKU:OK
Nov 14 20:11:52 DEBUG TSF:MSG:GWL OK
Nov 14 20:11:52 DEBUG TSF:MSG:SEND,0-0-3-3,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=O K:0
Nov 14 20:11:54 DEBUG TSF:MSG:READ,3-3-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
Nov 14 20:11:54 DEBUG TSF:MSG:PINGED,ID=3,HP=1
Nov 14 20:11:54 DEBUG TSF:MSG:SEND,0-0-3-3,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st= OK:1
Nov 14 20:11:54 DEBUG TSF:MSG:READ,3-3-0,s=255,c=4,t=0,pt=6,l=10,sg=0:FFFFFFFFFF FFFFFF0300
Nov 14 20:11:54 DEBUG GWT:TPS:TOPIC=mysensors-out/3/255/4/0/0,MSG SENT
Nov 14 20:11:54 DEBUG TSF:MSG:READ,3-3-0,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
Nov 14 20:11:54 DEBUG TSF:MSG:SEND,0-0-3-3,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st= OK:0100
Nov 14 20:11:54 DEBUG TSF:MSG:READ,3-3-0,s=255,c=0,t=17,pt=0,l=5,sg=0:2.1.1
Nov 14 20:11:54 DEBUG GWT:TPS:TOPIC=mysensors-out/3/255/0/0/17,MSG SENT
Nov 14 20:11:54 DEBUG TSF:MSG:READ,3-3-0,s=255,c=3,t=6,pt=1,l=1,sg=0:0
Nov 14 20:11:54 DEBUG GWT:TPS:TOPIC=mysensors-out/3/255/3/0/6,MSG SENT
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=255,c=3,t=11,pt=0,l=17,sg=0:Sensebend er Micro
Nov 14 20:11:56 DEBUG GWT:TPS:TOPIC=mysensors-out/3/255/3/0/11,MSG SENT
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=255,c=3,t=12,pt=0,l=3,sg=0:1.4
Nov 14 20:11:56 DEBUG GWT:TPS:TOPIC=mysensors-out/3/255/3/0/12,MSG SENT
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=1,c=0,t=6,pt=0,l=0,sg=0:
Nov 14 20:11:56 DEBUG GWT:TPS:TOPIC=mysensors-out/3/1/0/0/6,MSG SENT
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=2,c=0,t=7,pt=0,l=0,sg=0:
Nov 14 20:11:56 DEBUG GWT:TPS:TOPIC=mysensors-out/3/2/0/0/7,MSG SENT
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=255,c=3,t=26,pt=1,l=1,sg=0:2
Nov 14 20:11:56 DEBUG TSF:MSG:SEND,0-0-3-3,s=255,c=3,t=27,pt=1,l=1,sg=0,ft=0,st= OK:1
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=1,c=1,t=0,pt=7,l=5,sg=0:24.7
Nov 14 20:11:56 DEBUG GWT:TPS:TOPIC=mysensors-out/3/1/1/0/0,MSG SENT
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=2,c=1,t=1,pt=2,l=2,sg=0:55
Nov 14 20:11:56 DEBUG GWT:TPS:TOPIC=mysensors-out/3/2/1/0/1,MSG SENT
Nov 14 20:11:56 DEBUG TSF:MSG:READ,3-3-0,s=255,c=3,t=0,pt=1,l=1,sg=0:88
Nov 14 20:11:56 DEBUG GWT:TPS:TOPIC=mysensors-out/3/255/3/0/0,MSG SENT
is this right? and if so, how can i translate all this stuff? 
ohhhhhhh. this makes sense:
[20:17:18] openhabian@openHABianPi:~$ mosquitto_sub -t mysensors-out/#
22.3
61
cool cool. now i just have to figure out how to define my items on the openhab part!
cheers