Nov 192016
 

I was looking for a recipe of something my grandma made. She called it “Gebackenes Zeug” which unfortunately is not a proper name. it contained Quark and mashed potatoes, but that’s all I knew. But today I found something which is at least similar if not identical except for the shape: Sächsische Quarkkeulchen. Here the recipe:

Zutaten für die Quarkkeulchen
500g Pellkartoffeln
500g abgetropfter Magerquark
150g Mehl
40g Zucker
70g Rumrosinen
Mark von ½ Vanilleschote
1 Eigelb
Abrieb von ½ Zitrone
Butterschmalz zum Braten
Puderzucker zum Bestäuben

Zubereitung der sächsischen Quarkkeulchen
1.    Die Kartoffeln weichkochen, pellen und durch die Kartoffelpresse drücken. Mit den restlichen Zutaten zu einem Teig vermengen.
2.    Aus dem Teig gleichgroße Quarkkeulchen formen und in heißem Butterschmalz beidseitig goldgelb ausbraten. Kurz vorm Servieren alle Quarkkeulchen mit etwas Puderzucker bestreuen.

Taken from here. Being in Japan means: no Quark, so I used Philadelphia cream cheese. I also added ascorbic acid (AKA Vitamin C) to make it a bit sour. No rainsins as I had none. No egg as cream cheese has enough fat. No lemon since I had none. And I had to use normal butter instead of clarified butter. No powdered sugar either.

So I had to change it a lot and I only used 3 potatoes and about 150g cream cheese. Turned out to be tasty though and it’s definitely similar to “Gebackenes Zeug”.

Will try again. Will make pictures then.

Nov 192016
 
Orange Pi Zero - Neat

Got myself a (actually two) Orange Pi Zero: US$7, quad core ARM Cortex [email protected], 256MB RAM, WLAN, FastEthernet, 1 USB, USB-to-go for power. All in a (about) 5×5 cm² package. Add in a 8GB microSD card, and it’s a small capable little board.

While the memory looks on the small side, itś plenty to run one program. Armbian uses about 40MB itself when running:

harald@opz1:~$ free 
              total        used        free      shared  buff/cache   available 
Mem:         247012       36720      142740        2168       67552      193175 
Swap:        131068           0      131068

leaving >200MB left. Given that I can have a (small, limited) web server runnig on an ESP8266 with about 40KB RAM, 256MB is plenty for a single-purpose server/controller.

Ethernet works (as expected). WLAN works via simple nmtui command.

Controlling the 2 LED’s is easy too:

root@opz1:/# cd /sys/class/leds/red_led 
root@opz1:/sys/class/leds/red_led# ls 
brightness  device  max_brightness  power  subsystem  trigger  uevent 
root@opz1:/sys/class/leds/red_led# echo 1 >brightness  

That turns on the red LED. Similar for the green LED.

To find out what GPIO’s exist, use this:

root@opz1:/sys/class/leds/red_led# cat /sys/kernel/debug/gpio                                              
GPIOs 0-383, platform/sunxi-pinctrl, sunxi-pinctrl: 
 gpio-10  (?                   ) out hi 
 gpio-17  (red_led             ) out hi 
 gpio-202 (xradio_irq          ) in  lo 
 gpio-354 (?                   ) out hi 
 gpio-362 (green_led           ) out hi

To export a GPIO, do

# echo 15 >/sys/class/gpio/export

and then in /sys/class/gpio/gpio15/ you can see the standard Linux kernel GPIO things like direction (in/out) and value (0/1)

See also the schematics which show what port of the H2+ connects to what thing: orange-pi-zero-schanetics-v1_11 (sp!)