Differences

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--- spark_counter [2016/10/01 09:59] – [peacefair PZEM-004] address kingkevin
+++ spark_counter [2016/10/04 21:23] – [Orange Pi] moved to spark abacus kingkevin
@@ Line 37: / Line 37: @@
 {{:spark_counter:dsc02328.jpg?0x200|PZEM-004 opto-couplers}}
-The meter also provides a UART port to query the measured values.
+The meter also provides a UART port (using an XH-4P connector) to query the measured values.
 Two opto-couplers isolate the main power meter circuits from the TX and RX UART ports.
@@ Line 157: / Line 157: @@
 {{:spark_counter:grafana.png?0x200|grafana visualization}}
-====== Orange Pi ======
-The [[http://www.orangepi.org/orangepipc/|Orange Pi PC]] is a cheap [[http://www.aliexpress.com/item/Orange-Pi-PC-ubuntu-linux-and-android-mini-PC-Beyond-and-Compatible-with-Raspberry-Pi-2/32448079125.html|$15 alternative]] to the Raspberry Pi 2.
-This single board computer is based on an [[https://linux-sunxi.org/H3|Allwinner H3 (sun8iw7p1)]] SoC with ARM Cortex-A7 @ 1.2GHz (often over-clocked), and 1 GB of RAM.
-For this price the hardware is unbeatable, but the software support is really poor.
-Also only Android supports the video hardware acceleration currently.
-The official [[http://www.orangepi.org/downloadresources/|images]] are quite old (e.g. Android 4.2.2), but there are a bit newer images made available by the community:
-  * [[http://www.orangepi.org/orangepibbsen/forum.php?mod=viewthread&tid=755|Android]] (often ROMs from other Allwinner based products), with a weird [[http://www.orangepi.org/Docs/SDcardinstallation.html#Install_Android_OS_image|installation process]]
-  * various [[http://www.orangepi.org/orangepibbsen/forum.php?mod=viewthread&tid=342|linux]] distributions
-Since I'll only use it as server I decided to go with debian jessie minimal.
-The pin header is the same as the [[http://www.raspberry-projects.com/pi/pi-hardware/raspberry-pi-2-model-b/rpi2-model-b-io-pins|40-pin Raspberry Pi]].
-The SPI port to connect the nRF24L01 is also available over ''/dev/spi''.
-But else this board is not really worth spending time on.
-Also don't forget to put a heat sink on the CPU, else they will be slowed down quite often because of the high temperatures.