Differences

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--- spark_counter [2015/10/25 18:50] – add pitcures kingkevin
+++ spark_counter [2015/12/05 12:54] – add git link kingkevin
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-The spark counter is a custom electricity meter.
+The spark counter is a custom electricity meter with wireless data logging capability.
 On one side I have:
@@ Line 15: / Line 15: @@
 ====== peacefair PZEM-004 ======
-The [[http://www.aliexpress.com/wholesale?catId=0&SearchText=peacefair|peacefair]] [[http://www.aliexpress.com/wholesale?catId=0&SearchText=peacefair+pzem-004|PZEM-004]] is a simple power meter.
+The [[http://www.aliexpress.com/wholesale?catId=0&SearchText=peacefair|peacefair]] [[http://www.aliexpress.com/wholesale?catId=0&SearchText=peacefair+pzem-004|PZEM-004]] is a simple power meter ({{:spark_counter:peacefair_pzem-004_porduct.pdf|datasheet}}).
 It:
   * measures voltages 80-260 V AC
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 USART to query the power meter, SPI to communicate with the nRF24L01+, and the nRF24L01+ protocol are implemented in C (using a lot of interrupts).
-The source code is available [[https://to.do|in this git]].
+The source code is available [[https://git.cuvoodoo.info/kingkevin/spark_counter/tree/master|in this git]].
 I prefer directly writing in the registers as described in the [[http://www.atmel.com/images/Atmel-8271-8-bit-AVR-Microcontroller-ATmega48A-48PA-88A-88PA-168A-168PA-328-328P_datasheet_Complete.pdf|datasheet]] rather than using an [[https://www.arduino.cc/en/Main/Software|abstract IDE]] and [[https://github.com/TMRh20/RF24|libraries]].
 This way I learn how it works in details.
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 On the [[#ATmega328P|micro-controller]] side I implemented the complete SPI-based protocol using the [[https://www.nordicsemi.com/eng/content/download/2726/34069/file/nRF24L01P_Product_Specification_1_0.pdf|datasheet]].
-The source code is available [[https://to.do|in this git]].
+The source code is available [[https://git.cuvoodoo.info/kingkevin/spark_counter/tree/master|in this git]].
 On the [[#Raspberry Pi|computer]] side I use the [[https://github.com/TMRh20/RF24|RF24 library]].
@@ Line 123: / Line 123: @@
 To receive the measurements I used a [[#nRF24L01+|nRF24L01+ transceiver]] with the [[https://github.com/TMRh20/RF24|RF24 library]].
-The source code is available [[https://to.do|in this git]].
+The source code is available [[https://git.cuvoodoo.info/kingkevin/spark_counter/tree/master|in this git]].
-The values are then simply stored in an [[https://influxdb.com/|InfluxDB]] time series database for visualisation in [[http://grafana.org/|grafana]].
 [[http://elinux.org/RPi_Low-level_peripherals#P1_Header|RPi]] - nRF24L01+ connection:
@@ Line 136: / Line 135: @@
 | GPIO9/MISO | P1_21 | 7 | MISO |
 | GPIO24 | P1_18 | 8 | IRQ |
+The values are then simply stored in an [[https://influxdb.com/|InfluxDB]] time series database for visualisation in [[http://grafana.org/|grafana]].
 {{:spark_counter:grafana.png?0x200|grafana visualization}}