Difference between revisions of "DC Microgrid/consume01"

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(fuses)
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The GC90 power meter can deal with up to 100V DC at 20A. It also has a TTL port via USB connector.
The GC90 power meter can deal with up to 100V DC at 20A. It also has a TTL port via USB connector.


{|
| [[File:Microgrid-consume01-ttl01.jpg|thumb|300px|Connecting to the GC90 via an FTDI adapter]]
| [[File:Microgrid-consume01-ttl02.jpg|thumb|300px|Reading the GC90 status with python]]
|}
* [https://github.com/tiefpunkt/gc9x-reader/ Python script to read the GC90 via serial port]
=== LoRaWAN ===
We want to transmit voltage/current/power usage via LoRaWAN. The power meter can output that data via its TTL USB port.
{|
| [[File:Microgrid-consume01-lorawan01.jpg|thumb|300px|First test with a ProMini LoRaWAN node and a level shifter]]
| [[File:Microgrid-consume01-lorawan02.jpg|thumb|320px|Custom PCB]]
| [[File:Microgrid-consume01-lorawan03.jpg|thumb|180px|Custom PCB]]
|}
I've build a custom board to connect an Arduino to the GC90 and transmit the output via LoRaWAN.
* [https://github.com/tiefpunkt/powermeter-lorawan-connector GitHub Repository]
== Improvements ==
== Improvements ==
* Connect LoRaWAN Arduino to power meter and transmit voltage/current/power usage
* Add fuses
* Add fuses
** These resettable fuses can deal with up to 48V (depending on the rating, some only with lower voltages): [https://www.reichelt.de/rueckstellbarer-geraeteschutzschalter-5-0a-t9-611p-5a-p69579.html?&trstct=pol_0 Reichelt]
** These resettable fuses can deal with up to 48V (depending on the rating, some only with lower voltages): [https://www.reichelt.de/rueckstellbarer-geraeteschutzschalter-5-0a-t9-611p-5a-p69579.html?&trstct=pol_0 Reichelt]

Latest revision as of 22:49, 3 May 2021

     
DC consume01

Release status: beta [box doku]

Consume01-001.jpg
Description 12V power meter and distribution box
Author(s)  Severin
Last Version  0.1

A 12V power meter and distribution unit.

  • Input: 12V via speakon connector
  • Output: 12V via 3 car "lighter" sockets
  • Power metering: GC90 power meter

Power meter

The GC90 power meter can deal with up to 100V DC at 20A. It also has a TTL port via USB connector.

Connecting to the GC90 via an FTDI adapter
Reading the GC90 status with python

LoRaWAN

We want to transmit voltage/current/power usage via LoRaWAN. The power meter can output that data via its TTL USB port.

First test with a ProMini LoRaWAN node and a level shifter
Custom PCB
Custom PCB

I've build a custom board to connect an Arduino to the GC90 and transmit the output via LoRaWAN.

Improvements

  • Add fuses
    • These resettable fuses can deal with up to 48V (depending on the rating, some only with lower voltages): Reichelt
    • Bigger DC fuses are available here at solarbag (probably not for this part of the setup though)
  • Option for 48V -> 12V converter
  • additional connectors, like USB, USB-C, passive PoE...