Replies: 4 comments 1 reply
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From my point of view a very interesting idea. I don't use MQTT and I don't plan to use it either - "graphic gimmicks" would then be possible with the data on the SD card, for example. |
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Interesting Idea! About the board - I can only find similar boards: https://www.berrybase.de/micro-sd-card-reader-modul-mit-spi-schnittstelle https://www.makershop.de/plattformen/arduino-shields/xd05-data-logger/ Can you give us a buying source example? Another option: use a ESP32 CAM module - it has a sd card slot too. I can test if the NRF24 module works on the HSPI connectors on GPIO12-15 on such a esp module. |
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The one I posted is chinaware, e.g. via e-bay ("mini data logger"). If you want to go for a trusted German source that also has good documentation, you may want to go for; https://www.reichelt.de/de/de/entwicklerboards-adalogger-featherwing-rtc-sd-slot-pcf8523-debo-feather-rtc-p235464.html?PROVID=2788&gclid=EAIaIQobChMImISlyPbI-gIVlYXVCh2HnQm9EAQYBCABEgIVNPD_BwE&&r=1. There are a lot of options out there. |
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"dokuhn" is working on new verion of his breakout board. this one includes a MicroSD port: |
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FWIW: Ahoy implemented sd card storage last year: |
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Hi, how about considering offline logging to a SD-Card as an option parallel to the MQTT (with same settings, e.g. appending all x seconds a new line to a csv)? There is cheap hardware available, which also includes a real time clock DS1307 so that the synced ntp time could be stored as well on the device (see attached picture).
Vielen Dank nochmals für das großartige Projekt!
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