In the DeviceHQ app store the DotBox-Google app writes to the SD card.
Also, here’s an AEP Node Red Flow that writes “LoRa” input node data to the
SD card and names the file evbCsv.
[{“id”:”ef69a915.275758″,”type”:”file”,”name”:””,”filename”:””,”appendNewline”:true,”createDir”:false,”overwriteFile”:”false”,”x”:425.95239639282227,”y”:399.3452892303467,”z”:”815521a7.8cc2f”,”wires”:[]},{“id”:”c5bec579.958128″,”type”:”lora in”,”name”:””,”datatype”:”utf8″,”x”:241.96429061889648,”y”:284.2857275009155,”z”:”815521a7.8cc2f”,”wires”:[[“4e819f94.3a995”]]},{“id”:”4e819f94.3a995″,”type”:”function”,”name”:””,”func”:”var pCsvPath = context.global.csvPath || \”/media/card/evbCsv\”;\nmsg.filename = pCsvPath;\nreturn msg;\n\n”,”outputs”:1,”noerr”:0,”x”:405,”y”:297.5,”z”:”815521a7.8cc2f”,”wires”:[[“ef69a915.275758″,”4d5b87e5.eea018”]]},{“id”:”4d5b87e5.eea018″,”type”:”debug”,”name”:””,”active”:true,”console”:”false”,”complete”:”false”,”x”:403.57143783569336,”y”:210.35714149475098,”z”:”815521a7.8cc2f”,”wires”:[]}]