LoraWanDustSensor - Revision history

Bertrik Sikken: /* Bluetooth interface */

2023-04-08T19:25:12Z

Bluetooth interface

← Older revision		Revision as of 19:25, 8 April 2023
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	There are now official Bluetooth UUIDs for GATT characteristic and object types for PM10, PM2.5 and PM1.0, see		There are now official Bluetooth UUIDs for GATT characteristic and object types for PM10, PM2.5 and PM1.0, see
	https://btprodspecificationrefs.blob.core.windows.net/assigned-numbers/Assigned%20Number%20Types/Assigned_Numbers.pdf		https://btprodspecificationrefs.blob.core.windows.net/assigned-numbers/Assigned%20Number%20Types/Assigned_Numbers.pdf

			Assigned numbers:
			* 0x2BD5: PM1.0
			* 0x2BD6: PM2.5
			* 0x2BD7: PM10
			* ...

	=== Links ===		=== Links ===

2023-04-08T19:21:15Z

Bluetooth interface

← Older revision		Revision as of 19:21, 8 April 2023
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	==== Bluetooth interface ====		==== Bluetooth interface ====
	There are now official Bluetooth UUIDs for GATT characteristic and object types for PM10, PM2.5 and PM1.0, see ~~page 19 of~~		There are now official Bluetooth UUIDs for GATT characteristic and object types for PM10, PM2.5 and PM1.0, see
	https://btprodspecificationrefs.blob.core.windows.net/assigned-~~values~~/~~16-bit~~%~~20UUID~~%~~20Numbers%20Document~~.pdf		https://btprodspecificationrefs.blob.core.windows.net/assigned-numbers/Assigned%20Number%20Types/Assigned_Numbers.pdf

	=== Links ===		=== Links ===

2023-04-08T12:13:32Z

What is it?

← Older revision		Revision as of 12:13, 8 April 2023
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	== What is it? ==		== What is it? ==
	This is a companion project of [[~~LoraLuftdatenForwarder~~]].		This is a companion project of [[Sensor-data-bridge]].

	The concept consists of:		The concept consists of:

2022-01-01T15:13:15Z

Hardware

← Older revision		Revision as of 15:13, 1 January 2022
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	The node is based on Arduino-compatible ESP32 boards with LoRaWAN:		The node is based on Arduino-compatible ESP32 boards with LoRaWAN:
	* For the processor board, either the		* For the processor board, either the
	** TTGO ~~ESP32 board~~ ("ttgo-lora32-v1") or the		** TTGO LoRa32 V1 ("ttgo-lora32-v1") or the
	** Heltec LoRa32 V2 can be used.		** Heltec LoRa32 V2 can be used.
	* The particulate matter sensor is the SDS011 or the SPS30, the sensor type is auto-detected.		* The particulate matter sensor is the SDS011 or the SPS30, the sensor type is auto-detected.
	* The humidity/temperature sensor is the BME280 (superior to the DHT11/22).		* The humidity/temperature sensor is the BME280 (superior to the DHT11/22), auto-detected.
			* An external SSD1306 display (I2C) can be connected, for easier mounting into the casing and avoiding burn-in the built-in OLED, auto-detected.

	=== Pinout ===		=== Pinout ===

2021-12-22T17:35:03Z

Pinout

← Older revision		Revision as of 17:35, 22 December 2021
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	* https://randomnerdtutorials.com/esp32-pinout-reference-gpios/		* https://randomnerdtutorials.com/esp32-pinout-reference-gpios/
	* NOTE: https://www.thethingsnetwork.org/community/berlin/post/warning-attention-users-of-ttgo21-v16-boards-labeled-t3_v16-on-pcb-battery-exploded-and-got-on-fire		* NOTE: https://www.thethingsnetwork.org/community/berlin/post/warning-attention-users-of-ttgo21-v16-boards-labeled-t3_v16-on-pcb-battery-exploded-and-got-on-fire

			Note: pins 34, 35, 36, 39 are INPUT ONLY!

	=== Display ===		=== Display ===

2021-12-20T18:47:23Z

Bluetooth interface

← Older revision		Revision as of 18:47, 20 December 2021
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	* https://lora-alliance.org/wp-content/uploads/2020/11/TR005_LoRaWAN_Device_Identification_QR_Codes.pdf		* https://lora-alliance.org/wp-content/uploads/2020/11/TR005_LoRaWAN_Device_Identification_QR_Codes.pdf

	=== Bluetooth interface ===		==== Bluetooth interface ====
	There are now official Bluetooth UUIDs for GATT characteristic and object types for PM10, PM2.5 and PM1.0, see page 19 of		There are now official Bluetooth UUIDs for GATT characteristic and object types for PM10, PM2.5 and PM1.0, see page 19 of
	https://btprodspecificationrefs.blob.core.windows.net/assigned-values/16-bit%20UUID%20Numbers%20Document.pdf		https://btprodspecificationrefs.blob.core.windows.net/assigned-values/16-bit%20UUID%20Numbers%20Document.pdf

2021-12-20T18:46:57Z

Next steps

← Older revision		Revision as of 18:46, 20 December 2021
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	* Collection of encodings for various data in QR codes: https://github.com/zxing/zxing/wiki/Barcode-Contents		* Collection of encodings for various data in QR codes: https://github.com/zxing/zxing/wiki/Barcode-Contents
	* https://lora-alliance.org/wp-content/uploads/2020/11/TR005_LoRaWAN_Device_Identification_QR_Codes.pdf		* https://lora-alliance.org/wp-content/uploads/2020/11/TR005_LoRaWAN_Device_Identification_QR_Codes.pdf

			=== Bluetooth interface ===
			There are now official Bluetooth UUIDs for GATT characteristic and object types for PM10, PM2.5 and PM1.0, see page 19 of
			https://btprodspecificationrefs.blob.core.windows.net/assigned-values/16-bit%20UUID%20Numbers%20Document.pdf

	=== Links ===		=== Links ===

2021-12-19T19:48:49Z

Firmware update

← Older revision		Revision as of 19:48, 19 December 2021
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	* Connect to the access point set up by the node, it's called 'ESP-XXXXXXXXXXXX', where XX is the same as the LoRaWAN device EUI		* Connect to the access point set up by the node, it's called 'ESP-XXXXXXXXXXXX', where XX is the same as the LoRaWAN device EUI
	* Using a browser, go to http://192.168.4.1 , a firmware selection screen appears as shown on the right		* Using a browser, go to http://192.168.4.1 , a firmware selection screen appears as shown on the right
	* Select the appropriate BIN file, the will be updated and ~~reboot~~		* Select the appropriate BIN file, the firmware will be updated and the board reboots

	=== Payload encoding ===		=== Payload encoding ===

2021-12-19T19:48:14Z

Display

← Older revision		Revision as of 19:48, 19 December 2021
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	=== Display ===		=== Display ===
	The display on the ESP32 LoRa boards is an 128x64 pixel OLED display.		The display on the ESP32 LoRa boards is an 128x64 pixel OLED display.
	It wears out after some months, pixels that have been ~~one~~ more than other pixels will become dimmer.		It wears out after some months, pixels that have been on more than other pixels will become dimmer.

	[https://hackaday.com/2019/04/23/a-year-long-experiment-in-oled-burn-in/ Hackaday article about this effect].		[https://hackaday.com/2019/04/23/a-year-long-experiment-in-oled-burn-in/ Hackaday article about this effect].

2021-12-19T13:40:45Z

Next steps

← Older revision		Revision as of 13:40, 19 December 2021
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	=== Next steps ===		=== Next steps ===
			* Automate building and uploading of BIN files on github with github actions/workflows
	* Restructure firmware a bit to make the main .ino file smaller		* Restructure firmware a bit to make the main .ino file smaller
	* Show comprehensive information on startup screen, consider making this one of the main 'views' (device info, measurements, QR code)
	** board type (TTGO v1 or Heltec v2), relevant to firmware update
	** type of PM sensor: SDS011 or SPS30
	** type of RH sensor: BME280 or absent
	* Implement a simple command set through LoRaWAN downlink commands, for example:		* Implement a simple command set through LoRaWAN downlink commands, for example:
	** create a basic command structure: command port, payload encoding, e.g. 1st byte is command id		** create a basic command structure: command port, payload encoding, e.g. 1st byte is command id