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LoRa PCB sender checkout

LoRa PCB sender checkout

Oct 26, 2022

PCB arrived today.

Initial Setup

  1. Soldered JP1,2,3 (debug LED, power , and charge indicator)

  2. Set to ESP32 DevKit

  3. Blink is working and printing to serial console on programmer UART

Initial TODO

Hello World!
Evaluate charger circuit
Add compiler directive for non-Heltec software build
ADC review for VBAT
ADC review for VSOLAR
Digital CHGST pin read
Rain gauge interrupt routine back online
I2C evaluation with BME280
Weather direction evaluation
Wind speed evaluation
New LoRa radio install for 915MHz
Calibrate ADC for VBAT
Calibrate ADC for VSOLAR
Verify I2C power switch
Verify LoRa power switch

Evaluation Notes

Charger Circuit

LED is on when charging

Mounting alternate pinout LoRa radio

Oct 26, 2022

I’ll be using Caption tape to insulate the pads from the module electrical points. The good news is that the GND pads and antenna match, so those will be soldered directly.

Oct 27, 2022

I2C operating with BME280

Had to add intentional delay for wind speed data collection as there is no WiFi connect negotiations to rely on.

Getting my LoRa radio to connect to the PCB will be a total hack job. Bringing it to work tomorrow to use the precision soldering iron.

Oct 28, 2022

Prepped LoRa radio for modifications. I’m using high temperature Kapton tape to insulate pads that I’m intending on soldering jumper wires to.

 

 

Oct 29, 2022

Not as elegant as planned, but LoRa radio is verified. A total freaking hack job!

Sensor → LoRa → MQTT → Home Assistant

Data makes it to Home Assistant
Rainfall hourly accumulation
Rainfall 24h accumulation
Wire up DS 1-wire sensor
Correct BME temperature in MQTT or HA (unit of measure is wrong)

Home Assistant - Weather sensor data

Home Assistant - Hardware sensor/health data

Nov 5, 2022

Mostly morning towards formal beta testing release on sender and receiver software at this point in time.

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