ESP32 HiGrow V1.0 (Plant Spike)

10 thoughts on “ESP32 HiGrow V1.0 (Pflanzenspieß)”

1. Hello Stefan,
   I've now also had my first experiences with the stick from Ali, and it's sufficient for experimenting.
   I have the code from draeger-it.blog and am sending it to the „ThingSpeak“ page. .
   Unfortunately, I'm not getting reasonable times with an 18650 battery either. With a stated 8800 mAh, it's kaput after about 200 cycles. When I measure the current the stick draws in standby mode, I have about 20 mA on the multimeter. In transmission status, the current is 170 mA.

   Greetings from Halle/Sa

   Siegfried

   Reply

2. Hello,

   after some error messages (wrong board, I had selected an ESP32 Wrover module instead of an ESP32 DEV Module as above)
   No error messages are now appearing in the COM log.
   But no further data is displayed there for me either.

   It doesn't get any better than this.
   11:00:57.393 -> …..ets Jun 8 2016 00:22:57
   11:01:02.603 ->
   11:01:02.603 -> rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
   11:01:02.603 -> configsip: 0, SPIWP:0xee
   11:01:02.603 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
   11:01:02.603 -> mode:DIO, clock div:1
   11:01:02.603 -> load:0x3fff0018,len:4
   11:01:02.603 -> load:0x3fff001c,len:1216
   11:01:02.603 -> ho 0 tail 12 room 4
   11:01:02.603 -> load:0x40078000,len:10944
   11:01:02.603 -> load:0x40080400,len:6388
   11:01:02.603 -> entry 0x400806b4
   11:01:02.882 -> [WIFI] Connecting to No_Name
   11:01:03.068 -> xx:xx:xx:xx:xx:18
   11:01:04.094 -> ………….
   (MAC removed)

   Shouldn't values be displayed there as well?
   My Fritzbox can't find the IP address I entered either. (SSID and WPA2 password are correct though)
   I wanted to use it with iOBroker (I already have MQTT installed there, but there is no connection).

   Reply

   1. Hello Corcon,

      It looks like the Wi-Fi connection isn't working.
      Let's check in the Fritzbox to see if 2.4GHz is enabled. If necessary, try disabling 5GHz. The encryption is WPA2. Try choosing a short password and test with that.

      Perhaps try using some code that just establishes the Wi-Fi connection and see if that works. You can find an example here:
      https://www.fambach.net/esp32-nodemcu/ or one of the example programs for the ESP32.

      Hope that helps, regards Stefan

      Reply

3. Hello,

   After some „hurdles“, I managed to compile the code and flash it onto the plant skewer.
   I have adjusted the WLAN SSID and password.
   But shouldn't I see the Wi-Fi connection on the Fritzbox now?
   As for MQTT, I wanted to use iobroker, but I'm not getting a connection there either.
   How can I test if the spit is working at all?

   Reply

4. Hello Stefan,

   Everything runs on a RaspPi and the DietPi operating system for me. https://dietpi.com, It has a lot of built-in software for installation, including Docker: https://dietpi.com/docs/software.

   If you want, I'll gladly send you my Node-RED, InfluxDB, Grafana „workflow“.

   Sorry, yes I mean to keep it awake for longer, about 60 seconds, as I'd like it to wake up twice a day (uint64_t DEEPSLEEP_SECONDS = 3600*12;) and have enough time for watering and measurement. I can't find the setting to adjust the „awake“ time.

   I've inverted the light level map because the graph in Grafana is showing a low value when it's sunny.

   Greetings
   Ian

   Reply

   1. Hello Ian,

      is always before line 75 in the loop function. Before the deep sleep start is where you would need to get involved. The deep sleep start is unfortunately after the console output and therefore easily overlooked.

      Hello
      Stefan

      Reply

      1. Hello Stefan,

         Thanks, found it.

         Greetings
         Ian

         Reply

      2. Hello Stefan,

         Sorry, one more question. How can I set it to read the sensor data multiple times during the „wake“ phase?

         Because in my irrigation system I would like to irrigate as follows in a 1-minute irrigation time:

         Wait up
         Sensor reading: dry > water > wait
         Sensor reading: dry > water > wait
         Sensor reading: dry > water > wait
         Sensor reading: wet > no water > waiting
         Sensor reading: wet > no water > waiting
         etc.
         Deep sleep

         Greetings
         Ian

         Reply

5. Hello Ian,

   Glad it's working out for you. With InfluxDB and Grafana, you're already much further along than I am. I've only just made my first attempts with Docker.

   I don't know the module, but it's very interesting. Basically, it only needs two resistors connected as a voltage divider to an analogue port. It also annoys me a bit that the voltage or battery level aren't measured at the same time. On a few circuit diagrams there's a measurement connection for the charging IC, perhaps it just needs a bridge, but I'm not very good with electronics.

   I'm not sure what you mean by the 60 seconds, of course you can keep the module awake for longer, for example, to switch a pin, is that what you mean?

   The easiest way would be to put it before line 75, before the output and the sleep command (by the way, terrible programming style 😉).

   Hello
   Stefan

   Reply

6. Hello Stefan,
   Thank you very much for this great project. I have a HiGrow and couldn't do anything with it, now it's running great with node-red, influxDB and Grafana.

   A question, would it be possible to integrate a GY219 Current Power Supply Sensor via I2C with MQTT. I am interested in monitoring the battery voltage.

   Another question, would it be possible to determine the time after deep sleep? I would like to integrate it with my irrigation system and it needs about 60 seconds to be switched on.

   Many greetings
   Ian

   Reply