iSpindel WiFi relay is a device used for signal amplification and connection of a digital hydrometer – iSpindel, processing of received data and further distribution according to fermentation monitoring applications. The data measured by the hydrometer is displayed on a large TFT display, can be viewed via the local relay website or sent to the other suported applications where graphs, analytics, remote insight into the state of the fermenter and more are available. Now is possible to send hydrometer data to the following services: UbiDots, BrewSpy, Brewfather, Monitor.Beer, Grainfather, Little Bock, Brewers Friend, BrewBench, Blynk IOT, MQTT. The last time the hydrometer data was read, as well as the density, temperature, battery voltage, signal strength, name of the hydrometer, are shown on the device screen and website.  The signal strength of the iSpindel WiFi relay was tested by placing the hydrometer in a 2 mm thick steel barrel and a 6 mm lid without a rubber seal with a stainless steel clamp system, and placed the barrel in a closed freezer. And in such conditions, the signal easily broke through to the hydrometer.

Due to its extremely reliable connectivity, iSpindel consumes noticeably less power and thus lasts longer. iSpindel WiFi relay plus is powered by a 5V USB-C cell phone charger that can also be used to charge your hydrometer battery, and your power consumption is negligible. The iSpindel hydrometer no longer needs the Internet, and  WiFi relay it doesn’t need either. Now the internet connection is only needed when you need a remote insight into the fermentation state via the previously mentioned applications. The gadget can greatly facilitate and speed up the calibration of the iSpindel hydrometer, as it displays an angle.

The relay firmware is constantly being upgraded and improved. Firmware upgrades, if necessary, they upgrade wirelessly via OTA (Over the Air) and the device’s web interface.

Currently 2 iSpindel hydrometers can be connected to the iSpindel WiFi relay. Any irregularities or warnings on the display are shown in red colour. A confirmation tone sounds when saving the settings and a continuous alarm occurs at too low or too high hydrometer temperature and when the specific gravity falls below the value you specify.

iSpindel relay+ has posibility of entering OG for 2 hydrometers from which % ABV and attenuation are then automatically recalculated. The latest firmware has SG and temperature correction for both iSpindels applied to the Display and Blynk Application.

The battery status of the iSpindel is displayed as a graphic icon showing the battery voltage and as a percentage of the remaining voltage. Next to the battery status icon is a graphic display of the signal strength according to the hydrometer, and next to it is a graphic display of the signal strength according to the home WiFi network. If the Relay is not connected to home WiFi then the “D” (Disconnected) mark is visible instead of the signal strength display.

If you use Plato degrees instead of SG, then you can change the density unit for each iSpindel in the settings.

If you accidentally calibrated the iSpindel in the Plato unit, you can convert P to SG in the management settings of relay local web site. This only applies to iRelay, while the application receives the original iSpindle data.

The device only works on 2.4ghz WiFi network.

Additional thermometer

The outdoor or ambient thermometer has the ability to alarm you when temperature too high or too low is. The length of the sensor can be extended without affecting the measurement. Also, this thermometer can be placed on the fermenter shell and serve as protection against fermentation temperature controller failure (STC – 1000). In the thermometer settings, you can select the unit in degrees C or degrees F.

If the relay has a built-in temperature probe then you can add a BrewSpy new device, Brewfather Custom Stream device or Grainfather custom controller to display temperature on the BrewSpy, Brewfather or Grainfather app. Temperature appears in the interval of 1,5 or 15 minutes and is sent independently of the interval of the iSpindle.

Warning: If you have a black screen when turning on the device, the most common causes are: When you use a USB-c power supply, there is a chance that you do not have a "smart" charger and that the iRelay will not work even though it is declared at 5V. Try changing the cable to be USB-A to USB C, try powering through a computer or laptop, and if it works there, look for another power supply.