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Hydroponic specialist GrowTek has designed an automation board constructed round an Espressif ESP32 microcontroller and providing eight 2A MOSFETs and 4 HX711 load-cell amplifiers — plus broad DC energy enter assist.
“It is particular as a result of I have never seen another boards that embrace all of those parts on one board,” GrowTek’s founder explains DJ Skone of his design. “I made this for automating hydroponics.”
These options begin with an ESP32 microcontroller that’s fed from a 9-16V DC energy enter — which features a secondary LDO output for the HX711 load-cell amplifier chips, providing a 5V excitation voltage for boosted decision on weight readings.
GrowTek’s ESP32-powered automation board contains 2A MOSFETs and 4 load-cell amplifiers. (📷: GrowTek)
Information from the 4 HX711s — pulled from load cells linked over RJ45 jacks, to simplify wiring — can then be used to set off a number of of the eight on-board MOSFETs, every rated at 2A, to drive motors, solenoids, or relays.
The board does not fairly come prepared to make use of out-of-the-box, although: “There isn’t a programmer on this board,” Skone explains. “The UART pins can be found on the board for programming together with your alternative of programmers. I take advantage of a CP2102 board for programming with Arduino IDE. These can be found on Amazon for $5-$10.”
Skone is promoting the board through the GrowTek Tindie retailer at $45 a unit absolutely assembled; patrons will want JST-XH5 connectors, not included, to utilize the MOSFETs and RJ45 connectors to utilize the HX711s.
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