HF61 – 5W USB Powered Amplified Speaker with Equalizer


Hui Gardens HF61 5W USB powered amplified speaker is the bigger badder version of the Hui Gardens HF6 with an added internal 4x AA battery pack and a 3 band equalizer. Sound output from this 5W speaker is enough to rattle the desk a bit. Protected by a Pelican 1030, the HF61 is still small enough to fit in the side pockets of most backpacks and the internal batteries makes it truly portable. There is still an option for external power if you have a USB port nearby. Ran out of power or don’t want lithium ion batteries exploding in your face? No problem, they’re just regular AA batteries, just swap in some new ones! If you’re finding that you can’t get enough juice out of your USB port to get the volume and bass desired without distortion or clipping, plug in a 9V or 12V wall adapter and crank it UP!

The 3 band equalizer allows for adjustment of treble, mid-range and bass via physical knobs. This dumb speaker has no extra “smart” bits, just plain and simple things to make good sound. At least better than what a laptop can muster. Crank it up a bit and watch this thing pound! Being a dumb speaker, it is impossible for the HF61 to spy on you. You can yell “HEY DUMBASS!” at it all you want and nothing is going to happen.

HF31 – Thermo Hygrometer Barometer with Solar Charger


Hui Gardens HF31 thermo hygrometer barometer is a rugged solar powered environment monitoring device. The HF31 makes use of the Bosch BME280 sensor for its thermometer, hygrometer and barometer functions to measure air temperature, humidity and station pressure. Dew point is calculated from air temperature and humidity and displayed on a hi-res OLED display.

Protected by a transparent Nanuk 310 case, the Hui Gardens HF31 can withstand the elements while housing a solar panel that charges two internal user replaceable NiMH AA batteries. The brains of the HF31 is an Arduino compatible Adafruit Pro Trinket (3V) for low power consumption. HF31 is field programmable via the FTDI cutout in the panel and can be adjusted and calibration date set if you know what you’re doing. The Hui Gardens HF31 is a portable weather station that can be strapped to the outside of a backpack or left in the snow.

HF11 – 2 Wire RTD Simulator for PT1000


Hui Gardens HF11 2 wire RTD simulator for PT1000 was made to be used as a calibration standard for the Hui Gardens HF3 WiFi RTD Meat Smoker Temperature Transmitter. Coarse (10kΩ) and fine (1kΩ) adjustment via 10 turn potentiometers allow precise setting of resistance value. Since there are no graduated steppings like a traditional decade box, it does not require calibration and is as accurate as the multimeter being used to characterize it.

The banana plug connectors are spaced such that the fancy two conductor leads can be used. Connect the two sets of banana plug connectors to use them together or disconnect to use separately.