SKU: 91098480829

2-CH Triac Dimmer HAT for Raspberry Pi, Integrated MCU, UART / I2C

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Description

2-CH Triac Dimmer HAT for Raspberry Pi, Integrated MCU, UART / I2CThis is a Bidirectional SCR Isolated HAT, Dual Channels Triac Output Control, ideal for lighting and industrial motor automation projects. This includes smart lighting, controlling motors for things such as ventilation, pump control, valve control, heating and air conditioning systems etc.. Basically anything that runs on mains A C power, either through a switch or variable voltage current control. This device has some advantages over a traditional

This is a Bidirectional SCR Isolated HAT, Dual Channels Triac Output Control, ideal for lighting and industrial motor automation projects. This includes smart lighting, controlling motors for things such as ventilation, pump control, valve control, heating and air conditioning systems etc.. Basically anything that runs on mains A/C power, either through a switch or variable voltage/current control.

This device has some advantages over a traditional relay since is offers higher efficiency, no mechanical wear, along with quicker response and adjustable outputs.

Key Features

  • STM32F0 MCU controller, requires minimal Raspberry Pi resource, UART / I2C communication
  • RC snubber circuit, protect the triac from power fluctuation
  • Up to 4400W output power, under ideal heat dissipation condition
  • Optocoupler isolation, preventing interference from the high voltage circuit
  • Indicator for easy checking the status of triac
  • Reserved UART and I2C interface, for working with other host control boards
  • Data rate: up to 921.6kbps for UART,up to 1024kbps for I2C
  • Comes with development resources and manual (examples in C and Python)

When connecting this to your Raspberry Pi, or Jetson Nano development board (this board uses the RPI standard 40pin GPIO header), you can easily interface high voltage devices such as hosehold lighting, or industrial pumps/motors to your automation project.

STM32F0 MCU Onboard

Integrates STM32F030 MCU, Supports Directly Command Control, Easy For Developping Quicker Response, Requires Minimal Resource From The Raspberry Pi

High Data Rate, Always One Step Ahead

Up To 921.6kbps For UART,Up To 1024kbps For I2C

Powerful Output Power

Up To 4400W Output Power, Under actively cooled environments (extra fan required to ensure proper heat dissipation)

Optocoupler Isolation Safety First!

Optoisolated Solution, Preventing Interference From The High Voltage Circuit

Warning: Please never touch the high voltage circuit on this board, and always make sure you install with sufficient insulation and isolation to avoid any contact with the board while it is under power.

Applications

What's On Board

  1. BTA24-600 high power bidirectional triac
  2. MOC3021S photocoupler, the triac driver
  3. LTV-824S AC photocoupler
  4. RC snubber circuit
  5. LM358DR OP amplifier
  6. STM32F030F4P6 main controller
  7. RT9193-33PB power chip
  8. Output indicator
  9. 20A blow fuse
  10. Standard Raspberry Pi 40PIN GPIO header
  11. MCU control interface, for use with other host control boards like Arduino
  12. AC input
  13. AC output
  14. Data bus selection
    A: use Raspberry Pi I2C bus
    B: use Raspberry Pi UART bus
  15. Mode selection
    A: I2C mode
    B: UART mode

Specifications

AC VOLTAGE 100 ~ 600V UART DATA RATE 1.2 ~ 921.6 kbps
AC CURRENT 0~20A I2C DATA RATE 1024 kbps
CONTROLLER STM32F030 LOGIC LEVEL VOLTAGE 3.3V/5V
COMMUNICATION BUS I2C/UART DIMENSIONS 65 × 56.5(mm)

Pinout Definition

Dimensions

Documentation

  • Wiki complete with C and Python examples

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 91098480829

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KaDi
Los Angeles, US
★★★★★ 4
Cute and comfortable!
Size: 6.5, Color: Chestnut
These are cute and surprisingly comfortable! My arches feel supported and the soles don’t feel as block-like as other platform style sandals! Things to note: The footbed liner is not made of suede and is a little slippery. It’s like a neoprene liner which was unexpected for an Ugg shoe. Also, I only intend to wear these sandals as slides (a la Birkenstocks) so the “adjustable” Velcro strap over the top part of the foot seems useless. It doesn’t snug the top down at all, functionally speaking it is only to wear around the back of the ankle. Maybe this matters to someone thinking they could tighten the top down a bit. The ankle strap is comfortable but could be a bit longer. Overall they are a cute option to the platform Birks that are very uncomfortable imo. Love the options to order half sizes. I’m usually a 6 in Ugg boots but ordered my regular shoe size 6.5 and they fit well. My heel would be at the very end of my sandal if I sized down. True to size. Keeping and will order in another color!
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Reviewed in the United States on May 28, 2025
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Jess
San Leandro, US
★★★★★ 5
Comfy
The most comfortable Sandals I own!
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Reviewed in the United States on April 7, 2026
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Avid Reader
Lowell, US
★★★★★ 5
More comfortable than flats!
Size: 8.5, Color: Bay Fog
I love these sandals! They run true to size, and they’re sooo comfortable. I was worried about getting fakes, but these were the real deal. The color is lovely (light purple). The foot bed can get dirty, but I find them to wash up nicely (by hand, not machine). I have purchased two more colors since! So much better than flats!
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Reviewed in the United States on November 9, 2025
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Siyu
Carnegie, US
★★★★★ 5
Comfy dual-mode sandals
Cute, quite comfy to walk in and love the support of the heel strap! It is not as comfy if using in slipper mode because the straps don’t keep your foot tight enough. I am usually a 8.5 but it runs slightly small so I switched up to a 9.
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Reviewed in the United States on June 25, 2025
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Anapaula
Draper, US
★★★★★ 5
Love them
Size: 5.5, Color: Red Pepper
I have gotten so many compliments on these shoes! They’re true to size and comfortable. Because of the material feet might sweat easier if hot but they dry quick. Quality is great and the color looks good, it’s more of a orange/red color. I got a 5.5 size
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Reviewed in the United States on May 21, 2026

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