Dual-signal wires version, signal break-point continuous transmission.Data transmitting at speeds of up to 800Kbps.Serial cascade interface, data receiving and decoding depend on just one signal line.256 gray level and 16777216 full-color display.
The WS2813s are each addressable as the driver chip is located inside the LED.Įach LED has a constrant current drive so the color will be very consistent even if the change of the voltage. The RGB LED Ring are 3535-sized LEDs with an embedded microcontroller inside the LED. The Grove - RGB LED Ring (20 - WS2813 Mini) is a mini version of WS2813 Digital RGB LED Ring. The Pro Trinket and Metro Mini can work with a BLE module, and provide enough IO pins that you won't have to worry about running out.Edit Grove - RGB LED Ring (20 - WS2813 Mini) The Metro Mini is functionally identical to an Arduino Uno, also uses an ATmega328, and has a USB-to-Serial converter:įrom there, our line of microcontroller boards shifts over to the Feather line, which include several different kinds of microcontroller, all of which have the same general set of pin connections at the edge of the board. That chip costs as much as the ATmega328, so leaving it off the Pro Trinket allows the board to be that much smaller and less expensive. The main difference between a Pro Trinket and an Uno is that the Uno also has a USB-to-Serial converter that handles communication with a computer. almost any code that will run on an Uno will work as-is on a Pro Trinket, with some minor exceptions due to differences in the pins broken out to the edges. The Pro Trinket gives you a lot more programming power and IO options than the Trinket.
It has 2k of RAM, 23 IO pins (18 of which are broken out to the edge of a Pro Trinket), and separate peripherals for I2C, SPI, and Serial. The Pro Trinket uses an ATmega328 microcontroller, which is the same as the one in an Arduino Uno. The Gemma also uses an ATtiny85, but only has 3 of the IO pins broken out to the side of the board. The ATtiny family of microcontrollers have limited memory (512 bytes of RAM for the ATtiny85) and one generic serial peripheral that can be programmed to use the I2C, SPI, or Serial protocols.
The Trinket uses an ATtiny85 microcontroller with 6 IO pins, two of which are tied to the USB jack so the board can upload firmware. Despite the similarity of their names, there's a significant difference in hardware between the Trinket and the Pro Trinket.
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