#ADAFRUIT TRINKET PROJECTS SERIAL#
#ADAFRUIT TRINKET PROJECTS PRO#
#ADAFRUIT TRINKET PROJECTS CODE#

I bought a couple of the 3.3V ones as I thought theyвЂ™d be easier to run from battery packs вЂ“ but the first problem I found was that the PIR sensor needs 5V. Important to highlight I thinkвЂ¦ДЄnyway, you can find more info on it here. Please note, those are not my fingernails. A tiny, reduced version of the Arduino boards. So, rather than pick up an Arduino board like the Uno, which seemed like overkill for anything I was gonna make, I went for the Adafruit Trinket. Usually I sit in the room until one of them goes to sleep вЂ“ using that time to read tech stuffвЂ¦В so I had the idea to use a PIR motion sensor to detect if either of them get out of bed, and to sound an alarm (piezo buzzer), in the hope that this would discourage them getting out. Being boys, they like to fight, so keeping them in their beds to get them to sleep is a challenge. My first project was to be a sensor to detect when the kids get out of bed.

(You can read more about the difference between each here) In many projects they can be used interchangeably but their differences mean that one is usually a better fit than the other. The Pi is a microprocessor, whereas Arduino and itвЂ™s derivatives are actually micro-controllers. However, there are fundamental differences. The vast majority of Pi projects seemed to be ports from Arduino or similar so it seemed that I had started to learn things backwards.

#ADAFRUIT TRINKET PROJECTS PRO#

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.After playing with the Raspberry Pi for the last few months, I decided to take a look at Arduino to see what all the fuss was about. The Metro Mini is functionally identical to an Arduino Uno, also uses an ATmega328, and has a USB-to-Serial converter:ДЇrom 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.

#ADAFRUIT TRINKET PROJECTS CODE#

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.

#ADAFRUIT TRINKET PROJECTS SERIAL#

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.

Adafruit trinket projects