I did upload the "blink" sketch, so that seems to work (at least the red LED blinked with a more solid on/off than what seems to appear when the Trinket is first turned on and in boot loader mode?)
Adafruit trinket pro 3v pro#
The power requirements of the display should easily fit within the Pro Trinket's 150mA budget? I also tried a 10k pull up resistor on the RX line, after reading the boot loader can get stuck in a boot loop if the RX line was noisy. However, I've tried it with/without lines, so this doesn't matter. One change different from my Uno wired circuit is that I'm showing pull-up resistors on the I2C lines. In the Pro Trinket tutorial I saw a comment that there was an updated bootloader, so I did apply the bootloader successfully, and re-loaded the display demo sketch. (I'm using Arduino IDE 1.6.9 and have changed my board setting to the Pro Trinket 3V/12MHz and selected the USBtinyISP programmer.) However, when I try the exact same sketch on a new 3V Pro Trinket the display does not respond. I have successfully run the Adafruit demo sketch (lines, triangles, text, dropping flowers) from an Arduino Uno.
![adafruit trinket pro 3v adafruit trinket pro 3v](https://cdn-reichelt.de/bilder/web/xxl_ws/A300/ADAFRUIT-2010-30091167-01.png)
Micro-USB jack for power and/or USB uploading, you can put it in a box or tape it up and use any USB cable for when you want to reprogram.Also has headers for an FTDI port for reprogramming.USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude and/or the Arduino IDE (with a few simple config modifications).The bootloader does not affect RAM usage. The bootloader on the Pro Trinket use 4KB of FLASH so the maximum sketch size is 28,672 bytes.
Adafruit trinket pro 3v code#
The USB connection is for uploading new code only.
Adafruit trinket pro 3v serial#
This is to keep the Pro Trinket small and inexpensive, you can use any FTDI cable to connect to the FTDI port for a Serial connection. There is no Serial-to-USB chip onboard.You cannot plug shields directly into the Pro Trinket.The onboard 3.3V regulator can provide 150mA output, not 800mA out.Pins #2 and #7 are not available (they are exclusively for USB).Here's some things you may have to consider when adapting Arduino sketches: Pro Trinket is programmable using the Arduino IDE as you already set up, and 95% of Arduino projects will work out of the box!įor tons more details, check out the Introducing Pro Trinket tutorial However, it uses 3V logic and 12MHz clock which means it's good when you want a lower-power and lower-voltage setup. The Pro Trinket 3V uses the Atmega328P chip, which is the same core chip in the Arduino UNO/Duemilanove/Mini/etc. So it's great once you've finished up a prototype on an official Arduino UNO and want to make the project smaller.
![adafruit trinket pro 3v adafruit trinket pro 3v](https://www.dhm-online.com/4840664-home_default/adafruit-stereo-28w-class-d-audio-amplifier-i2c-control-agc.jpg)
The Pro Trinket PCB measures only 38 mm x 18 mm x 2 mm (without headers) but packs much of the same capability as an Arduino UNO. We also added Optiboot support, so you can either program your Pro Trinket over USB or with a FTDI cable just like the Pro Mini and friends.
![adafruit trinket pro 3v adafruit trinket pro 3v](https://www.electan.com/images/Adafruit/2085-00.jpg)
Like the Trinket, it has onboard USB bootloading support - we opted for a MicroUSB jack this time. That's why we designed Pro Trinket, with 18 GPIO, 2 extra analog inputs, 28K of flash, and 2K of RAM. Trinket's a year old now, and while its been great to see tons of tiny projects, sometimes you just need more pins, more FLASH, and more RAM. It's like an Arduino Pro Mini with more pins and USB tossed in, so delicious. Trinket's got a big sister in town - the Pro Trinket 3V! Pro Trinket combines everything you love about Trinket with the familiarity of the common core Arduino chip, the ATmega328. Adafruit Pro Trinket, 3.3V, 12MHz, MicroUSB