However it immediately shuts off and not all of the LEDs actually turn on.Īny suggestions? Is it possible to power it this way? Will I need two power supplies? More Vs? I’m pretty new to a lot of this stuff so any suggestions are welcomed. You may be better off using a switching regulator instead they can be over 90 efficient but they are also more bulky. If you want to power another device that uses 5V and it just. If you want to power the trinket using a 5V power source, you'll put it in there since its the positive terminal. It is just the positive terminal of the power rail. The power pin is not set to be an input or an output. If you're running off a 5V battery back, over 30 of your power is going to heat in the LDO. You are thinking of the power pin in a digital manner. When the system runs the mechanical switch flicks on as does the LED strip. If you are feeding 3.7V into an LDO to get to 3.3V, then over 10 of your power (1 - 3.3/3.7) is getting wasted as heat in the LDO. The Trinket is small, but do not be fooled by its size Its a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of. This is the pin you'll want to use for any and all ground connections BUS is the USB Bus + Output pin. It is connected to the USB ground and the power regulator, etc.
![adafruit trinket 5v power draw adafruit trinket 5v power draw](https://cdn.shopify.com/s/files/1/0174/1800/products/2000-04_1024x1024.jpg)
GND is the common ground pin, used for logic and power. This input is reverse-polarity protected.
![adafruit trinket 5v power draw adafruit trinket 5v power draw](https://cdn-learn.adafruit.com/assets/assets/000/024/601/medium800/adafruit_products_2465_demo_02_ORIG.jpg)
ADAFRUIT TRINKET 5V POWER DRAW PRO
What I am currently trying to do is power the whole thing with a 5.5v power supply. have a 5V Pro Trinket, 5.5V or higher is suggested. However, I’m trying to streamline the whole thing by powering it from one power supply. The PowerBoost 1000C has at the heart a TPS61090 boost converter from TI. one for the trinket and one for the led strip. The 5.2V is safe for all 5V-powered electronics like Arduino, Raspberry Pi, or Beagle Bone while preventing icky brown-outs during high current draw because of USB cable resistance.
![adafruit trinket 5v power draw adafruit trinket 5v power draw](https://www.autobotic.com.my/image/autobotic/image/cache/data/all_product_images/product-3483/3260-5A-970x728.jpg)
Everything works fine when I am powering the trinket via the USB port but this requires 2 power supplies. If you have a 5V Pro Trinket, 5.5V or higher is suggested. I’m using a 5v trinket to run a PIR sensor and a light sensor which will then flip a mechanical switch to turn an led strip on and off. I am currently building a motion/light sensor project and I’m having a power issue.