Design with Adafruit Trinket 3V in Cirkit DesignerThe Adafruit Trinket 3V is a compact and versatile microcontroller board that harnesses the capabilities of the ATtiny85 microcontroller. Designed for hobbyists and professionals alike, the Trinket 3V offers a cost-effective platform for projects where space is at a premium and power consumption is a concern. Its small size makes it ideal for wearables, portable projects, and Internet of Things (IoT) devices.
This circuit is a sensor-based system that uses an Adafruit Trinket M0 microcontroller to read data from a MiCS-5524 gas sensor and control a Tower Pro SG90 servo motor. Additionally, it includes an Adafruit Audio FX Mini Sound Board connected to a STEMMA speaker for audio output, all powered by a 4xAA battery pack.
Open Project in Cirkit Designer
This circuit is a portable, battery-powered system featuring an Adafruit QT Py RP2040 microcontroller that interfaces with an OLED display, a proximity sensor, an accelerometer, and an RGB LED strip. The system is powered by a lithium-ion battery with a step-up boost converter to provide 5V for the LED strip, and it includes a toggle switch for power control. The microcontroller communicates with the sensors and display via I2C.
Open Project in Cirkit Designer
This circuit features a NodeMCU V3 ESP8266 microcontroller interfaced with an LCD TFT screen, an nRF24L01 wireless transceiver, and an Adafruit Analog 2-Axis Joystick. The NodeMCU collects joystick inputs and displays information on the TFT screen, while also communicating with other devices via the nRF24L01 module. The circuit is powered by a 9V battery, with the NodeMCU regulating the voltage for other components.
Open Project in Cirkit Designer
This circuit features an Adafruit QT Py RP2040 microcontroller interfaced with an APDS9960 proximity sensor, an MPU6050 accelerometer and gyroscope, and an OLED display via I2C communication. It also includes a buzzer controlled by the microcontroller and is powered by a 3.7V LiPo battery with a toggle switch for power control.
Open Project in Cirkit Designer| Pin # | Name | Description |
|---|---|---|
| 1 | BAT+ | Battery input for an external power supply (3.5V to 16V) |
| 2 | GND | Ground pin |
| 3 | 5V | Regulated output used to power external components |
| 4 | #0 | GPIO pin, also used for USB data- if USB is enabled |
| 5 | #1 | GPIO pin, also used for USB data+ if USB is enabled |
| 6 | #2 | GPIO pin, can also function as an analog input (A1) |
| 7 | #3 | GPIO pin, can also function as an analog input (A3) and PWM output |
| 8 | #4 | GPIO pin, can also function as an analog input (A2) and PWM output |
| 9 | RESET | Reset pin (active low) |
// Blink an LED connected to pin #2 on the Adafruit Trinket 3V
#define LED_PIN 2
void setup() {
// Set the LED pin as an output
pinMode(LED_PIN, OUTPUT);
}
void loop() {
// Turn the LED on
digitalWrite(LED_PIN, HIGH);
delay(1000); // Wait for 1 second
// Turn the LED off
digitalWrite(LED_PIN, LOW);
delay(1000); // Wait for 1 second
}
Note: This code is for demonstration purposes and assumes that an LED with an appropriate current-limiting resistor is connected to pin #2 of the Trinket 3V.
For further assistance, refer to the Adafruit Trinket 3V forums and the extensive online resources available for troubleshooting and project ideas.