Beetle is fully compatible with the Arduino Leonardo board. It derives its core notion
from minimalism without compromising functionality.
It comes with Atmel ATmega32U4 (datasheet) @16MHz clock time and has expanded amounts of interfaces: 10 digital pins, 5 analog pins, and 4 pwn pins. To further make it user-friendly, it is compatible with Micro USB so that direct programming and testing is no longer a headache. Select "Arduino Leonardo (tools - board - Arduino Leonardo in Arduino IDE), the ATmega32U4 comes pre burned with a bootloader that allows you to upload any new code that is applicable to Arduino Leonardo.
As the DFRobot smallest board compatible with Arduino Leonardo, it enjoys similar powerful functionalities. Beetle aims to solve problems of the low-cost controller, ease-of-using properly, and to provide a low-cost solution for disposable projects, such as DIY projects, workshops, gift projects, E-Textiles, and educational. For students and makers who can not afford too much on hardware purchasing, Beetle can be a great solution for them.
- 20mm X 22mm compact size
- Direct downloading and testing via Micro USB
- V-shaped large-size gold-plated IO ports make it convenient for the user to twist wires upon, and can also be directly sewn on clothes with conductive thread.
- Two honeycomb shape gold-plated power interface
- Magic light blue soft BLINK indicator
- Microcontroller: ATmega32u4
- Clock Speed: 16 MHz
- Operating Voltage: 5V DC
- Digital I/O Pins: 10
- PWM Channels: 4
- Analog Input Channels: 5
- UART: 1
- I2C: 1
- Micro USB: 1
- Power Ports: 2
- Flash Memory: 32 KB of which 4KB used by bootloader
- SRAM: 2.5 KB
- EEPROM: 1 KB
- Size: 20mm*22mm*3.8mm
- Beetle x1
Project 6. A Wristband Pedometer Based on BMI160 Motion Sensor
Recently I bought a 6-Axis Inertial Motion Sensor from DFRobot. So it occurs to me that why not make a wristband pedometer to calculate my physical strength.
The material you may need:
Gravity: I2C BMI160 6-Axis Inertial Motion Sensor ×1
Gravity I2C OLED-2864 Display ×1
3.7V Mini-Lithium Battery ×1
Toggle Switch ×1
A light can be turned on by knocking on the table.
- Gravity: I2C BMI160 6-Axis Inertial Motion Sensor
- 3.7v lithium battery charger
- 3.7v lithium battery
- 10 piranha lamp beads
- A small amount of acrylic pigment (green, yellow, blue and brown; if the gray and white pigment is provided, the oil paint does not need to be prepared)
- Light gray and white oil paint
- A good-looking 2-foot button (I bought it on Taobao)
- Lead wire (2 mm) (If no, replace it with soft iron wire)
- 40 cm PVC hollow rod (I use the one with outer diameter 9 mm and inner diameter 5 mm)
- A screw and nut with the length of 20mm
- Lightsabers by Makefun Workshop
Things you may need in this project:
- Gravity: Analog EMG Sensor by OYMotion ×1
- Beetle ×1
- 3.7v lithium battery charger ×1
- 3.7 V Lithium Battery ×1
- 9g 180° Micro Servo ×2
- Rabbit Hat ×1
- Needles and Thread
- Two-step Toggle Switch ×1
- Elastic (Width: 1.5cm Length: 40cm) ×1
- Stick ×2
- Hot Melt Adhesive
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