Template: Pico Kit B Spec

Raspberry Pico

Raspberry Pi Pico is a low-cost, high-performance microcontroller board with flexible digital interfaces. It incorporates Raspberry Pi's own RP2040 microcontroller chip, with a dual-core Arm Cortex M0+ processor running up to 133 MHz, embedded 264KB of SRAM, and 2MB of onboard Flash memory, as well as 26x multi-function GPIO pins.
For software development, either Raspberry Pi's C/C++ SDK or the MicroPython is available. There are also complete development resources and tutorials to help you get started easily, and integrate it into end products quickly.

Details of the Start Kit

1. Raspberry Pi Pico with pre-soldered header x1
2. Pico-LCD-1.14 x 1
3. Pico-10DOF-IMU x 1
4. Breadboard x1
5. 1*3PIN yellow pin header x 1
6. Pico-Dual-Expander x 1
7. USB-A to micro-B cable x 1
8. Jumper wires x 1

Features

• RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
• Dual-core Arm Cortex M0+ processor, the flexible clock running up to 133 MHz
• 264KB of SRAM, and 2MB of onboard Flash memory
• Castellated module allows soldering direct to carrier boards
• USB 1.1 with device and host support
• Low-power sleep and dormant modes
• Drag-and-drop programming using mass storage over USB
• 26 × multi-function GPIO pins
• 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
• Accurate clock and timer on-chip
• Temperature sensor
• Accelerated floating-point libraries on-chip
• 8 × Programmable I/O (PIO) state machines for custom peripheral support

Pinout

Pico-10DOF-IMU

Feature

• Standard Raspberry Pi Pico header supports Raspberry Pi Pico series.
• Onboard MPU9250 (3-axis gyroscope, 3-axis accelerometer, and 3-axis magnetometer) for detecting motion gesture, orientation, and magnetic field.
• Onboard LPS22HB barometric pressure sensor, for sensing the atmospheric pressure of the environment.

Specifications

• Operating voltage: 5V
• Accelerometer:
  • resolution: 16-bit
  • measuring range (configurable): ±2, ±4, ±8, ±16g
  • operating current: 68.9uA
• Gyroscope:
  • resolution: 16-bit
  • measuring range (configurable): ±250, ±500, ±1000, ±2000°/sec
  • operating current: 1.23mA
• Magnetometer:
  • resolution: 14-bit
  • measuring range: ±4800µT
  • operating current: 280uA
• Baroceptor
  • measuring range: 260 ~ 1260hPa
  • measuring accuracy (ordinary temperature): ±0.025hPa
  • measuring speed: 1Hz - 75Hz

Pinout

Pico LCD 1.14

Features

• 240 × 135 resolution, IPS screen, 65K RGB colors, clear and colorful displaying effect.
• SPI interface, requires minimal IO pins.
• 4 x user buttons for easy interacting.

Specifications

• Operating voltage: 2.6~5.5V
• Resolution: 240 x 135 pixels
• Communication interface: 4-wire SPI
• Display size: 24.91 x 14.86mm
• Display panel: IPS
• Pixel size: 0.1101 x 0.1035mm
• Driver: ST7789
• Dimensions 52.00 x 25.00mm

Pinout

Dimension

LCD and the controller

The ST7789VW is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 240 source line and 320 gate line driving circuits. The resolution of this LCD is 135 (H) RGB x 240 (V), it supports horizontal mode and vertical mode, and it doesn't use all the RAM of the controller.
This LCD accepts 8-bits/9-bits/16-bits/18-bits parallel interface, that are RGB444, RGB565, RGB666. The color format used in demo codes is RGB565.
This LCD uses a 4-line SPI interface for reducing GPIO and fast speed.

Working Protocol

Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has a display requirement.
RESX is the reset pin, it should be low when powering the module and be higher at other times;
CSX is slave chip select, when CS is low, the chip is enabled.
D/CX is data/command control pin, when DC = 0, write command, when DC = 1, write data
SDA is the data pin for transmitting RGB data, it works as the MOSI pin of SPI interface;
SCL work s the SCLK pins of SPI interface.
SPI communication has data transfer timing, which is combined by CPHA and CPOL.
CPOL determines the level of the serial synchronous clock at an idle state. When CPOL = 0, the level is Low. However, CPOL has little effect on the transmission.
CPHA determines whether data is collected at the first clock edge or at the second clock edge of the serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.
There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.