PICO-Cam-A Guide

Resource

Demo

Demo

Schematic

Schematic

Official Resources

Raspberry Pi Official Datasheet

Raspberry Pi Open-source Demo

Development Software

Overview

PICO-CAM-A is a high-performance microcontroller camera development board designed by Waveshare. With an HM01B0 grayscale camera and a 1.14-inch IPS display screen, it also has onboard 13 GPIO pin headers and a Debug interface, making it easy for users to develop with better integration into applications.

Features

RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom.
Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz.
264KB of SRAM, and 16MB of onboard Flash memory.
Type-C connector, keeps it up to date, easier to use.
On-board HM01B0 grayscale camera.
Onboard 1.14inch 240×135 pixels 65K colorful IPS LCD for clear color pictures.
USB 1.1 with device and host support.
Low-power sleep and dormant modes.
Drag-and-drop programming using mass storage over USB.
13 × multi-function GPIO pins.
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.

Parameters

LCD Specifications
Controller	ST7789V	Resolution	135(H)RGB x 240(V)
Communication Interface	SPI	Display Dimensions	14.864（H）x 24.912（V）mm
Display Panel	IPS	Pixel Size	0.1101（H）x 0.1035（V）mm

Pinout

Dimensions

Get Started with Pico

Introduction

Raspberry Pi Pico

C/C++ Series

Open-source Demo

Sample Demo

C Demo

Demo Explanation

Demo Explanation
This example primarily involves capturing images through the camera and displaying them on a 1.14-inch LCD. The demo utilizes multi-core processing, with Core 1 responsible for acquiring image data and image processing, while Core 0 handles the image display.
Core 1 Demo Explanation

Data Pushing
multicore_fifo_push_blocking() is a function provided by Pico SDK for pushing data to the FIFO (First In, First Out) queue of the multi-core system. Here, Core 1 will push the data to FIFO, and Core 0 will block to wait for the FLAG_VALUE data from Core 1.

multicore_fifo_push_blocking(FLAG_VALUE);

Wait for Data
Core 1 blocks and waits for the data from Core 0.

uint32_t ack = multicore_fifo_pop_blocking();

LCD Initialization
Call DEV_Module_Init() to initialize the pins and buttons related to the LCD, and call LCD_1IN14_V2_Init() to initialize the LCD.

DEV_Module_Init();
LCD_1IN14_V2_Init(HORIZONTAL);
LCD_1IN14_V2_Clear(BLACK);
UDOUBLE Imagesize = LCD_1IN14_V2_HEIGHT * LCD_1IN14_V2_WIDTH * 2;
UWORD *BlackImage;
if ((BlackImage = (UWORD *)malloc(Imagesize)) == NULL)
{
    printf("Failed to apply for black memory...\r\n");
    exit(0);
}

Display Image
Call Paint_DrawImage() to draw imahes, and call LCD_1IN14_V2_Display() to display the images on the LCD.

Paint_NewImage((UBYTE *)BlackImage, LCD_1IN14_V2.WIDTH, LCD_1IN14_V2.HEIGHT, 0, WHITE);
Paint_SetScale(65);
Paint_SetRotate(ROTATE_0);
Paint_DrawImage(gImage_waveshare, 0, 0, 240, 135);
LCD_1IN14_V2_Display(BlackImage);
DEV_Delay_ms(500);

Camera Initialization
This code segment calls cam_config_struct() to initialize the camera configuration structure "config" and then proceeds to initialize the camera by calling cam_init().

struct cam_config config;
cam_config_struct(&config);
cam_init(&config);

Image Processing
This code segment is a loop where the camera captures a frame in each iteration, processes the image, and ultimately stores the processed image data in "displayBuf". The "imageReady" flag is then set to 1, indicating that the image is ready for display.

while (true) {
    cam_capture_frame(&config);

    uint16_t index = 0;
    for (int y = 134; y > 0; y--) {
        for (int x = 0; x < 240; x++) {
            uint16_t c = image_buf[(y)*324+(x)];
            uint16_t imageRGB = (((c & 0xF8) << 8) | ((c & 0xFC) << 3) | ((c & 0xF8) >> 3));
            displayBuf[index++] = (uint16_t)(imageRGB >> 8) & 0xFF;
            displayBuf[index++] = (uint16_t)(imageRGB) & 0xFF;
        }
    }

    imageReady = 1;
}

Core 0 Demo Explanation

Boots Core1
multicore_launch_core1 is the function provided by Pico SDK for booting Core 1 on the Raspberry Pi Pico. This code boots the function specified by Core 1 through calling multicore_launch_core1().

multicore_launch_core1(core1_entry);

Wait for data
Core 0 blocks and waits for data from Core 1, if successfully received data FLAG_VALUE then send data to Core 1.

uint32_t ack = multicore_fifo_pop_blocking();
if (ack != FLAG_VALUE)
    printf("Error: Core 0 failed to receive acknowledgment from core 1!\n");
else {
    multicore_fifo_push_blocking(FLAG_VALUE);
    printf("Success: Core 0 Received acknowledgment from core 1!\n");
}

Main Loop
Continuously checks the "imageReady" flag in the main loop. Once the flag is detected as 1, indicating that the image is ready for display, it calls LCD_1IN14_V2_Display() to show the image. After the display, it resets the "imageReady" flag to 0.

while (1) {
    if (imageReady == 1) {
        LCD_1IN14_V2_Display((uint16_t*)displayBuf);
        // Reset the imageReady flag after displaying the image
        imageReady = 0;
    }
    DEV_Delay_ms(1);
}

Run the Demo

After programming the firmware and powering up, the PICO-Cam-A displays the boot-up screen and then shows the camera's captured images in real-time.

Resource

Demo

Demo

Schematic

Schematic

Official Resources

Raspberry Pi Official Datasheet

Raspberry Pi Open-source Demo

Development Software

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com

TAG： ESP32-S3FH4R2 UART Serial Server Retail electronic Tag i5-1135G7 Industrial USB to RS485 Converter Solar Charge Module Computer Desktop Monitor Display Raspberry Pi 5 PoE MINI HAT(G) Power over RJ45 Ethernet 802.3af/at Moudle for Pi5 Serial UART Bus Servo CF35-12 TTL 35KG.CM Magnetic-Encoder High precision and Large torque Raspberry Pi display UGV Rover PT Kit AI OpenCV Robot Car MediaPipe For Jetson Orin STM32 0.96inch RGB OLED Luckfox Pico Camera MIS5001 5MP wide-angle lenses‌ For RV1106/Pro/MAX/Ultra (Not For RV1103 Pico) Pan-Tilt Kit RP2040 LoRa 1.5inch LCD X1002 Raspberry Pi 5 PCIe to M.2 NVMe SSD Adapter Board HAT Pi5 2280 Lichee-Tang-Primer-20K-FPGA-Unboxing Spotpear Raspberry Pi 5inch Display

Raspberry Pi Pico RP2040 HM01B0 Camera Bevelopment Board 1.14inch LCD ST7789

TAG： Desktop Ornament Pi5 PCIe USB to JTAG AI Board DeepSeek XiaoZhi AI Voice Chat Robot BOX ESP32-S3 Development Board 3.5 inch LCD N16R8 Touchscreen Display 6-Axis /Camera /SD Milk-V Duo IO Board 0.96inch1.3inch1.44inch1.8inch LCD Display Screen Round Arduino Raspberry Pi ESP32 Pico STM32 L76K GNSS UART Interface mini GPS SeeedStudio-XIAO LuckFox Core3566 Raspberry Pi Pico 2 RP2350 bit board Size & Port high Compatible With BBC Micro:bit Milk-V Duo SpotPear Spotpear Raspberry Pi 5 IMX219 Mechanical Keyboard 240x280 Motor Testing Module Raspberry Pi 7 inch HMI industrial DSI Display LCD 7inch TouchScreen Computer 720×1280 Raspberry Pi 4 Model B 1GB ESP32 Google Dinosaur game