2.5A is now a requirement for the Raspberry Pi 3. The CanaKit 2.5A Raspberry Pi power supply / adapter has been specially designed and tested for the new Raspberry Pi 3 and incorporates an inline noise filter for highest stability and reliable operation.
This power supply differs from typical standard 5V USB power supplies in the market in that it can deliver a full 2.5A and still output a voltage well within the USB minimum voltage specifications. Standard 5V USB power supplies in the market have a high voltage drop when the full current is drawn from them which may cause the Raspberry Pi to reboot unexpectedly.
With this power supply, you can power the Raspberry Pi 3 at full load as well as up to 1.2A across the four USB ports. The power supply still has about 0.5A of output power to spare, so even at the maximum current supported by the Raspberry Pi 3, the power supply is not at its absolute maximum.
It is also ideal for use by anyone over-clocking the Raspberry Pi which causes higher power requirements that a lower power adapter may not be able to supply.
The Raspberry Pi 3 has included integrated 802.11 b/g/n wireless LAN, Bluetooth Classical and LE. You
didn't need additional peripherals to make it wireless. It is 10x the performance of Raspberry Pi 1.
What's more, it has complete compatibility with Raspberry Pi 2, which means almost all the previous
Raspberry Pi 2 accessories are compatible with Raspberry Pi 3.
The Raspberry Pi 3 is the third generation Raspberry Pi. It replaced the Raspberry Pi 2 Model B in
Compared to the Raspberry Pi 2 it has:
A 1.2GHz 64-bit quad-core ARMv8 CPU
802.11n Wireless LAN
Bluetooth Low Energy (BLE)
Like the Pi 2, it also has:
4 USB ports
40 GPIO pins
Full HDMI port
Combined 3.5mm audio jack and composite video
Camera interface (CSI)
Display interface (DSI)
Micro SD card slot (now push-pull rather than push-push)
VideoCore IV 3D graphics core
NodeMCU is an open source IoT platform.It uses the Lua scripting language. It is based on the eLua project, and built on the ESP8266 SDK 0.9.5. It uses many open source projects, such as lua-cjson,and spiffs. It includes firmware which runs on the ESP8266 Wi-Fi SoC, and hardwarewhich is based on the ESP-12 module.
STM32F103C8T6 minimum system core board
This is a based on STM32F103C8T6 ARM chip core chip , has the following characteristics:
1, on board the most basic circuit based on MCU , such as crystal oscillator circuit, USB power management circuit and USB interface.
2, the core board leads to all the I / O port resources.
3, with SWD simulation debug download interface, the interface requires at least 3 lines to complete the debug download task, compared to the traditional JTAG debugging has many benefits, insert a sentence here, JTAG now have a lot to be eliminated trend, For example, ST M0 series of new MCU only retained the SWD debug interface, JTAG was canceled
4, the size is only the size of the traditional DIP40 package (such as AT89S52 ), has not yet found on Taobao smaller than the same specifications of the core board.
5, using the current Mirco USB smart phone interface, easy to use, can do USB communication and power supply.
6. For the problem that the STM32 RTC can not vibrate, we adopt the officially recommended low-load RTC crystal solution and use the Epson brand crystal instead of the cheap cylindrical crystal.
7, with a single row of high quality 1 * 40 / 2.54mm pitch pin to ensure good conductive contact, user-friendly core board placed on the standard board or breadboard. Header default is not welded, the user can choose according to their needs welding direction.
Chip Description: 1, STM32F103C8T6
Package Type: LQFP;
Number of pins: 48;
Kernel: Cortex- M3;
Working frequency: 72MHz;
Storage resources: 64K Byte Flash, 20KByte SRAM;
Interface Resources: 2x SPI, 3x USART, 2x I2C, 1x CAN, 37x I / O,
A / D conversion: 2x ADC (12-bit / 16-channel)
Timer: 3 ordinary timer 1 advanced timer
Debugging Download: support JTAG / SWD interface debug download, support IAP.
2, RT9193: 3.3V voltage regulator chip, the maximum output 300mA.
Other MCU parameters are as follows
1, SWD interface: support for simulation, download and debugging.
2, Mirco USB interface: power supply and USB communication function, does not support download.
3, USART1 interface: USART1 can be used to download program, or use the USART1 for communication.
4, MCU pin interface: leads all I / O port pins, easy to connect with peripherals.
5, 5V and 3.3V power input and output interface: Commonly used in external power supply, or with other modules to deal with
other devices Description:
1, Power LED (PWR): power indication status, to determine whether the power is stable.
2, the user LED (PC13): easy I / O output test or indicate the program running status.
3, start jump jump to choose programming: (1, user flash 2, SRAM 3, system memory).
4, reset button: for user reset chip program.
5,8 M Crystal: frequency multiplier can be set so that the system clocked at 72MHz.
6,32.768KHz Crystal: for built-in RTC use, or for calibration.
STM32F103C8 main chip
8M crystal(PLL up to 72M)
LM1117-3.3V regulation module, Max.offer 800mA current
1* MiniUSB interface
Standard JTAG port, support JLink, STLink
Boot selection port
IO expansion pin 20Pin*2
Power indicator lamp *1
Function indicator lamp*1, for IO port basic function
20K RAM, 64K ROM,
|ROM Breakpoints (ARM7/9)||2 max|
|ROM Breakpoints (Cortex-M3)||8 max|
|ROM Breakpoints (µPSD)
|ROM Breakpoints (XC800)
|ROM Breakpoints (XC166)||4 max|
|Access Breakpoints (ARM7/9)||2 max
|Access Breakpoints (Cortex-M3)||4 max
|Access Breakpoints (µPSD)||3 max|
|Access Breakpoints (XC800)||1 in IDATA max|
|Access Breakpoints (XC166)||1 max|
|Real-Time Agent (ARM7/9)|
|Serial Wire Debug (Cortex-M)|
|Data Trace (Cortex-M3)
|Instruction Trace (Cortex-M3)
|JTAG Clock||<= 10MHz|
|Memory R/W||≈ 28KB/s|
|Flash R/W||≈ 25KB/s|
|Data Trace Streaming||1Mb/s|
|I/O Voltage Range||2.7V - 5.5V|
|Supported Device Families|
The Raspberry Pi Camera Board Features a 5MP (2592×1944 pixels)
Omnivision 5647 sensor in a fixed focus module
The module attaches to Raspberry Pi, by way of a 15 Pin Ribbon Cable, to the dedicated 15-pin MIPI Camera Serial Interface (CSI)
The CSI bus is capable of extremely high data rates, and it exclusively carries pixel data to the BCM2835 processor
The sensor itself has a native resolution of 5 megapixel, and has a fixed focus lens onboard
The camera is capable of 2592 x 1944 pixel static images, and also supports 1080 p @ 30 fps, 720 p @ 60 fps and 640 x480 p 60/90 video recording
The camera is supported in the latest version of Raspbian, the Raspberry Pi's preferred operating system
Fully Compatible with Both the Model A and Model B Raspberry Pi
5 MP Omnivision 5647 Camera Module
Still Picture Resolution: 2592 x 1944
Viewing angle: 69.9 degrees
Camera angle: Size can be replaced
Video: Supports 1080 p @ 30 fps, 720 p @ 60 fps and 640 x480 p 60/90 Recording 15-pin MIPI Camera Serial Interface
Size: Approx. 25 x 24 x 9 mm /0.99 x 0.95 x 0.36 inch
Image Color: Black and White
1. A module chip using PCF8591
2. module supports external voltage input capture (input voltage range 0-5v)
3. Three modules integrated photoresistor acquisition environment through the AD intensity accurate numerical
4. modules integrated thermistor, can capture the precise value of the ambient temperature through the AD
5. The five-module integrated 1 channel 0-5V voltage input acquisition (blue potentiometer to adjust the input voltage)
6. modules with power indicator light (on the module after power indicator lights)
7. modules with the DA output indicator light board DA output indicator module DA output interface voltage reaches a certain value, the voltage the greater the light brightness is more obvious;
8. module PCB size: 3.6cm * 2.3cm
9. standard double-sided, plate thickness 1.6mm, the layout is nice, surrounded by the through-hole, aperture: 3mm, convenient fixed
PCF8591 operating voltage range of 2.5V to 6V
Low standby current
Through the I2C bus serial input / output
PCF8591 by 3 hardware address pins addressing
Sampling rate PCF8591 I2C bus rate decided
4 analog inputs programmable as single-ended or differential inputs
Automatic incremental channel selection
PCF8591 analog voltage range from VSS to VDD
PCF8591 built-in track and hold circuit
8-bit successive approximation A / D converter
Through an analog output DAC gain
The module's left and right, respectively, the external expansion of 2-way pin interface, respectively, as follows:
Output interface of the left the AOUT chip DA
The AINO chip analog input interface.
AIN1 chip analog input interface
AIN2 chip analog input interface
AIN3 chip analog input interface
The right side of the SCL IIC clock interface to access the microcontroller IO port
The SDA IIC digital interface connected microcontroller IO port
GND module to an external
VCC power supply interface external 3.3v-5v
Module red jumper instructions for use
Module three red short circuit cap, respectively, the role are as follows:
P4 connected to the P4 jumper, select thermistor access circuit
P5 connected to P5 jumper to select the photoresistor access circuit
P6 connected to the P6 jumper, to select 0-5V adjustable voltage access circuit
1 X PCF8591 Module
4 X Dupond Cable