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RobotDyn Black Pill - STM32F303CCT6 256KB STM32 ARM Cortex-M4 Minimum System Development Board. (ST firmware, SLD) - $10.97


  • Microcontroller: STM32F303CCT6 256KB - ARM 32 Cortex-M4. Debug mode: SWD ( with ST-LINK V2)
  • Internal Clock Max. 72MHz 1.25 DMIPS ; External Clock 8MHz, Memory 256 Kbytes of Flash + 40 Kbytes SRAM; Timers: 2+5+1+2; SPI: 3; I2C: 2; UART:3; CAN:1. Operating voltage VCC 2.0 to 3.6 V; VIN: 4 to 8 V
  • Genuine STM32 microcontroller IC Onboard original STM32 microcontroller IC. Not third party manufacturing. This is applicable for industrial projects. Drum watch quartz. This is better than a regular crystal, it allows you to count a precision time.
  • Blue Pill boards have ordinary crystals, which have a shift of up to several seconds in a day. The drum watch quartz has a very accurate count.
Vendor: Zhuhai RobotDyn Technology Co.,Ltd (China)
Category: PC Accessory
Price: $10.97


Degraw 5kg Load Cell and HX711 Combo Pack Kit - Load Cell Amplifier ADC Weight Sensor for Arduino Scale - Everything Needed for Accurate Force Measurement - $12.99


  • U.S. BASED SUPPORT - contact Degraw through Amazon messages for help with setting up the kit
  • LOAD CELL - Sturdy aluminum alloy construction with strain gauges pre-attached with strain relieved wires. Accurately measures forces from 0-5kg (0-11 lb).
  • HX711 - This top of the line load cell amplifier mounted on a breakout board pairs perfectly with the load cell to provide fast, accurate force measurements. It measures small changes in the resistance of the strain gauges mounted to the load cell and passes these values directly to any micro controller (like an Arduino or Raspberry Pi).
  • LOAD CELL SPECS - 22 cm (8.5 in) wire leads pre-attached. Dimensions 12.7 mm high, 12.7 mm wide, 80 mm long (0.5 in x 0.5 in x 3.15 in). 4 mounting holes, 15 mm spacing on each side. One both holes tapped M4 thread, the other side both holes tapped M5 thread.
  • HX711 SPECS - Operation Voltage: 2.7V-5V | Operation Current: < 1.5mA | Includes breakaway headers for connection, soldering required
Category: BISS
Price: $12.99


HiLetgo STM32F407VET6 STM32 Cortex-M4 MCU Core Board Development Board NRF2410 FMSG SD Card - $14.69


  • STM32F407VET6 chip main parameters
  • Data storage: W25Q16
  • Onboard: SD card slot
  • RTC Battery: CR1220
  • Features: 2.54mm integer multiples spacing pin
Vendor: HiLetgo
Category: BISS
Price: $14.69


Adafruit ItsyBitsy M4 Express Featuring ATSAMD51 - $15.99


  • Same size, form-factor as the ItsyBitsy 32u4 and ItsyBitsy M0, and nearly-identical pinout as both
  • ATSAMD51 32-bit Cortex M4 core running at 120 MHz
  • Hardware DSP and floating point support
  • 512 KB flash, 192 KB RAM
  • 2 MB SPI FLASH chip for storing files and CircuitPython code storage.
Vendor: Adafruit
Category: PC Accessory
Price: $15.99


Teensy 3.2 (Original Version) - $22.39


  • Drop in compatible with v3.1, more power available on 3.3V pin
  • 32 bit ARM Cortex-M4 72 MHz CPU (M4 = DSP extensions)
  • 256K Flash Memory, 64K RAM, 2K EEPROM
  • 21 High Resolution Analog Inputs (13 bits usable, 16 bit hardware)
  • 34 Digital I/O Pins (5V tolerance on Digital Inputs)
Vendor: pjrc
Category: BISS
Price: $22.39


Adafruit (PID 3505 Metro M0 Express - Designed for CircuitPython - ATSAMD21G18 - $27.29


  • ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328) and 32K of RAM (16x as much)!
  • This chip comes with built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip.
  • Power the METRO with 7-9V polarity protected DC or the micro USB connector to any 5V USB source. The 2.1mm DC jack has an on/off switch next to it so you can turn off your setup easily. The METRO will automagically switch between USB and DC.
  • METRO has 25 GPIO pins, 12 of which are analog in, and one of which is a true analog out. There's a hardware SPI port, hardware I2C port and hardware UART. Logic level is 3.3V
  • Easy reprogramming, comes pre-loaded with the UF2 bootloader, which looks like a USB storage key. Simply drag firmware on to program, no special tools or drivers needed! It can be used to load up CircuitPython, PXT MakeCode or Arduino IDE (it is bossa-compatible)
Vendor: Adafruit
Category: Personal Computer
Price: $27.29


Teensy 3.6 (Without Pins) - $33.46


  • 180 MHz ARM Cortex-M4 with Floating Point Unit
  • 1M Flash, 256K RAM, 4K EEPROM
  • Microcontroller Chip MK66FX1M0VMD18
Vendor: PJRC
Category: BISS
Price: $33.46


Adafruit 4084 Adafruit Grand Central M4 Express Featuring SAMD51 - Without Headers - $34.99


  • Cortex M4 core running at 120 MHz
  • Hardware DSP and floating point support
  • 1MB flash, 256 KB RAM
  • 32-bit, 3.3V logic and power
  • 70 GPIO pins in total
Vendor: Adafruit
Category: BISS Basic
Price: $34.99


Adafruit Feather M4 Express - Featuring ATSAMD51 - ATSAMD51 Cortex M4 - $34.99


  • 512KB Flash and 192KB RAM
  • ATSAMD51J19
  • 120MHz Cortex M4
Vendor: Adafruit
Category: Photography
Price: $34.99


FriendlyARM NanoPi M4 2GB DDR3 Rockchip RK3399 SoC 2.4G & 5G Dual-Band WiFi,Support Android and Ubuntu, AI and deep Learning,Ship with OV13850 Camera Module - $109.00


  • CPU: Model: Rockchip RK3399;OS Support: Android 7.1.2; Ubuntu18.04(64bit); Lubuntu 16.04 (32-bit); Frequency: Cortex-A72(up to 2.0GHz), Cortex-A53(up to 1.5GHz)
  • Memory: Dual-Channel 2GB DDR3-1866; Storage: no Onboard eMMC, but has a eMMC socket; MicroSD Slot for external storage up to 128GB
  • USB 3.0*4: USB 3.0 Type-A ports;USB Type-C*1: Supports USB2.0 OTG and Power input; USB Host*2 (included in GPIO2 2.54mm pitch pin header)
  • Connectivity: Native Gbps Ethernet; WiFi: 802.11a/b/g/n/ac, Bluetooth 4.1, Wi-Fi and Bluetooth combo module, dual antenna interface; DC 5V/3A
  • It has the same form of factor as the RPi B3+ and has ports and interfaces compatible with RPiB3+ too. Which used in applications of machine learning, AI, VR,deep learning,robots,industrial control,industrial cameras,advertisement machines,game machines,blockchain and etc.
Vendor: FriendlyElec
Category: PC Accessory
Price: $109.00


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