IoT Guru Blog

ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. The ESP32 series employs a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations and includes built-in antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power-management modules.

• CPU: Xtensa dual-core (or single-core) 32-bit LX6 microprocessor
• Ultra low power (ULP) co-processor
• 520 KiB SRAM
• Wi-Fi: 802.11 b/g/n
• Bluetooth: v4.2 BR/EDR and BLE (shares the radio with Wi-Fi)
• 12-bit SAR ADC up to 18 channels
• 2 × 8-bit DACs
• 10 × touch sensors (capacitive sensing GPIOs)
• 4 × SPI
• 2 × I²S interfaces
• 2 × I²C interfaces
• 3 × UART
• SD/SDIO/CE-ATA/MMC/eMMC host controller
• SDIO/SPI slave controller
• Ethernet MAC interface with dedicated DMA
• CAN bus 2.0
• Infrared remote controller (TX/RX, up to 8 channels)
• Motor PWM
• LED PWM (up to 16 channels)
• Hall effect sensor
• Ultra low power analog pre-amplifier

https://www.ebay.com/itm/183413480551

STM32L082 Development Board with SX1276 LoRa Radio, programmable using Arduino IDE via USB Connector.

The development board exposes 19 GPIOs to the user as well as 3V3, GND, VIN, and VREF (for the analog sector), has an indicator led on GPIO 13 as well as a power-on led that can be disabled via a solder jumper for lowest power usage, and has an on-board antenna suitable for either 868 or 915 MHz.

https://www.seeedstudio.com/Grasshopper-Development-Board-p-4792.html

This is an adapter board for connecting Wio Terminal with Raspberry Pi’s Pi Hats. This makes it a lot easier for connecting them and of course better appearance. Before this simple design, you will need to use jumper wires.

https://www.seeedstudio.com/40-Pin-Raspberry-Pi-Hat-Adapter-Board-For-Wio-Terminal-p-4730.html

Raspberry Pi 4 is the latest product in the popular Raspberry Pi range of computers, and this is the version with the highest RAM offered by a Raspberry Pi ever (8GB). It offers ground-breaking increases in processor speed, multimedia performance, memory, and connectivity compared to the prior-generation Raspberry Pi 3 Model B+.

https://www.seeedstudio.com/Raspberry-Pi-4-Computer-Model-B-8GB-p-4595.html

CH551G development board features the CH551 chip, which is an enhanced e8051 core single-chip microcomputer compatible with MCS51 instruction set. 79% of its instructions are single-byte single-cycle instructions, and the average instruction speed is 8-15 times faster than the standard MCS51.

More information:
https://www.seeedstudio.com/CH551G-Development-board-p-4764.html

Atom Lite is a very compact development board in the M5Stack development kit series with a size of only 24 * 24mm. It provides more GPIO for user customization which is very suitable for embedded smart home devices and in making smart toys.

• USB Type-C
• ESP32-based
• 4 MByte flash
• Reset button
• RGB led
• Programmable button
• Infra-red
• GPIO (Dupont Pins)

More information:
https://www.banggood.com/M5Stack-ATOM-Lite-ESP32-Development-Board-Kit-Neo-LED-Blockly-Programmable-Kit-p-1645120.html

• ESP32 Standard wireless functions
• WiFi、Bluetooth
• Internal 16M Flash
• Low Power Display
• Multi-Point touch screen
• 180 degree viewing angle
• Built-in Magnet
• Internal 1150mAh Battery
• Expandable – HY2.0-4P 3 x external expansion ports

More information:
https://www.banggood.com/M5Stack-M5Paper-ESP32-Development-Kit-960X540-4_7-Inch-eInk-Display-235-PPI-IoT-Terminal-E-Book-Industrial-Control-Panel-p-1779386.html?cur_warehouse=CN