esp8266 News - Page 17 of 21 - CNX Software

May 19, 2016 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Arduino Primo Board Supports WiFi, Bluetooth LE, and NFC

A couple of weeks after unveiling Arduino UNO WiFi with ESP8266 and Atmel AVR, Arduino Srl has introduced Arduino PRIMO board with Nordic Semi nRF52 MCU with Bluetooth Smart and NFC, ESP8266 for WiFi, and STM32 to handle GPIOs and USB UART during May Faire Bay Area 2016. Arduino Primo board (A000135) specifications: Service Micro-controller STMicro STM32F103R8T6 ARM Cortex-M3 MCU @ 72 MHz with 64KB flash, 20KB SRAM USB/Uart converter & CMSIS-DAP GPIO expander, IrDA Board power management Operating Voltage – 2.0 to 3.6 V Arduino Micro-controller Nordic nRF52832 ARM Cortex-M4F MCU @ 64 MHz with 512 KB flash, 64KB SRAM Analog I/O Pins – 6 + 1 DAC DC Current per I/O Pins – 7 mA Bluetooth Smart – Up to +4 dBm output power, -96 dBm sensitivity Other features – PDM interface, AES HW enc, NFC tag WiFi Micro-controller Espressif ESP8266 Tensilica Xtensa LX106 WiSoC @ 80 MHz […]

May 18, 2016May 18, 2016 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Programming ESP8266 Boards with a Smartphone

In recent days, I wrote about low cost MCU boards such as the $2 BluePill, and the One Dollar Board project, but several people commented that while the board themselves are very cheap, it might still be a problem in some developing countries, where access to computers cannot be taken for granted. So person suggested that such initiative would work better in some countries if programming was possible via a smartphone instead. Is that true? According to a 2014/2015 study by Pew Research Center, there is some truth to it, but it varies greatly between countries. For example, 55% of Brazilian adults own a computer at home, while only 24% own a smartphone, but in Kenya only 8% own a computer at home, while 15% own a smartphone. Some devices in the “cellphones but not smartphones” might be feature phones with WiFi and a web browser. Anyway ideally a low […]

May 15, 2016April 8, 2023 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Getting Started with Wio Link Starter Kit, Visual Programming Android App, and IFTTT

Wio Link is a board based on ESP8266 WiSoC that is supposed to be easy to set up thanks to Grove modules – no breadboard and mesh or wires – and, as I first understood it, to program thanks to a drag-and-drop mobile app that does not require any actual programming. More advanced users can also use a RESTful API in Python, JavaScript, Node.js, PHP, Objective-C or Java. I’ve been sent a $49 Wio Link Starter Kit including the board, a USB cable, and six Grove modules to evaluate the kit. I’ll start by having a look a the kit, before experimenting with the Wio Link Android app. Wio Link Starter Kit Unboxing The kit is sent in a red plastic case. Wio Link board is lodged in the top cover, and other accessories are placed in bags in the main part of the case. Let’s check the board first. […]

May 3, 2016May 7, 2016 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

Arduino UNO WiFi Board Combines Atmel ATmega328P MCU with ESP8266 SoC

Arduino.org (Arduino Srl) has launched Arduino UNO WiFi board, bringing Arduino (Atmel ATMega328P MCU) and ESP8266 together, and adding WiFi to the popular Arduino UNO board, while keeping all existing interfaces and headers. Arduino UNO WiFi (A000133) board specifications: Arduino part MCU – Atmel ATmega328 8-bit AVR MCU @ 16 MHz with 32 KB flash Memory, 2KB SRAM, 1KB EEPROM Digital I/O pins – 14, with 6 PWM and UART Analog Input Pins – 6 DC Current per I/0 – 40 mA Misc – Reset button Operating Voltage – 5 V ESP8266 part SoC – Expressif ESP8266EX Tensilica Xtensa LX106 processor @ 80 MHz Storage – 4MB SPI flash Connectivity – 802.11 b/g/n WiFi @ 2.4 GHz, wake up time < 2 ms; Antenna: PCB and IPX Misc – Bootloader button, WiFi LED Operating Voltage – 3.3 V Common specs USB – 1x USB device port Input Voltage – 5-12 […]

May 2, 2016August 29, 2018 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Electrodragon WiFi IoT Relay Includes ESP8266 Module, AC Power, and Enclosure for $6

Thanks to ESP8266, the cost of WiFi relays has dramatically come down, but so far, I could not find an all-in-one solution with ESP8266, relay, AC power and enclosure, and for example I’m still using NodeMCU board, a relay board, a USB power supply, and put all that into a plastic jar in order to control a water pump. It works but it’s not ideal, and solutions like Wemos D1 mini with relay shield improves things further, but Electrodragon has come with a connect-and-play WiFi IoT relay that integrates everything including the case for $6 + shipping. Wifi IoT Relay Board Based on ESP8266: WiFi module – ESP-12F based on Espressif ESP8266EX WiSoC Relays – 2x Songle SRD-05VDC-SL-C relays supporting 125VAC/10A, 250VAC/10A, 30VDC/10A, 28VDC/10A Input/Output – 3x terminal blocks for relay and power Expansion – 12-pin header with Rx/Tx, GPIO4, Btn2, GPIO15, 5V/GND, ADC, GPIO5, Btn1, OUTPUT1, and 3V3 Debugging […]

March 28, 2016March 28, 2016 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Learn How to Build Your Own Open Source Hardware ESP8266 Smartwatch

ESP8266 might be the cheapest WiFi SoC for IoT application available, but it’s not really renowned for its power efficiency, and is often not considered the best choice for battery powered applications. This has not stopped Jeifa from developing a WiFi smartwatch based on the chip, and the 250 mAh battery used in the design is said to be good enough for 1 or 2 days of operation on a charge. Main components of Jeija’s ESP8266 smartwatch: SoC – Espressif ESP8266 with 32Mbit of flash memory Display – SSD1306 OLED Display, 128×64 resolution Connectivity – 802.11 b/g/n WiFi (via ESP8266) Sensor – Invensense MPU-9250 gyroscope, accelerometer, and compass Debugging / Programming – FT232RQ for USB communication Misc RV-3029-C2 Real Time Clock with alarm function, and temperature sensor 3x user buttons Vibration Motor Power 250mAh LiPo battery MCP73831 LiPo charger Dimensions – 35 x 39 x 11mm (board) He designed the […]

March 25, 2016September 8, 2021 by Jean-Luc Aufranc (CNXSoft) - 22 Comments

ESP8266 and ESP32 Differences in One Single Table

Espressif Systems ESP8266 is a very popular platform for IoT applications relying on WiFi, at least for hobbyists, while Espressif ESP32 is the new solution from the company that adds a CPU core, faster WiFi, Bluetooth 4.2, and various I/Os which should launch very soon. Amica.io released a table showing the main differences between the two processors which are expected to coexist in the market with ESP8266 used in the lower-cost segment, and ESP32 in applications requiring WiFi and Bluetooth, or some of the new interfaces. Some of the features were clearly listed when ESP32 was first announced, but for example, I was not aware that an Ethernet MAC, and a temperature sensor were built into the new SoC. Other interesting features for the new ESP32 processor include a touch sensor, and hardware PWM both of which are missing in ESP8266. The new dual-core processor also builds on existing features, […]

March 22, 2016August 7, 2016 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

Getting Started with Wemos D1 mini ESP8266 Board, DHT & Relay Shields

Wemos D1 mini is an ESP8266 board that’s interesting thanks to its size, its low price ($4), micro USB power, its shields, and a documentation that looks fairly good. The board can be programmed with Arduino or Lua, and supports both serial and OTA programming. I’ve decided to give it a try and bought the board together with two temperature shields, a relay shield, and micro SD shield. I got all for $ 14.00 from Wemos Aliexpress shop, and it took about one month for delivery. I can also see they’ve recently released a new OLED shield selling for about $5. All shields were shipped inside their own anti-static bags. The pins are clearly marked on both side of the board and the shields. One side of the board features ESP8266 module. and the other side has CH340 serial to USB chip, and the reset button. The provided headers make […]