$6.90 Wemos LoLin32 ESP32 Development Board Comes with 4MB Flash, Lithium Battery Support

Wemos – the company behind the cool Wemos D1 mini ESP8266 board – has now launched its first Espressif ESP32 development board with LoLin32 equipped with ESP-WROOM-32 module with 4MB flash, a micro USB port, and a battery header. Wemos Lolin32 specifications: Wireless Module – ESP-WROOM-32 based on Espressif ESP-32 dual core processor @ 240 MHz with 4MB flash Connectivity – 802.11 b/g/n WiFi + Bluetooth LE I/Os 26x digital I/Os 12x analog inputs UART, I2C, SPI, VP/VN, DAC 3.3V I/O voltage Breadboard compatible USB – 1x micro USB port for power and programming/debugging Power – 5V via micro USB + battery header for Lithium battery (charging current: 500mA max) Dimensions – 5.8 x 2.54 cm Weight – 5.8 grams The board is not compatible with Wemos D1 mini (34.2 x 25.6 mm) and shield, but offers a more powerful solution with Bluetooth LE, battery support, and more I/Os. The […]

Need to Program Many ESP8266 Modules? This Wemos D1 mini based Pogo Jig Programming Board Could Be Useful

If you have many ESP8266 modules to flash with your own firmware this may be time-consuming, but Wing Tang Wong’s ESP8266 Pogo Jig Programming Board could greatly streamline the process, as it just hold ESP-12F module in place using pogopins, so you can go through boards quite quickly. You’ll just need to a Wemos D1 mini board without ESP-12F module to the programming board, and then place your ESP-12F module (or compatible) between the pogopin to program it through Wemos D1 mini’s micro USB port. The board is not for sale (yet?), but the EAGLE design files can be found on Github, and it should not be difficult to find a company to manufacture a few if you need it. Via OSH Park’s Blog. Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily […]

Ten Most Popular Posts of 2016 on CNX Software and Some Stats

The last day of the year is a good time to look back at what the year brought us, and I have to say it has been a fun and interesting year on CNX Software. The TV boxes news cycle has been dominated by Amlogic products, but most products have now switched to 64-bit ARM SoC, with 4K and HDMI 2.0 support, and price have kept going down, so you can now get a 4K TV box for as low as $20, although many people will prefer spending a bit more for extra memory and support. Intel based Bay Trail & Cherry Trail mini PCs have continued to be released with Windows, and in some cases Ubuntu, but the excitement seems to have died off a bit, maybe with the expectation of upcoming Apollo Lake mini PCs that should be more powerful. The year have been especially fruitful in the […]

Some ESP32 Development Boards to Look Out For: NodeMCU, Widora-air, Nano32, Noduino Quantum, and Wemos

Espressif ESP32 WiFi + BLE SoC launched at the very beginning of the month, shortly followed by ESP3212 module, and while Adafruit sold a few breadboard-friendly ESP32 development boards to developers for $15 a few days ago, stock was limited, and it’s not possible to easily purchase ESP32 boards today, and that’s OK because firmware and software support is still in progress. Several companies are working on such ESP32 boards however, and they tend to show the development progress on social networks, so I thought it would be fun to look at what’s coming… Amica (NodeMCU) ESP32 Board The current NodeMCU board is one of the most popular ESP8266 development platform, and that’s not surprising they are working on an ESP32 version. I don’t have pictures nor full  specs of the board yet, but the company showcased their early work on ESP32 last June. Widora-air I only discovered Widora recently […]

$5 Wemos D1 mini Pro ESP8266 Board includes 16MB Flash

Wemos D1 mini is one of my favorite ESP8266 development boards thanks to its small size, shield support, and low $4 price tag. There’s now a new version of the board – dubbed Wemos D1 mini Pro – with 16MB flash instead of 4MB for the original version, and a few other modifications. Wemos D1 mini Pro specifications: WiFi 802.11 b/g/n module based on ESP8266EX with 16 MB flash, chip antenna and external antenna connector Expansion – Through holes with 11x digital input/output pins (3.3V) supporting interrupt/PWM/I2C/one-wire (except D0 pin) 1x analog input (3.3V max input) Reset and power signals (5V, 3.3V, GND) USB – micro USB port Misc – Reset button Power – 5V via micro USB or 5V pin Dimensions – 34.2 x 25.6 mm Weight – 2.5 grams Beside the larger flash,  the main differences are listed in a Wemos forum post: External antenna connector – switch […]

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 […]

$4 Wemos D1 mini ESP8266 Board Supports Shields with a Temperature Sensor, a Button, a Relay, or a micro SD slot

Wemos D1 board, a $9 ESP8266 board in Arduino UNO form factor, now has a little brother with Wemos D1 mini. The board looks somewhat similar to NodeMCU with breadboard friendly I/Os on the sides and a micro USB port for power and programming, but what could make it more interesting, beside the $4 price tag, is that the company also developed several shields (aka add-on boards). Wemos D1 mini specifications: WiFi 802.11 b/g/n module based on ESP8266EX with 4MB flash Expansion – Through holes with 11x digital input/output pins (3.3V) supporting interrupt/PWM/I2C/one-wire (except D0) 1x analog input (3.3V max input) Reset and power signals (5V, 3.3V, GND) USB – micro USB port Misc – Reset button Power – 5V via micro USB or 5V pin Dimensions – 34.2 x 25.6 mm Weight – 10 grams The board is said to be compatible with Arduino IDE and NodeMCU firmware. ESP8266 […]