Category: Mcu

It has been about one year since the announcement of ESP32 SoC and the beginning of its beta testing for some developers. Last Month we covered the release of ESP-WROOM-32 module datasheet,  which promised that “New SDK features, tutorials and example applications will be...

Jesus @ jechavarria.com pointed us to his latest project, a portable temp, humidity and ambient light datalogger. Hi all! I’m continuing here with the last board I design and now I’m continuing testing. It’s a battery-powered small datalogger based on a PIC18F2620...

Low-cost, open-source "sip-and-puff" interface to enable new methods of expression for people with and without limited mobility. by Jason Webb: Commercial sip and puff devices have been available for quite some time but are generally prohibitively expensive, highly specialized,...

SunDuino is a Single Board Computer with integrated Battery Charger, Voltage Regulators, I2C, Digital and Analog IO. It's main benefit is that it can run a compiled C app for years on a small battery or forever using built in solar charger. A background RTOS provides SLEEP...

If your application needs a controller with display interface and a network connectivity, then you need to think about using 4Duino from 4D Systems, a 2.4" TFT LCD IoT display module. 4Duino key features 4Duino has ATmega32U4, a 8-bit MCU from Atmel, which is the same...

Meet NanoPi NEO the latest member in NanoPi family from FriendlyARM. NanoPi NEO features Allwinner H3 CPU, a Quad-core Cortex-A7 Up to 1.2GHz CPU. It’s available with 256MB DDR3 RAM or 512MB one with additional 2$ for the last one. The board has 10/100M Ethernet RJ-45 jack,...

Bluetooth 4.0 introduced the Bluetooth low energy (BLE), which is a version of Bluetooth protocol designed for devices with power constraints like battery powered sensors. Bluetooth low energy beacons are BLE (Bluetooth Low Energy) enabled devices, they repeatedly broadcast radio...

The RFM69GW is a RFM69 to MQTT gateway that uses the ubiquitous ESP8266 chip. There are two or three similar projects that I'm aware of but I've put together some hardware and firmware features that make it different. by Xose Pérez: I'm using Felix Rusu's RFM69_ATC library so it...