Development board for PIC16F1938


Raj over at Embedded Lab has designed a development board for PIC16F1938:

The PIC16F1938 is a versatile 28-pin MCU belonging to Microchip’s extreme low power microcontroller family featuring nanoWatt XLP technology, 28KB of programming memory, 1KB of RAM, 11 ADC channels, and tons of other peripherals. A while ago, I designed a development board for this MCU and I thought it would be worth sharing this design here. The development board features an onboard USB-UART bridge to support the ds30 Loader for easy programming of the PIC MCU. All I/O pins are accessible through 2×5 headers.

Development board for PIC16F1938 – [Link]

Build a Cloud-Connected ESP8266 Power Meter


Measure the DC power consumption of your devices on the cloud @

Controlling the electrical consumption in your home is one of the most important thing you can do, both because of environmental concerns & to reduce the electricity bill at the end of the month. There are countless of electrical power meters out there, but in this guide, I’ll show you how to build your own, and to use the ESP8266 feather board to measure how much power a single device is using. Note that this guide is about measuring power for DC (Direct Current) devices only.

Build a Cloud-Connected ESP8266 Power Meter – [Link]

Easy IoT weather station with multiple sensors


user Ingenerare @ published a tutorial on a IoT weather station based on NodeMcu board, DHT11/22 sensor, BMP180 sensor, Rain sensor, Light sensor.

In this tutorial, I will walk you through the steps to build an easy and cheap IOT weather station. The retrieved data is pushed via a wifi shield to Thingspeak. The data can be analysed on the Thingspeak channel or on a personal website as can be seen in the pictures above.

Easy IoT weather station with multiple sensors – [Link]

150V synchronous step-down DC/DC includes surge protection


Linear Technology designed the LTC3895 to be a non-isolated DC/DC controller with a high input voltage capability that can eliminate the need for surge suppression and operate continuously with a high input voltage.

The synchronous step-down switching regulator controller drives an all N-channel MOSFET power stage. Its 4V to 140V (150V abs. Max.) input voltage range is designed to operate from a high input voltage source or from an input that has high voltage surges, eliminating the need for external surge suppression devices. The LTC3895 continues to operate at up to 100% duty cycle during input voltage dips down to 4V, for transportation, industrial control, robotic and datacom applications.

150V synchronous step-down DC/DC includes surge protection – [Link]

Microchip’s first ARM processor with cryptographic engine


Clemens Valens @ discuss about the new CEC1302 microcontroller from Microchip. This is the first Microchip microcontroller with an ARM core. He writes:

Based on a Cortex-M4 core its main feature is its integrated cryptographic engine supporting public key encryption, symmetric key encryption, secure hashing and random number generating.

Besides its ARM core the CEC1302 incorporates 128 KB of SRAM and 32 KB of boot ROM. Contrary to popular design, the device does not have flash program memory, instead it has two SPI memory interfaces to connect to external program memory.

Microchip’s first ARM processor with cryptographic engine – [Link]

Windows 95 on an Apple Watch

Nick Lee managed to install Windows 95 on an Apple Watch. The process was not straightforward but he succeed after a few tweaks to the WatchKit app. The Apple Watch take about an hour to boot Windows 95 due to the reason that it’s an emulated version and not a virtualized one. Apple Watch runs it’s processor at 520 MHz, has 512 MB RAM and 8 GB of internal storage.
Windows 95 on an Apple Watch – [Link]

DIY WiFi Outlet using ESP8266


This tutorial will show you how to build an internet controlled outlet using ESP8266 wifi module.

In this instructable, I will take you along on my journey of building this WiFi Outlet.

DIY WiFi Outlet using ESP8266 – [Link]

LEDs deliver 76,000 candelas at a 10° beam angle

Lumileds’ second generation LUXEON CoB Compact Range LEDs feature an efficacy and output boost of up to 16% over its previous generation arrays.

The devices cover different power range directional lamps such as a 35W-equivalent and a 50W-equivalent MR-16 lamp, achieving exceptional centre beam candlepower (CBCP). At 1,500 lumens, the LUXEON CoB 209 reaches 76,000 candelas at a 10° beam angle.

LEDs deliver 76,000 candelas at a 10° beam angle – [Link]

PinJig – Make Soldering Easy


PinJig™ is a time saving tool for rapidly assembling electronics that makes soldering easy. It is a tool for makers that can clamp every single thru-hole component in one easy sequence.

Who is this product for – PinJig can be used by fellow makers, low volume manufacturers, DIY audio electronics enthusiasts, education users and  private company prototyping.

The product has a number of 3D Printable accessories and also supports many accessories from makeblock, makerbeam and openbeam due to its innovative modular mounting system.

PinJig – Make Soldering Easy – [Link]

Using USB Type-C on hobbyist projects


Tyler has build a breakout board for Type-C USB plug and explains how this can be used in various DIY projects.

The new Type-C USB connector is the latest addition to the USB connector standards. It offers reversible plugs, direction independent cables, USB3.1 speeds, and 3A charging in a connector only a little bigger than the USB 2.0 MicroB connector. In order to add these capabilities the plugs and connectors have additional configuration pins to allow devices to negotiate their state. Supporting the configuration channel may seem like a difficult challenge but it can be achieved fairly simply for the basic use cases.

Using USB Type-C on hobbyist projects – [Link]