SparkFun Electronics Eagle Libraries


Sparkfun has their own Eagle libraries available on This is a great resource for new board designs. They also have a guide on how to install the libraries and how to create custom footprints.

This is the complete SparkFun Electronics default foot prints for Eagle 6.0+. We switched to Eagle back in 2006 and have been extremely impressed with its ease of use and flexibility. As with any new software, it’s like learning a new language and takes time. Do it. Eagle is great.

SparkFun Electronics Eagle Libraries – [Link]

Mikron 1663RU1 – 16 Mibit SRAM Die-Shot


Here is a die-shot, this time it’s a 1663RU1 from Russia’s Mikron semiconductor manufacturer. At the time of its release this was Russia’s first 90nm chip (by comparison 14nm is now available).

Mikron is currently the most advanced microelectronic fab in Russia, located in Zelenograd. In 2010 they have licensed 90nm technology from STMicroelectronics, and equipment setup was somewhat ready by the end of 2012. Technology transfer was hindered by very small manufacturing volume and scarce funding. Nevertheless, 1663RU1 has became their first 90nm product reached commercial customers. It’s 16 Mibit SRAM chip.

Mikron 1663RU1 – 16 Mibit SRAM Die-Shot – [Link]

Real time clock and temperature monitor with a DS3231 and a Color TFT

In this video is building a Real Time clock and temperature monitor with a big 3.2″ Color TFT display. They are using a DS3231 Real Time clock module to get the time, the date and the temperature. The heart of the project is the powerful Arduino Due board, which can drive the display and update it without any visible flickering at all! Impressive. Let’s start!

A few weeks ago, I tested this 3.2” color TFT display for Arduino with both Arduino Mega and Due. The display works fine and I built a simple project with it. It is a temperature monitor and a real time clock. As you can see at the top, we can see the current date and time, we can see the temperature right now, and at the bottom the Arduino records the minimum and the maximum temperature that it has measured. I also tried to design a basic user interface just with simple shapes. As you can see everything works fine, and it is a very easy and useful project to build. Let’s see how to do it!

Real time clock and temperature monitor with a DS3231 and a Color TFT – [Link]

Flexible haptic actuators designed for wearable devices


Graham Prophet on talks about a new cooperation between Kemet and Novasentis aim to develop the next generation of haptic actuators that acts as a second skin for devices.

Kemet and Novasentis, developer of haptic and sensory feedback technology for wearable devices, have announced a collaboration to develop next generation Electro-Mechanical Polymer (EMP) film based haptic actuators for wearable devices. Novasentis will provide the core technology and haptic actuator film whereas Kemet will develop the manufacturing process for the final assembly.

Flexible haptic actuators designed for wearable devices – [Link]

Aeroscope – a wireless oscilloscope


A pair of former engineers from Agilent Technologies are working on a wireless oscilloscope that will connect to an iOS device for its user interface:

The Aeroscope will be a one-channel device where the electronics are in a “pen” form factor. An SMA connector will let you attach mini-grabbers or other probe tips. Analog bandwidth is 100 MHz with 500 Msamples/s sample rate. It should store 10 ksamples of waveform data.

Aeroscope – a wireless oscilloscope – [Link]

Getting Started with Micro Python

MicroPython Figure 3

Jacob Beningo has published a tutorial on how to start with Micro Python to build real-time embedded applications.

The first step a developer interested in Micro Python must take before diving into a real-time embedded application is to select a supported development kit or microprocessor. The best place for a developer look for a supported development kit is to check-out the Micro Python Github Board Summary page.

Getting Started with Micro Python – [Link]

IoT HAT for Raspberry Pi: A must-have for Pi Zero


A Wi-Fi 802.11n + Bluetooth 4.1 (Dual Mode) add-on board for any Pi model with the 40 pins GPIO connector including Pi 2, A+ and B+

It is an add-on board that provides Wi-Fi and Bluetooth connectivity for the Raspberry Pi.

You can use Wi-Fi and Bluetooth USB dongles, however …….

IoT HAT is more affordable

IoT HAT for Raspberry Pi: A must-have for Pi Zero – [Link]

Linear Bench Power Supply


Matt Godfrey published his linear lab power supply which has adjustable voltage and current limit. Specs: 0-30V, 0-2A, separate 5V output, display of setpoint and output current and voltage:

This project is a simple linear bench power supply with adjustable voltage and current. It is meant to be a learning experience, putting ideas of circuit design, feedback, stability into practice building a complete practical power supply. I have intentionally avoided using a 3 terminal regulator or purpose built chip and instead implemented the feedback for voltage and current using a couple of opamps. The idea is for this to be a practical final product while giving practice implementing some basic circuits.

Linear Bench Power Supply – [Link]

Half Bridge Driver based on IR2104


This Half-bridge driver based on IR2104 gate driver IC and N channel Dpak MOSFET , The IR2104 is a high voltage, high speed power MOSFET driver with independent high and low side referenced output channels. HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard COMOS or LSTTL output, down to 3.3V logic. A gate IR2104 driver is a power amplifier that accepts a low-power input from a controller IC and produces a high-current drive input for the gate of a high-power transistor such as a power MOSFET. In essence, a gate driver consists of a level shifter in combination with an amplifier.

This drive has many application, ranging from DC-DC power supply for high power density and efficiency, This project simplifies the design of control systems for a wide range of motor applications such as home appliances, industrial drives, DC brushed motors , Brushless motors, fans, Tesla Coil driver, Induction coil driver, LED driver, Halogen Lamp driver.


  • Load Supply 12 to 36V DC
  • Load Current 10Amps (Peak 20Amps)
  • Logic Supply 12 To 15V DC
  • Input Signals 3.3V to 15V
  • SMD based tiny design
  • Required Single PWM input
  • Shutdown Input
  • Screw Terminals for Load and Load Supply
  • Header Connector for Logic supply and inputs

Half Bridge Driver based on IR2104 – [Link]