Arduino and RX5808 module spectrum analyzer


garagedrone @ build a 5.8GHz spectrum analyzer using Arduino nano and BOSCAM rx5808 receiver module which is very popular on FPV RX (receiver) builder scene:

At the price of 9 dollars the BOSCAM rx5808 receiver module is very popular in the FPV RX (receiver) builder scene. By default it supports only 8 channels with dip switch. But by using it with SPI interface and Arduino with rx5808-pro open source setup it becomes a comfortable deluxe RX with nice autoscan and a spectrum anlyser.

Arduino and RX5808 module spectrum analyzer – [Link]

Remote WiFi DHT11 Temperature an Humidity Display


BoianM @ shows us how to build a remote temperature and humidity display using DHT11 sensor and two ESP8266 modules. To program the ESP8266 modules a visual programming software is used.

The advantage of the ESP8266 over Arduino and other controllers is the builtin Wi-Fi. In this Instructable I will show you how with the help of Visuino you can use two ESP8266 modules to make a remote LCD Display for Temperature and Humidity DHT11 sensor.

Remote WiFi DHT11 Temperature an Humidity Display – [Link]

A beginner’s guide to Arduino


tttapa @ has posted a detailed introduction to Arduino, mainly focused on beginners. It starts from the basic concepts of electronics and goes through different Arduino examples such as LED blink to stepper motor drive.

After some years of experimenting with Arduino, I decided that the time has come to share the knowledge I’ve acquired. So I here it goes, a guide to Arduino, with the bare basics for beginners and some more advanced explanations for people who are somewhat more familiar with electronics.

A beginner’s guide to Arduino – [Link]

Raspberry Pi Clever airplane tracker


Jeremy B. Merrill lives near the LaGuardia airport and a lot of planes fly over his house all day long, so he decided to build a LED display showing the departure airport of the airplane that’s flying overhead. For that reason he used a Raspberry Pi, a Software-Defined Radio antenna and open source software that collects and decodes special airplane data, such as location, altitude, registration number etc.

Passenger jets reportedly collect one terabyte of data about themselves per flight. Of that terabyte, most airliners broadcast a tiny portion, unecrypted, over the air, via radio systems called ADS-B and Mode S. Every few seconds, they announce their location, altitude, registration number and – usually – the flight number.

Dump1090 is a program that listens to those broadcasts. Its web interface shows each plane’s precise location and path. I can pick up just about any plane within line of sight of my north-facing window in Prospect Heights. I can “see” planes well into Connecticut or Rockland County, but if the plane shows up even over Prospect Park, I often can’t detect it.

Raspberry Pi Clever airplane tracker – [Link]

How to burn an Arduino UNO bootloader to a new ATMEGA328P-AU chip

This video shows the steps to burn the bootloader from an Arduino UNO, to a new ATMEGA328P-AU chip. The new chips are the TQFP 32 type package.

How to burn an Arduino UNO bootloader to a new ATMEGA328P-AU chip – [Link]

LTC3106 – 300mA Low Voltage Buck-Boost Converter with PowerPath


Linear Technology announces the LTC3106, a highly integrated, 1.6µA quiescent current 300mV start-up buck-boost DC/DC converter with PowerPath™ management, optimized for multisource, low power systems. The LTC3106 is ideal for powering low power wireless sensors from rechargeable or primary batteries supplemented by energy harvesting. The LTC3106 incorporates maximum power point control (MPPC) making it compatible with common high impedance power sources, including photovoltaic cells, thermoelectric generators (TEGs) and fuel cells.

LTC3106 – 300mA Low Voltage Buck-Boost Converter with PowerPath – [Link]

Arduino TFT Forecast Weather Station with ESP8266


tufantas @ has build a weather forecast display using  Arduino Mega 2560, 7″ inch TFT display and ESP8266 Wifi module. The display shows 3 days weather forecast, Current weather conditions, Current wind directions & speed with analog gauge meter, Indoor temperature and NTP time.

Arduino TFT Forecast Weather Station with ESP8266 – [Link]

Maker’s rule, the feature packed PCB multi-tool


Rohit Gupta @ has designed a new version of his maker’s rule that is compact and packs many features like a LED tester and continuity tester:

It has been a while since i posted my Tinker Rule which i made during college days. I received a few requests for the ready to etch pdf which helped me gauge if this seemed to be useful to people. The response was somewhat positive and so, i decided to put in some extra effort and make it handy, portable and manufacturable !

Maker’s rule, the feature packed PCB multi-tool – [Link]


DC Output Solid State Relay


DC Output Solid State Relay 10Amps 60V DC (Optically Isolated Input)

This project has been designed around TLP250/352 which is Opto-Coupler IGBT/MOSFET Gate Driver from Toshiba and Mosfet IRFP260 from IR, This relay consists of optically isolated gate driver and low impedance Mosfet. The combination of low resistance and high load current handling capabilities make this Relay suitable for a variety of switching applications. These devices are ideally suited for controlling high voltage and current DC loads with solid state reliability while providing 3750V isolation from input to output.

A solid-state relay (SSR) is an electronic switching device that switches on or off when a small external voltage is applied across its control terminals. SSRs consist of a Opto-isolator which responds to an appropriate input (control signal), a solid-state electronic switching device which switches power to the load circuitry, and a coupling mechanism to enable the control signal to activate this switch without mechanical parts. This relay designed to switch DC Load up to 10Amps. It serves the same function as an electromechanical relay, but has no moving parts. Solid-state relays have fast switching speeds compared with electromechanical relays, and have no physical contacts to wear out. Input trigger voltage 3V to 9V DC (1.5V to 12 V with Transistor) and output load 10Amps and supply 12V to 60V DC (100V DC also Possible). Gate Driver required supply 12V to 18V DC. Heat sink required for peak load.

DC Output Solid State Relay – [Link]


Photoplethysmography – IR Heart Rate Monitor


SteveQuinn @ show us how to create a heart rate monitor using an IR phototransistor and Arduino and display the data on a TFT screen.

This Instructable documents how to create a simple heart rate monitor using Photoplethysmography with an IR phototransistor via transmissive absorption using the Arduino to process the pulsatile data and display live results via a TFT screen.

To use the source code and create the necessary circuitry you will need a reasonable grasp of electronics, knowledge of the Arduino, a DMM and some patience.

Photoplethysmography – IR Heart Rate Monitor – [Link]