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Welcome to ALT Electronics store

Welcome to Altelectronics

We hope you'll find some interesting products we designed and manufactured for people like us. All our products have schematics and example programs, and we hope to hear from you guys about how you are using our products. We are trying to reply to questions from our customers when time permits and well give advices if you are stuck with your projects.

Happy Buying! 



New product:


LoRa 868MHz Arduino Shield Alvailable for ordering now

FSK Shield based on RF95 Module with the folowing features

Radio range 15 Km line of sight with a pair of good antennas - testing video coming soon

  • +13 dBm Power Output Capability (max 19dBm)
  • High Sensitivity: down to -139 dBm at 1.2 kbps
  • Lora and FSK modulation
  • Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm,80 dB Blocking Immunity, no Image Frequency response
  • Low current: Rx = 20 mA, 100nA register retention
  • Programmable Pout: 0 to +18 dBm in 1dB steps
  • Constant RF performance over voltage range of module
  • FSK Bit rates up to 100 kb/s
  • Fully integrated synthesizer with a resolution of 61 Hz
  • FSK, Lora modulations
  • Built-in Bit Synchronizer performing Clock Recovery
  • Incoming Sync Word Recognition
  • Automatic RF Sense with ultra-fast AFC
  • Packet engine with CRC

buy now

Price 36 Euro



RF69 FSK Arduino Shield FSK Shield based on RF69 Module with the folowing features
  • +13 dBm Power Output Capability
  • High Sensitivity: down to -120 dBm at 1.2 kbps
  • High Selectivity: 16-tap FIR Channel Filter
  • Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm,80 dB Blocking Immunity, no Image Frequency response
  • Low current: Rx = 16 mA, 100nA register retention
  • Programmable Pout: -18 to +13 dBm in 1dB steps
  • Constant RF performance over voltage range of module
  • FSK Bit rates up to 300 kb/s
  • Fully integrated synthesizer with a resolution of 61 Hz
  • FSK, GFSK, MSK, GMSK and OOK modulations
  • Built-in Bit Synchronizer performing Clock Recovery
  • Incoming Sync Word Recognition
  • 115 dB+ Dynamic Range RSSI
  • Automatic RF Sense with ultra-fast AFC
  • Packet engine with CRC-16, AES-128, 66-byte FIFO
  • Built-in temperature sensor

buy now

Price 28 Euro

SALE 22.99 Euro








Our Stepper motor shield was tested successfully on top of the Galileo Board from Intel - it worked with the same software as for Arduino UNO - please watch the video




Available now, the Arduino IDE Compatible Smart Temperature and Humidity sensor (ASK/OOK modulation) and a ASK/OOK Shield for receiving the data



Wireless Temperature & Humidity Sensor

ASK Temperature & Humidity Sensor with enclosure

buy now

ASK 433.92 Receive Shiled

price:  18.00 EUR

buy now

ASK Temperature & Humidity Sensor with enclosure   35.00 EUR






Arduino Steper Motor Driver -  SALE price 33.99 Eur

This shield is based on L6470 dSpin Motion Controller can drive two 1.5A steppers independant of each other. By stacking 2 shields together it can drive 4 motors. This sheld requres an external power supply of 12V DC or 24V DC (depending on the motors)

Main applications are robotics, small CNCs, 3D printers and many others. This shield is compatible with Arduino UNO, and is using the SPI interface for comunication. Two more IO s are used to signal the Error Flag and Busy Flag to the CPU.  When stacking two shields together the humpers on the shield have to be set to accomodate this scenario.  The shieds is not taking any power from the Arduino UNO board by having his own 5V regulator fitted on the PCB. A functional arduino (V1.0) example project is available for download which demonstrates most of the features of the driver. Stepper motors will be on sale for this shield soon.


buy now




Arduino FSK Transceiver 433.92 MHz Shield

The RF Transceiver Shield is an Arduino-compatible expansion board (“shield”) that gives your Arduino the ability to both receive and transmitt radio signals transmitted on the unlicensed bands of 315, 433, 868 and 915 MHz bands using FSK (Frequency Shift Keying), ASK (Amplitude Shift Keying) or OOK (On-Off Keying) modulation.

ASK signals at 433MHz are very commonly used by consumer electronics devices including weather stations, power consumption meters, security systems, and home automation controllers.The RF transceiver used is RF12 from Hope Electronics, this means that the shield is using SPI.
The advantages of SPI are that it runs at a higher data rate, and it has separate input and output connections, so it can send and receive at the same time. It uses one additional line per device to select the active device, so more connections are required if you have many devices to connect. Most Arduino projects use SPI devices for high data rate applications such as Ethernet and memory cards, with just a single device attached.
Arduino releases (from release 0019) include a library that allows communication with SPI devices. SPI has separate input (labeled “MOSI”) and output (labeled “MISO”) lines.

Schematics available

Product Code ARD-RF433-SHL




buy now




Wireless FSK Temperature and Humidity sensor

This temperature and humidity sensor is compatible with our  Arduino RF 433.92 MHz Shield  and USB RF 433.92 MHz Transceiver module . The sensor is using the SHT11 sensor from Sensirion. and is powered from 2 AA alkaline batteries with a life span of min 6 months and maximum of 18 months based on a 2.5 min transmitting cycle.

This sensor comes with Aduino 1.0 demo sketch, and is pre-programmed to send temperature and humidity measurements every 4 seconds. The sensor can be purchased with ABS eclosure, or just the PCB (fully tested) and will be delivered in two versions, with integrated pcb antenna, or external antenna for extended range. The sensor can be programmed via programing cable (ISP connector) 


*Sensor in the picture is with integrated pcb antenna.


            Price 35 Euro



USB FSK 433.92 MHz Transceiver module (Arduino Compatible)

This product can be programmed from the Arduino IDE, a number of examples are available for download, please read below.

price 32 Euro


The main purpose of this transceiver is for prototyping an application with 433Mhz FSK radio link, for building robots , telemetry systems, home automation and more.

Manufacturer: Adaptive Design ltd. 
Manufacturer Part No: ARD-FSK433-USB
Produnct Datasheet :
Support Page :

Main Features
  • Arduino IDE compatible
  • Based on RF12B radio chip
  • 6dbm (4mW) output power
  • Arduino Software Libraries available
  • ATmega328P micro controller
  • Programmable from Arduino IDE over the serial port (no programming cable required)
  • Software Examples available for download
  • Operating Frequency 433 MHz with Crystal PLL
  • The transceiver can be used on 868MHz and 915MHz with reduced performance* for more information please check the RF12B Data sheet
  • No software drivers required
  • No power supply required is powerd from the USB port
  • Compatible with other Adaptive Design products such as sensors and Arduino Shields
  • Compliant with ETSI regulation for 433MHz band no license required





 DDS - Direct Digital Syntesizer


The AD9851 is a highly integrated device that uses advanced DDS technology, coupled with an internal high-speed, high performance D/A converter, and comparator, to form a digitally-programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, the AD9851 generates a stable frequency and phase-programmable digitized analog output sinewave. This sinewave can be used directly as a frequency source, or internally converted to a square wave for agile-clock generator applications.

  • 180 MHz Clock Rate with Selectable 6x Reference Clock Multiplier
  • On-Chip High Performance 10-Bit DAC and High Speed Comparator with Hysteresis
  • SFDR >43 dB @ 70 MHz AOUT
  • 32-Bit Frequency Tuning Word
  • Simplified Control Interface: Parallel or Serial Asynchronous Loading Format
  • 5-Bit Phase Modulation and Offset Capability
  • Comparator Jitter <80 ps p-p @ 20 MHz 
  • The module can be driven from Arduino UNO with a simple program over the SPI bus, and can become a useful programable signal generator in your electronic lab
  • Datasheet for the AD8951 can be found here


  Price 18 Euro 

FREE shipping on all the orders of 50 Euro and above!


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