RF Explorer 433M Handheld Digital Spectrum Analyzer

RF Explorer is a handheld digital spectrum analyzer, aimed to provide a very affordable tool for work in all ISM popular frequency bands. It is based on a highly integrated frequency synthesizer which offers high performance, compact size, low consumption and low-cost.

 

It has been designed to be used equally well outdoor and indoor, and can be connected to a Windows PC using standard mini-USB for additional features and higher display resolution.

For more information about it, plz click: 

http://www.icstation.com/explorer-433m-handheld-digital-spectrum-analyzer-p-7017.html

Feature

• Pocket size and light weight
• Solid aluminum metal case
• Spectrum Analyzer mode with Peak Max and Hold, Normal, Overwrite and Averaging modes
• Integrated RF Signal Generator
• Lifetime free firmware upgrades available, open to community requested features
• High capacity Lipo for 16hs+ of continuous run, rechargeable by USB
• Windows PC client Open Source
• Can be extended with internal Expansion Modules for additional band and functionality

 

Specification

• Frequency band:430-440 MHz
• Frequency span: 112 KHz-10 MHz(enhanced to 30 MHz if an Expansion Module is connected)
• Graphics LCD 128x64 pixels, great visibility outdoors
• PC Windows client supports Windows XP/Vista/Win7 both 32 and 64bits
• Backlight for great indoor visibility
• Standard SMA 50 ohms connector, a matching antenna is included
• Amplitude resolution: 0.5dBm
• Dynamic range: -115dBm to 0dBm
• Absolute Max input power: +5dBm
• Average noise level (typical): -110dBm
• RF Generator amplitude: 0dBm to 20dBm
• Frequency stability and accuracy (typical): +-10ppm
• Amplitude stability and accuracy (typical): +-3dBm
• Frequency resolution: 1Khz
• Resolution bandwidth (RBW): automatic 2.6Khz to 80Khz
• Weight: 185g
• Size: 113x70x25 mm

555 Test Bed / Component tester / Cap dump

NE555 Duty Cycle And Frequency Adjustable Module Square Wave

Module Scope
1. Used as a square wave signal generator produces a square wave signal for the experimental development use. 
2. Used to generate the square wave signal to drive a stepper motor drive. 
3. Produce adjustable pulse for the MCU to use. 
4. Generating adjustable pulse to control the associated circuits. 

A brief description
1. Size: 3.5CM * 3.6CM 
2. The main chip: NE555; 
3. Input voltage: 5V-15VDC. 5V power supply, the output current can about 15MA; 12V power supply, the output current can be so 35MA; 
4. Input Current: ≥ 100MA 
5. Output amplitude: 4.2V V-PP to 11.4V V-PP (depending on the input voltage, the output amplitude is not the same) 
6. Maximum output current: ≥ 15MA (5V power supply, V-PP greater than 50%), ≥ 35MA (12V power supply, V-PP greater than 50%) 

Advantages
1. Output with LED indication, there is no output LED quantity (low straightforward, high level LED off relatively low frequency LED flashes); 
2. Output frequency range grade optional continuously adjustable output frequency; 
Low-frequency stall: 1Hz ~ 50Hz 
IF stall: 50Hz ~ 1kHz 
In the high-frequency stall: 1KHz ~ 10kHz 
High-frequency stall: 10kHz ~ 200kHz 
3. the output duty cycle can fine-tune the duty cycle and frequency is not adjustable separately adjust the duty cycle will change the frequency 
4. the output frequency is adjustable; 
Cycle T = 0.7*(Ra + 2*Rb)*C 
Ra, Rb:0-10K adjustable; 
LF gear C = 0.001UF; 
IF file C = 0.1UF; 
In the high-frequency file C = 1UF;, 
High-frequency gear C = 100UF, the waveform frequency buyers can own calculations. 



For the information: 

http://www.icstation.com/ne555-duty-cycle-frequency-adjustable-module-square-wave-p-2224.html

DIY Steps of ICStation Lilypad PCB Circuit Board Compatible Arduino.

DIY steps of ICStation Lilypad PCB circuit board compatible Arduino.



You need to prepare following components:

ICStation PCB Board Lilypad PCB Circuit Board Compatible Arduino:

http://www.icstation.com/product_info.php?products_id=3634

NOTE:This is just a PCB circuit board.User should search and weld electronic component by yourself!!!!

The LilyPad Arduino is a microcontroller board designed for wearables and e-textiles. 
It can be sewn to fabric and similarly mounted power supplies, sensors and actuators with conductive thread. The board is based on the ATmega168V (the low-power version of the ATmega168) (datasheet) or the ATmega328V (datasheet).

Follow us to DIY your own Lilypad!

LCR-T4 Resistor/Capacitor/Diode/SCR/Inductance/Transistor/MOS Tester

 

 

Specification:

Range:

Resistor: 0.1ω-50Mω

Capacitor: 25pF-100000uF

Inductance: 0.01mH - 20H

Working power: DV-9V

Standby current: 0.02uA

Operating current: 25mA

 

Function

1. Add boot voltage detection function

2. Automatic detection of NPN and PNP transistors, N -channel and P-channel MOSFET, diodes (including dual diode), thyristors, transistors, resistors and capacitors and other components,

3. Automatic test out the pin element and displayed on the LCD

4. Can be detected to determine the transistor emitter forward bias voltage of the transistor, MOSFET protection diode and the amplification factor of the base

5. Measure the gate threshold voltage and gate capacitance of the MOSFET

6. 1602 lcd display uses LCD (12864 LCD with backlight)

7. High test speed, valid component test: 2 seconds (except in the larger capacitor of large capacitance measurement also takes a long time, the measured time of one minute is normal)

8. One button operation, power-on test, get a key.

9. Power consumption off mode: less than 20 nA of

10. Auto power off function to avoid unnecessary waste, saving battery power, improved battery life.

61. Projekt Robot - sterowanie bluetooth

introducing tomy

The Modular Bench Power System #9 - More on Displays and an Arduino UNO ...