13 knock sensor module and a digital interface, built-in LED build a simple circuit to produce percussion flasher. 13 Interface comes with digital LED, will knock sensor connected digital 3 interface, when percussion sensor senses Measure To percussive signals, LED flashing light.
This switch is OFF in the resting state, when the external force to touch and to achieve a proper vibration, meet the appropriate speed or from the (partial) heart, conductive pin will momentarily conduction (ON) status, make changes in electric property, and disappear when the external force electric property open (OFF) state is restored
1. Can be used to test signals receiving from VHF/UHF band
2. The receiving signal strength which received from VHF/UHF is not the best. It can be used to receive the nearby signals (eg. FM broadcasting radio or other Hand-held radios). To achieve the best effect, you need to connect associated antennas Cannot be used to receive HF signal band
3. To achieve the best effect, you need to connect associated HF antennas such as Long Wire , Random Wire, Dipole etc.
Functions:
Fully assembled and ready to use
Uses RTL2832U+R820T chip set
100KHz to 1766MHz, operating frequency
Covers all HF amateur bands
Covers VHF & UHF bands from 24-1766MHz
Up to 3.2 M Sample rate. (~2.8 MHz stable)
Receiver modes AM, NFM, FM, DSB, USB, LSB and CW
Note: depends upon the SDR software used with the receiver
8-bit ADC giving ~50 dB dynamic range
50 Ohm input impedance
Double SMA golden antenna connectors
Diode protection on RF input
Aluminum panels
LED power and band indication
40MHz local oscillator for HF conversion
DBM balance ring mixer
Small size board
Free software
Independent antenna inputs for Shortwave and VHF
USB computer connection ( mini usb) Powered by common USB
Very High dynamic range receiver
SPDT High Power UltraCMOS RF Switch
Accurate and efficient band filters
Very clean audio reception
All specifications subject to change without notice
Female SMA for both input and output for a wide array of connectivity options
In-line SMA connectors. Much easier to connect and manipulate than side-by-side SMA connectors
Antenna protection on RF input; in-circuit in both enable and passthrough mode
Solely high-quality components used in the RF signal path
Powered by common USB-B USB for a multitude of power options
RF-suitable power supply regulation (TPS79333)
PTC fuse on USB power input to protect your upconverter from short circuits
Upconverter enable/passthrough toggle switch--less fiddling with small, delicate cables and connectors
Socketed oscillator for a simple upgrade path
Stable 25ppm oscillator included
LO disabled in passthrough mode
High-quality 2-layer PCB with ENIG finish
Fully assembled and ready to use
Designed to fit standard off-the-shelf Hammond enclosures
2 mounting holes for standard PC screws
Designed and manufacturered in conjunction with Opendous Inc., an excellent open-hardware design company
Full project documentation--schematics, PCB design files, assembly information--is freely available (see link above). DIY'ers rejoice! We will have a limited number of bare PCBs available for those who want to 'roll their own'
A portion of the proceeds from your purchase will be used to support this and other open-hardware, open-source initiatives
Operation:
Before operating your unit for the first time, and every time you run with a new SDR, we recommend running the tuning procedure located here. It is not a mandatory procedure but may help fine-tune your, erm. tuning. Pop the included oscillator into its socket and you are ready to go!
Operating the unit is very simple:
Connect your antenna to the RF input
Connect your SDR to the IF output
Ensure your toggle switch is in the enable position
Plug your USB power source into the USB-B USB jack
Fire up your favorite SDR software. Tune to 125MHz (+/- the tuning offset from the tuning procedure) + your desired frequency and enjoy!
* Specs Actuation force as low as 0.1N and sensitivity range to 10N. Easily customizable to a wide range of sizes Highly repeatable force reading; as low as 2% of initial reading with repeatable actuation system Cost effective Ultra thin; 0.45mm Robust; up to 10 million actuations Simple and easy to integrate
* Contents - Connect Right ----- 5V Left ----- P10K ---- GND A0
- Key Code int fsrAnalogPin = A0; // FSR pin Analog 0 int fsrValue; fsrValue= analogRead(fsrAnalogPin); float voltage = fsrValue* (5.0 / 1023.0); lcd.print("Volt=" + (String)voltage + " ");
the switch using metal manufacturing, electrical characteristics and mercury switches are similar but not the risk of mercury switches and environmental issues, while shaking unidirectional conducting the same characteristics, the assembly of the use of more convenient and safe;
Operating Characteristics: Switch in the stationary state, as shown in Figure (ON) side below the level of 15 degrees, the switch is in the ON state; when (OFF) side below the level of 15 degrees, the switch is in the OFF state; when achieved by external shaking shaking force, or set the conduction angle, the conductive pin electrical characteristics will produce short or continuous conduction.
when the electrical characteristics of the open state to be restored (OFF) when the switch is set to the environment must be static, and the (OFF) is set to be lower than the level of the open end angle;
the switch all materials are manufactured using environmentally friendly raw materials, in line with ROHS requirements;
when the switch below the horizontal angle of 15 degrees, shaking hard trigger conduction;
the trigger switch for low current circuit, does not apply when the power switch;
this switch is a sealed package, dustproof and waterproof.
The switch is lacoste type better than the single bead type conduction effect
* Specs The ML8511 breakout is an easy to use ultraviolet light sensor. The MP8511 UV (ultraviolet) Sensor works by outputing an analog signal in relation to the amount of UV light that's detected. This breakout can be very handy in creating devices that warn the user of sunburn or detect the UV index as it relates to weather conditions. This sensor detects 280-390nm light most effectively. This is categorized as part of the UVB (burning rays) spectrum and most of the UVA (tanning rays) spectrum. It outputs a analog voltage that is linearly related to the measured UV intensity (mW/cm2). If your microcontroller can do an analog to digital signal conversion then you can detect the level of UV!
* Contents - Connect VIN ----- X 3V3 ----- 3.3V GND ----- GND OUT ----- A0 EN ----- A1
- Key Code int UVOUT = A0; //Output from the sensor int REF_3V3 = A1; //3.3V power on the Arduino board
int uvLevel = averageAnalogRead(UVOUT); int refLevel = averageAnalogRead(REF_3V3);
//Use the 3.3V power pin as a reference to get a very accurate output value from sensor float outputVoltage = 3.3 / refLevel * uvLevel; float uvIntensity = mapfloat(outputVoltage, 0.99, 2.9, 0.0, 15.0);
* Specs To turn on or off the light in day and night without manual operation Do not install the control unit in a place extremely darker in daytime or a place directly by lighting of turning - ON lamp Widely used: street light, highway, factories, garden, ports, airports, farm, parks, schools, and other places. Also can fit into solar lamps and lanterns, or cars, motorcycles, electric cars and other power supply voltage is 220V lamps and lanterns or equipment Easy to install and Convenient to use Model:AS-10-220 Input Voltage: DC or AC 220V Max Load Current: 10A Size:(approx)5 x 4.2 x3.5cm/1.96"x1.65"x1.37" Frequency:50-60Hz
* Specs Model: GY-302 Chip: BH1750FVI Power supply :3-5V Data output range resembles luminance from 0-65535 lux I2C Interface No external parts required Dimensions: 13.9mm X 18.5mm
* Specs Photoresistors are semiconductor photosensitive devices, in addition to having high sensitivity, fast response, consistent with the spectral characteristics and value of good features, but at a high temperature, and humidity in harsh environments, but also to maintain a high degree of stability and reliability, wide pan used cameras, solar garden lights, lawn, detectors, clock, music, cups, gift boxes, mini-Night light, light voice switches, lights automatically switch toys and a variety of light control, light control lighting, lamps and other light automatic opening OFF control field
* Contents - Connect S - A1 middle - 5V - GND
- Key Code #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27,20,4); // LCD2004 int sensorPin1 = A0; int sensorPin2 = A1; //S002 void setup() { lcd.init(); // initialize the lcd lcd.backlight(); lcd.print("start LCD2004"); } void loop() { int rate1 = analogRead(sensorPin1); int rate2 = analogRead(sensorPin2);
The DHT22 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.
Simply connect the first pin on the left to 3-5V power, the second pin to your data input pin and the right most pin to ground. Although it uses a single-wire to send data it is not Dallas One Wire compatible! If you want multiple sensors, each one must have its own data pin!
Compared to DHT11,this sensor is more precise, more accurate and works in a bigger range of temperature/humidity, but its larger and more expensive
Comes with a 4.7K - 10K resistor, which you will want to use as a pullup from the data pin to VCC.
Product use: rain, rain sensor, can be used for all kinds of weather monitoring, and translated into output signals and AO.
The sensor USES the high quality FR - 04 double material, large area of 5.5 * 4.0 CM, treatment of nickel plating and surface, have fight oxidation, electrical conductivity, and life has more superior performance;
The comparator output, signal clean, good waveform, driving ability is strong, for more than 15 mA;
With potentiometer sensitivity adjustment
The working voltage of 3.3 V to 5 V
The output format: digital switch output (0 and 1) and analog AO voltage output;
