AVR Tutorial: Switch Input and Debounce. Though an input can be from any number of sources, one of the mose common and the easiest to implement, would be a swith.
Due to mechanical properties of a switch, when a switch is closed, there is a period of time in which the electrical connection "bounces" between open and closed. To a microcontroller, this "bouncing" can be interpreted as multiple button pushes. Therefore, we must either build a circuit to supress the "bouncing" or we must do so in our software. This is known as "debouncing a switch". Download the project file: tutorial_3.tar.gz This Tutorial Introduces...
Synchronous counters : Sequential Circuits Counters. We need your help!
This page requires proofreading - If you notice any errors, please post on our forums A synchronous counter, in contrast to an asynchronous counter, is one whose output bits change state simultaneously, with no ripple. The only way we can build such a counter circuit from J-K flip-flops is to connect all the clock inputs together, so that each and every flip-flop receives the exact same clock pulse at the exact same time: Now, the question is, what do we do with the J and K inputs? Monitoring my house power with an Arduino and Perl. Once I'd familiarised myself with the Arduino development kit I wanted to try and use it to monitor my electricity usage.
I know you can buy commercial devices which do this but I wanted more than the current usage; I wanted to log usage over time and I wanted to involve Perl somehow. I saw the Flukso ages ago and even tried to buy one but they were out of stock. I started looking around for current clamps but there is a bewildering number of these and nothing quite seemed to fit the bill. AT90CAN32. Get Started We'll tell you all you need to know to start evaluating and working with this product.
Datasheets AT90CAN32/64/128 Complete ( file size: 5275665 , 428 pages , revision H , updated: 08/2008 ) AT90CAN32/64/128 Summary ( file size: 460488 , 17 pages , revision H , updated: 08/2008 ) More Documents... By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed. Key Parameters Max. 1-Wire remote counters. Picaxe tutorial. Information Sources Picaxe Microcontroller Projects by Ron Hackett Picaxe Manuals 1, 2 & 3 from www.picaxe.co.uk Picaxe Forum Power source The PICAXE microprocessors has a maximum voltage of 5.5v.
My choice was for 3 x AA alkaline batteries giving 4.5v housed in a switched box. Google attēlu meklēšanas rezultāti: Accuracy and precision. Pulse Output Accuracy and Precision Power test Test procedure The pulse counting arduino on the left was tested by sending 12 different pulse rates simultaneously from the pulse generator arduino on the right: Pulse Generation.
Speed Measuring Sensor Module Counter Module Motor Test Module ECT-254254. Note: 1) Estimated delivery time includes processing time and actual shipping time.
Normally our processing will take 1-2 working days. 2) Estimated Delivery Time shown above is only for reference, since actual delivery time depends on shipping service selected, delivery schedule and local customs clearance time, especially during peak periods. 3) Shipping Costs shown include fuel surcharges and may change a bit due to the fluctuation of currency exchange rates.
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9100 GSM & GPRS Module. GSM & GPRS Transmitters can be used to monitor the readings of a water meters, gas meters, energy meters or electric meters by connecting to the pulse output facility of the meter.
The GSM & GPRS Transmitters are ideal for remote installations but readings are required on either hourly, daily, weekly or annual logs; program the transmitter to your specific reading requirements, install and then monitor via GSM to your mobile or GPRS to your PC. Metering Solutions. The GPRS & Walk/Drive By System is a combination of the GPRS & Walk/Drive By systems uses radio frequency transmitters that are link to the required number GPRS transmitters.
The number of GPRS transmitters required would depend on the location and area of the radio transmitters that are attached to each metering device that requires monitoring. The benefits of the additional walk/drive by system is that readings could be taken between the set times programmed on the GPRS transmitter therefore obtaining earlier readings. The GPRS & Walk/Drive By System system would require the following components to complete an active system: IZAR CP R3.5 868 MHz radio module transmitter is compatible with all SAPPEL modular meters, i.e. ALTAIR Water Meter and SHARKY Energy Meter. The IZAR CP radio module is simply clipped onto the meters of the Sappel modular range. Untitled. MULTIFUNCTIONAL UP/DOWN COUNTER. Easy Pulse Sensor: A DIY pulse sensor based on photoplethysmography from Embedded Lab. We recognize our top users by making them a Tindarian.
Tindarians have access to secret & unreleased features. M-PADPULS2 M-Bus Pulse Input Module for 2 Meters (M-PADPULS2) The M-PADPULS series of devices connects meters with contact output to the M-Bus system. This is a simple and flexible solution for reading already installed gas, electricity, heat, water and steam meters. The power for the impulse adaptor is taken from the M-Bus. An integrated battery maintains the count function in case of a bus voltage failure. The capacity of the battery allows operation without M-Bus connection for guaranteed 10 years. Untitled. Pulse InOut Module (DaisyLink) - GHI Electronics. Provides eight additional PWM signals, as well as eight pulse-measuring inputs. These can be used to measure pulses from flow sensors for example, but its main purpose is RC robotics.
The inputs can be used to connect any RC receiver from two to eight channels. The receiver simply generates pulses matching the knob positions. Buy Counter & Hour Meter Accessories Pulse Module HOBUT PULSE-M850 For Use With M850 Series HOBUT PULSE-M850 online from RS for next day delivery. M850 Multifunction Meter The new Hobut DIN 96 x 96mm multifunction panel meter has two options, one featuring a unique blue LED screen which can be seen in direct sunlight and an LCD version with a user selectable option of Green, Blue or White backlighting. Untitled. DS2423 4kbit 1-Wire RAM with Counter. The DS2423 1-Wire® RAM with Counters is a fully static, read/write memory for battery operation in a low-cost, six-lead TSOC, surface-mount package. The memory is organized as 16 pages of 256 bits each. In addition, the device has four counters, two of them with external trigger inputs called A and B.
Untitled. Adaptive Wireless. 12 input pulse counting. Pulse Count Module - GHI Electronics. Event_gpio.c - raspberry-gpio-python - Python library for GPIO access on a Raspberry Pi. PWM for servos, motors, and LEDs plus. See viewtopic.php? P=347830#p347830*************************************************************************************** Pigpio library. Interrup based pulse counting with sleep mode. This sketch detects pulses and prints to serial the character P. In order to reduce the power consumption the Atmega 328 is put into sleep mode in-between pulses. The interrupt pulse input (on digital input pin 2 or 3) is used to wake up the device.