This is one of the best sellers of BuildCircuit. We have sold more than 5000 copies in 50 countries. It is an excellent kit for beginners.
It is a 3 digits digital object counter do-it-yourself (DIY) kit designed for hobbyists. It is the upgraded version of 2 digit digital object counter.
You can use this 3 digits digital object counter for counting objects or people entering a room. It can be used by engineers for learning about digital counters. Since it's a DIY kit, it can only be used for learning basic electronics. I don't think it is good for industrial use, if you can use it, that would be great.
This DIY digital object counter works with TSOP4838 infrared receiver and there are three seven-segment displays displaying numbers from 0 to 999. An IR transmitter is directed towards the TSOP4838 infrared receiver of the counter module and objects are moved between the two modules. Each time an object passes between the two modules, the seven-segment displays show increment in numbers from 0 to 999.
It comes as a pack of parts kit and is easily assembled if you can follow the silkscreen indicators(labels) and have beginning experience with a soldering iron. You will need to read the resistor bands or use a multimeter to determine the resistor sizes.
Both the kits operate with 9V batteries.
The distance between the transmitter and receiver modules can be around 1 meter.
The counter module can be reset to 0 at any time and restart the counting.
The counter module can be operated with any kind of remote control. Therefore, it can also be used as a remote tester. For each press on the remote control, there is an increment in number.
Kit package contains components for counter and IR transmitter modules:
A. Components for counter module
3 x CD4026 Decade counter
3 x 16-pin IC socket.
3 x common cathode seven segment display-(Can be in red, yellow and blue colors)
1 x TO-92 5V Voltage Regulator(78L05)
1 x TSOP4838 Infrared sensor
1 x 100uF Capacitor- (Voltage rating can be between 16V to 50V- causes no problem in operation)
2 x 0.1uF 50V ceramic Capacitor
2 x 3mm LED- (can be any color)
1 x BC547
1 x BC557
1 x SPDT Slide Switch
1 x Tactile reset switch
1 x Screw terminal- (can be in blue/green colors)
4 x 1K Ohm Resistor 1/4W
1 x 330R Resistor 1/4W
1 x 10K Ohm Resistor 1/4W
1 x Bare PCB with Silkscreen Indicators
1 x 9V battery connector
We may send 4 color or 5 color code resistors.
B. Components for IR transmitter module (altogether 12 components)