Pre-Assembled Module or
Self-Assembly Electronic Kit (Soldering Required)
Low cost microcontroller based 4 Digit Pre-settable LED Down Counter with four operating modes that controls how the output behaves when count reaches zero. Can be used for both low (30cps) and high (4100cps) speed applications.
Accepts inputs from any 'make' contact so can be used with pulses from switches, relays, open collectors outputs or simply push buttons.
Two onboard push button switches (SET and INC) are used to preset the starting count and select the operating mode.
Inputs for Count, Rate (debounce) and Reset (to preset value). Output is an open collector transistor (NPN, 100mA @30V). The four operating modes are detailed in the User Manual (see Technical Specifications table below).
Count, Reset, Rate, Output and Power In are brought out to a 10-way header strip for easy connection. The board has Power In reverse polarity protection.Specifications
|Supply||Regulated 12Vdc (Order Code 660.446UK with connector 778.106)|
|Current||20 - 50mA max.|
|Operating modes||Count Stop, Output Hold |
Over-Count, Output Hold
Auto-Reset, One-Shot Output
Over-Count, One-Shot Output
|Count range||0000 to 9999 (10,000 max)|
|Low: 30 cps (15mS high, 15mS low) |
High: 30,000 cps (measured)
|Inputs||Reset / Count / Rate|
|Input trigger||'Make' contact e.g. switches, relays, open collector outputs or simply push buttons|
|Output Type||Open Collector Transistor, NPN, 100mA @ 30V |
(see Help Sheet)
|Display||4-digit 7-segment with decimal point, 14mm RED LED|
|Connections||10 pin SIL header|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) more|