4 Digit Presettable LED Down Counter 4 Digit Presettable LED Down Counter
Presettable start count. Transistor output - 4 modes. Suitable for low to high speed applications - 30 to 4100cps. Accepts 'make' inputs. Debounce and reset. 9 - 15Vdc... Electronics > Circuit Boards & Components > Printed Circuit Boards > Development Boards 3154KT 3154KT 3154KT 23.95 Quasar Electronics Limited
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4 Digit Presettable LED Down Counter

AS3154KT - 4 Digit Presettable LED Down Counter
Ability Level 2: ModeratePre-Assembled and Kit versions available
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Low cost micro-controller based 4 digit presettable LED down counter with four operating modes that control how the output behaves when count reaches zero. Suitable for low to high speed applications (30 to 4100cps). Ideal for process control and counting applications.

Accepts inputs from any make contact so can be used with switches, relay contacts, open collectors outputs or push buttons.

Two onboard push buttons (SET and INC) are used to set the operating mode and starting count.

Inputs for Count, Rate (debounce) and Reset (to preset value). Output is an open collector transistor (NPN, 100mA @30V). This can be used to trigger, for example, our 3156 relay board or the 3141 delay timer board.

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 for easy connection. The board has Power-In reverse polarity protection.

Specifications
Supply9...15Vdc
e.g. Order Code 660.446UK with connector 777.001UK
Current20 - 50mA max.
Operating modesCount Stop, Output Hold
Over-Count, Output Hold
Auto-Reset, One-Shot Output
Over-Count, One-Shot Output
Count range0000 to 9999 (10,000 max)
Count speed
(selectable)
Low: 30 cps (15mS high, 15mS low)
High: 30,000 cps (measured)
InputsReset / Count / Rate
Input triggermake contact e.g. switches, relays, open collector outputs or simply push buttons
Output TypeOpen Collector Transistor, NPN, 100mA @ 30V
(see Help Sheet)
Display4-digit 7-segment with decimal point, 14mm RED LED
Board Dimensions51x64mm
Connections10 pin SIL header
Product FormatsSELF-ASSEMBLY Electronic Kit (KT) or
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
DocumentationUser Manual
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AS3154KT - 4 Digit Presettable LED Down Counter Selection

SELF-ASSEMBLY 4 Digit Pre-Settable LED Down Counter Electronic KIT
Quasar 3154KT - SELF-ASSEMBLY 4 Digit Pre-Settable LED Down Counter Electronic KIT
£16.63 £12.46 Exc VAT, £14.95 Inc VAT | In Stock (Our UK Warehouse).
PRE-ASSEMBLED 4 Digit Pre-Settable LED Down Counter Module
Quasar AS3154 - PRE-ASSEMBLED 4 Digit Pre-Settable LED Down Counter Module
£24.96 £16.63 Exc VAT, £19.96 Inc VAT | In Stock (Our UK Warehouse).

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