4-digit LED timer with an open collector output comprising a Motherboard and one pre-programmed firmware chip, the 3148T0 Programmable Countdown Timer (1 to 10,000 seconds) that provides 4 operation modes:
The operation of the Motherboard can be changed with 5 other optional pre-programmed firmware chips:
The motherboard requires NO modification to work with any of the firmware chips above. The only change is the software that we program into the microcontroller. All you have to do is remove one firmware and replace it with another.Ordering Information
Please refer to the individual firmware documentation for detailed operational information.
The motherboard has an active low open collector transistor output (NPN 100mA, 30V max.). This can be used with to drive our 3156 relay boards or the 3141 delay timer board. Please refer to individual firmware documentation for details of how the output behaves.
Connections: DC IN, RESET, OUTPUT, STOP and START are brought out to a 10-way header strip for easy connection.
START and STOP buttons are provided on the board for easy setting-up.Specifications
|Supply||9...15V dc |
e.g. Order Code 660.446UK with connector 777.001UK
|Current||30 - 50mA max.|
|Inputs||Start / Stop / Reset (Active low - see documentation)|
|Output Type||Open collector NPN transistor, 100mA @ 30V max|
(see Help Sheet)
|Display||4-digit 7-segment with decimal point, 14mm RED LED|
|Accuracy||+/- 1.8 seconds / hour|
|Board Dimensions||~ 51 x 66 x 12 mm (excluding header pins)|
|Connections||10 pin SIL header|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) or|
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
|Documentation||3148 Motherboard (and 3148T0 Firmware)|
Download All 3148 User Manuals