3148 - 4-Digit Timer Board (6 optional functions)
This
4-digit LED timer comprises a Motherboard and one pre-programmed firmware
chip, the
3148T0 Programmable Down Timer (1 to 10,000 seconds).
The Motherboard can also be used with 5 other pre-programmed firmware
chips, 3148T1 to 3148T5 as described below.
The
motherboard does NOT require any modification to accept any of the alternative
firmware chips. 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.
You can purchase the pre-programmed add-on firmware individually or as
5-piece pack containing all the other firmware chips listed below. Click
on the link to view the product documentation.
-
3148T1 - Simple Photographic Timer (6-900Sec)
-
3148T2 - Stopwatch with Pause (99H59M59.59S)
-
3148T3 - 40KHz Auto Ranging Frequency Meter
-
3148T4 - Programmable Down Timer (1-10,000 MINUTES)
-
3148T5 - Programmable Down Timer (1-10,000 HOURS)
Output to transistor (NPN, 100mA @ 30V). 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.
| Technical Specifications |
| Supply |
9-12V dc (Order Code PSU445 with
connector
778.106) |
| Current |
30 - 50mA max. |
| Inputs |
Start / Stop / Reset (Active low - see documentation) |
| Output |
Open collector NPN transistor, 100mA @ 30V |
| Display |
4-digit 7-segment with decimal point, 14mm RED LED |
| Board Dimensions |
51x66mm |
| Connections |
10 pin SIL header |
| Product Format |
Kit Form (KT
 )
or Assembled (AS)
more |
| Documentation |
User
Manual (including 3148T0) |
