Advanced UP/DOWN counter K8035 ILLUSTRATED ASSEMBLY MANUAL H8035IP-1 Total solder points: 271 Difficulty level: beginner 1  2  3  4  5  adv

10 When all connections are made, the four LED displays will light up and the Kit number will appear “8 0 3 5” after which following messages appear :

11 Counting pulses can be applied to the unit in two different ways : 1. + 3V to 12V pulses with respect to ground. 2. Use the + 5V connection for

12 1. COUNTER SETTINGS FUNCTION DIP SWITCH OFF ON Decade counter 1 Modulo 60 : hh:mm (23.59) 2 1 Modulo 60 : mm:ss. (59.59) 1 & 2 2. DE

13 PCB 20. PCB

14 21. Schematic diagram. Schematic diagram DY1a14b13c11d5e4f2g1DP10A3A12DY4SA39-11EWAR1...R8: 150 +5VDY4DY3DY2DY1ABCDEFT1BC557T2BC557T3BC557BC557R

15 GNDX1 4.194304 MHzC118pC218pC3100nGNDD11N4007C8470µGNDGNDC4100nC5100nGND GNDGNDC910µGNDVDD12348765SW5SW DIP-4D4 D5 D6D3R1310KVDD4x 1N4148T6BC547R18

Modifications and typographical errors reserved © Velleman Components nv. H8035IP - 2003 - ED1 VELLEMAN Components NV Legen Heirweg 33 9890 Gavere Bel

2 Features:  Count up or down.  Count input trough on-board push buttons or by external pulses.  Display modes : Normal or time (hh:mm and mm:ss).

3 Assembly hints 1. Assembly (Skipping this can lead to troubles ! ) Ok, so we have your attention. These hints will help you to make this project s

4 Assembly hints 1.3 Soldering Hints : 1- Mount the component against the PCB surface and carefully solder the leads 2- Make sure the solder j

5  R9 : 10K (1-0-3-B)  R10 : 10K (1-0-3-B)  R11 : 10K (1-0-3-B)  R12 : 10K (1-0-3-B)  R13 : 10K (1-0-3-B)  R14 : 2K2

6 Construction  IC1 : 28P  DY1 : 14P  DY2 : 14P  DY3 : 14P  DY4 : 14P 7. IC sockets. Watch the posi-tion of the notch!  C1

7 Construction  C8 : 470µF  C9 : 10µF 15. Electrolytic capacitor. Watch the polarity ! C...  10p 12. Connector  X1: 4,1943… MHz. 14

8 Connection 18. Connection 1 2 3 4 5 6 78 9 10 1 GND 6 GND 2 + VA 7 + 5V 3 + VB 8 Count Down input (B) 4 GND 9 Count Up input (A) 5 E. OUT 10 GND 1

9 Fig. 1.0 Hook-up when using an adapter Hook-up when using a transformer K803552134679810+-ADAPTORE. OUTRELAYCount UpCount Down+ 5VFig. 2.0 10987654