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RFID Port Combiner

2 years ago 769
  • Description
  • Documents
  • BOM
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Description

PCB suitable for hammond 1591c enclosure

The first version has been tested and revisions put in.

The only restriction in the second version is that I have changed the voltage down to 9V as the current at full load with all relays engaged is 300mA and while it is working reliably it is close to the limit of the LDO which gets hot (4v x 0.3 = 1.2W power) I can use 9v for my purposes but would recommend moving to a switching reg for proper industrial supplys (I may make a rev3)

Note the C Code is attached. Just a single 300 line file so should be easy to follow.

Documents

Circuit

PCB

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted
1 DS1487M U1 SOIC-8 1
2 1N4001 D1,D2,D4 SOD123 3
3 1u C1 C1210 1
4 0.33u C2 C1210 1
5 22p C3,C5 C0805 2
6 100nF C4,C6 C0805 2
7 11.0592MHz Q1 HC49UP 1
8 PIC18F24K22 U3 SOIC-28 1
9 ICSP J2 1X05_LOCK 1
10 10K R2,R7,R9 R0805 3
11 1K R3,R1,R4,R5,R6,R8,R10 R0805 7
12 HOST JP1 1X02_2.54_SCREWTERM 1
13 PWR JP4,JP2,JP3,JP5 1X02_2.54_SCREWTERM 4
14 RFID1 L1 0805 1
15 PRINTER L2 0805 1
16 FUSE_PTC F1 PTC1812L 1
17 PRINTER J3 M1X4 1
18 RFID2 L3 0805 1
19 PC L4 0805 1
20 PWR L5 0805 1
21 2N7000 Q2 WSOT-23 1
22 BUZZER SG1 BUZZER-12MM-NS 1
23 100 R11 R0805 1
24 ZENER ZD1,ZD2 SOD-123 2
25 RELAYS J4 M1X6 1
26 HT1117-50_SOT223 U4 SOT-223 1

Attachments

Filename Download
main.c.txt

Members

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