Single side SMD PCB for MAX232 - 29x36mm for manual soldering
connect microcontroller(TTL) to PC via COM port (RS-232)

Single side 29x36mm SMD PCB for MAX232 used to connect microcontroller(TTL) to PC via COM port (RS-232).
PCB is designed for manual soldering and this is why SMD chip pads are so long and there is so large space between elements. Manual soldering elements is easy to be done from inside to outside. This means first must be soldered chip, then capacitors and finally connections to the board

Preview(copper side view):

microcontroller side

PC side / RS-232 side

PC side / RS-232 side

microcontroller side

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Components:
- 1x MAX232DW SMD SOIC wide pacage 16 pins
- 5x 1uF 16V SMD capacitors size 1206

Connection:
***PC/RS-232 side:
1-TX (connect to PC pin RX / DB-9 pin 2)
2-RX (connect to PC pin TX / DB-9 pin 3)
3-Ground (conect to PC pin Ground / DB-9 pin 5)
4-RTS (conect to PC pin CTS / DB-9 pin 8)
5-CTS (conect to PC pin RTS / DB-9 pin 7)
***Microcontroller side:
1-Power (5V)
2-Ground
3-CTS (connect to Arduino board GRN for automatic software reset)
4-RTS
5-RX (connect to MCU pin TX)
6-TX (connect to MCU pin RX)

Print without scaling to keep original size

Fixed linear regulator PCB design
size: 40x15mm, single side PCB

Fixed linear regulator PCB design 40x15mm.
Preview:




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Description:
PCB for fixed ouput linear integrated cirquit voltage regulator of tipe LM78XX LM78LXX like LM7812 or LM7805 or any equivalent one. This is back side/ copper view

Components:
-single side printed cirquit board (PCB) 40x14mm
-IC VR like LM7812 for 12 volt ouput or LM7805 for 5 volt outout
- integrated rectifier like W10M
- two 2 connections terminals like TS-501 2P
- one electrolytic capacitor, for input voltage of AC 12-15V it must be rated for 25V with capacity of 220uF or more, but it must fit in place
- one capacitor 100nF 50V