RADIO and PHONE DECODER BOARD

DESCRIPTION

This board allows the decoding of the informations on the phone line (caller and dialer indentifiants) also the decoding of the radio messages coming from temperature sensors.
These messages are sent to the Raspberry through an UART serial interface.

The board is powered in 12V (50mA max)

SCHEMATIC

The board has a CPU PIC 18F4550 from Microchip, it controls :
- A serial UART at 19200 bauds interface to dialog with the main CPU.
- The RADIO informations from a receiver 433MHz (RX433N).
- The on hook and off hook informations of the phone line connected to the FCALLBOX SERVER
- The phone calling messages (CID) originally working with a NJM2211 decoder, has been implemented by decoding inside the CPU, using an analog input of it.
- The phone dialing messages (DTMF), same implemenation as CID.
- The 12V to 5V conversion is done with a DC/DC MP2303 from Monolithicpower

Download here the schematic in PDF format

BILL OF MATERIAL

The bill of material below shows only the components to be placed.

Tope side Ref Description Manufacturer / Reference R4,R5,R6 Resistor 1KR 5% 0603 All brand R21,R22 Resistor 10KR 5% 0603 All brand R18,R8 Resistor 5.6KR 5% 0603 All brand R19_2,R53 Resistor 22KR 5% 0603 All brand R38_2,R9,R10 Resistor 100KR 5% 0603 All brand R48_2 Resistor 13KR 1% 0603 All brand R49_2 Resistor 68KR 1% 0603 All brand R3,R17 Resistor 0KR 5% 0603 All brand R23 Resistor 330R 5% 0603 All brand R12 Resistor 330KR 5% 0603 All brand R16,R51,R52 Resistor 1MR 5% 0603 All brand C31_2,C32_2,C18,C12,C30,C41 Capacitor 100nF 16V X7R 10% 0603 All brand C38_2 Capacitor 10nF 16V X7R 10% 0603 All brand C36_2,C40_2,C42 Capacitor 10uF 16V X5R 1210 All brand C35_2,C34_2 Capacitor 22uF 6.3V X5R 0805 All brand C1 Capacitor 4.7uF 16V X5R 10% 1206 All brand C20 Capacitor 100uF 16V traversant pas 2.54mm All brand C10,C11 Capacitor 220nF 100V X7R1206 All brand L1 inductor 2.2mH 100mA min 8x8 BOURNS - RLB9012-222KL or equivalent L3_2 inductor 15uH 2.6A min WURTH ELEKTRONIK 74404084150 or equivalent C10,C11 line transformer ETAL / P1200 J2 Connector male 1x6 pitch 2.54mm All brand Test point RX TX 0V SD SC TP32 TP33 Connector male 1x5 pitch 2.54mm All brand J7 connector 2 points pitch 5.08mm WEIDMULLER 1760490000 or equivalent C20 Converter isolated 12V to 5V 1W or 2W RECOM / RS-1205S U6 optocoupler SHF6156 CMS All brand X1 XTAL 24MHz 30/30/40/12pF CMS 5x7 mm EUROQUARTZ / 1640921 or equivalent U3 Integrated circuit 18F4550 TQFP 44 Microchip / PIC18F4550-I/PT U2 Integrated circuit comparator LM211 SO8 All brand U14 Integrated circuit AOP LM358 SO8 All brand U8_2 Integrated circuit MP2303 SO8 MPS (Monolithic Power System) / MP2303ADN-LF D5 Diode BAS20 All brand D4 Diode TVS 5V like SDC05 NXP ref PESD5V0L1BA D6 diode bridge MD5S RECTRON ref MD5S MODULE RADIO Radio module 433MHz RX433N RX433N by Velleman or other

bottom side Ref Description Manufacturer / Reference C7,C8 Capacitor 22pF 50V COG 0603 All brand C9 Capacitor 470nF 16V X7R 10% 0603 All brand C4,C5,C6,C13,C33_2 Capacitor 100nF 16V X7R 10% 0603 All brand C37_2 Capacitor 3.3nF 16V X7R 0603 All brand C3 Capacitor 10uF 16V X7R 0805 All brand C19 Capacitor 10uF 16V X5R 1210 All brand R47_2 Resistor 10KR 5% 0603 All brand

CIRCUIT IMPRIME

- The board which has 51x91mm dimensions is a part of the PCB F00105 with 100x100mm dimensions.

- So, you need to cut it to get the PCB of the Display board.

Download the manufacturer files here

ASSEMBLY

The board has components on the two faces.

WARNING : a modification has to be applied, see next section

Download the top view here in PDF format      Download the bottom view here in PDF format

PIC Programmation

Download the zip of the file HEX V1.09 to program into the PIC      

pickit2 connection

PIC programming

step 1 : download the HEX file

step 2 : uncheck the Enabled checkbox of the EEPROM data

step 3 : program

Copyright François Callanquin, May 2015

Contact : fcallbox@free.fr