Assembly Manual for New Control Board 22 June 2018

Transcription

1 Assembly Manual for New Control Board 22 June 2018 Parts list Arduino 1 Arduino Pre-programmed 1 Faceplate Assorted Header Pins Full Board Rev A capacitors 1 Rotary encode with switch 1 5-volt regulator 1 OLED Display mounted on faceplate 1 PCB Control & Oscillator Board SI5351a pre-mounted 1 27 MHz Crystal Ohm Resistors 4 1K Ohm Resistors 1 10K POT (Gain Control) Assorted Header Pins The purpose of this board is to replace the original Control board and the Oscillator board of the Sandwich allowing for improved connection to the OLED display. The Gain Control is also replaced. Where possible, the assorted pin headers are placed where needed and trimmed to fit. A) The yellow header pin is used for I2C bus connections to the A4/A5 pin hole on the Arduino. 1

2 Blank board Front Steps for Assembly Front Side Assembly Blank board Back Solder the three (3) 104 capacitors where shown. Solder the Rotary encoder as shown. Solder the Gain Control as indicated. Solder 5 right angle header pins with plastic removed to holes for 8- V and GND as shown. Figure 1 shows PCB completed Front Side The Front of the PCB is now complete. 2

3 Back Side Assembly Solder the Voltage regulator to the back side of the PCB as shown in Figure 2. Vin pin is toward the center of the board while the GND pin is near the top edge. Note that the SI5351 SMD is already mounted. Solder the 27 MHz crystal. Solder the capacitors in place (0.1uf) (yellow in photo) Solder the ohm resistors as shown (Orange, Orange, Brown) Solder the 4 1K-ohm resistors as shown (Brown, Black, Red) Solder the Header pins as shown. o Yellow header pin is for I2C Bus and will extend through the Arduino for additional future options. o The 2-pin header pin on the top near the V-Reg is for JP10 functionality. o The 4-pin header, the 2-pin header and the remaining 4-pin header near the bottom are for connections to the Arduino. Figure 2a - VREG Figure 2 shows PCB completed Back Side Note: there are two soldered jumpers located near the Display pins. These are pre-soldered as appropriate for the voltage and ground configuration of the OLED display. 3

4 Mounting the Arduino. The 6 programming pins on the Arduino were previously assembled to allow for proper programming. The component side of the Arduino faces this completed PCB and slides onto the back of this PCB as shown in Figure 3. Solder the Arduino to the back of the completed PCB. Trim all header pins on the Arduino except for the 6-Pin Programming bus and the A4/A5 pins. Figure 3 shows PCB completed with Arduino mounted 4

5 Final PHASE Note the I2C bus connections at pins A4 and A5 on the Arduino are for future I2C bus usage. (presently used with LCD/Battery Pack Option) Mount the completed PCB to the Main PCB of the SSB Radio as shown in Figure 4: Figure 4 PCB mounted on main board Figure 5 Main PCB Figure 5 shows the holes on the main board for connections. Board should be flush with the main PCB. Solder the 5 pins in place and trim them. The OLED display is pre-mounted to the faceplate. Slide the faceplate over the control knobs and slide the 4 pins from the OLED display into the 4 holes on the top of the front of the new PCB. Once in place, secure the Tune Control with supplied mounting screws. Solder the OLED in place on the back of the PCB. Trim wires Slide the black 6 pin protector onto the programming pins of the Arduino if it had been removed. This will help prevent the Arduino from accidently shorting. You need to solder two wires (white) as shown. 5

6 Front view of the mounted front panel. Figure 6 Example of placement of the OLED screen Figure 6. Figure 7 Board mounted inside radio case Yellow wires shown connect to JP10 for Dual Band Option. Two White wires are for BFO and Fundamental Clock. OSCILLATOR BFO Solder the two white wires to the PCB (wires can be any color) Connect the white wire on the left to the BFO on the main PCB Connect the white wire on the right to the OSCILLATOR section on the main PCB 6

7 Figure 8 pin connections Identified Note: There are different meanings for VCC on these circuits. a) Raw on the Arduino is 12 to 7 volts DC. We use 8.0 volts. b) VCC on the Arduino is 3.3 volts DC. c) The VDD voltage on the SI5351A is 3.3 volts DC d) VCC on the OLED is 5.0 volts DC. All these voltages are applied properly through the PCB and connections. 7

8 Sandwich Full Schematic without Arduino 8