6 Channel Relay Driver Card
Revision as of 09:52, 22 January 2022 by Blwikiadmin (talk | contribs) (→Ultimate Relay Card Connections)
Contents
Features
- Drives Ultimate relay-switched LPF kit
- Open collector to turn off relay
- Drives low to turn on relay
- Only turn on one output at a time
- Inputs
- 6 channels (5 used)
- Active-high in to drive relay to on state
- 3.3K to transistor base
- 1 mA for 3.3V drive
- 1.5 mA for 5V drive
- Outputs
- Open Collector outputs from 2N3904 NPN transistors
- Power
- 9-14V power in
- 5V power out to power relays
- DC jack
- 36x37mm card
- 3 PCBs for $11 from OshPark
Ultimate Relay Card
Ultimate Relay Card Connections
- The RF input is the RFI pin of the 2 x 5-pin header on the left of the board (same as in the Low Pass Filter kit usage)
- RF output from the connections circled in yellow (in jumpers section below)
- An alternative is to cut the track from the SMA connector center pins and add a wire to connect it to the common bus track that runs horizontally across the board, finishing at the "RF" pad circled in yellow
- Cut/Jumper
- Cut on top side near Vertical SMA
- Jumper on rear side
- Jumpers
Ultimate Relay Card Jumpers
- To switch band pass filters, use the jumper configuration shown below
Ultimate Relay Card Connectors
- +5V
- B5
- B3
- B4
- B1
- B2
- GND
- RFIn
- GND
- RFOut
Connectors
J1 - Input Connector
- N/C
- IN1
- IN2
- IN3
- IN4
- IN5
- IN6
- GND
J2 - Output Connector
- GND
- OUT6
- OUT5
- OUT4
- OUT3
- OUT2
- OUT1
- 5V OUT
Power Connector
- 7-14V input
- Center positive
Control via VFO-003
- VFO-003
- Band select via menu option
- J8 - Arduino P5-P9
- Arduino pins
- Arduino D5 - 10M select
- Arduino D6 - 15M select
- Arduino D7 - 20M select
- Arduino D8 - 40M select
- Arduino D9 - 80M select
- Vcc
- GND
- GND
Testing
- Apply 9-12V to DC jack
- Use LED w/ resistor on output to check 5V
- One channel at a time
- Pull up channel input to +5V
- Check output with LED pulled up to +5V out
CAD
