Arduino Band Decoder
Arduino band decoder with relays for external device control. It reads the frequency or band data from your transceiver and switches output relays according to defined rules. This lets you pass the band information to other devices, such as antenna switches, RX/TX filters, power amplifiers and transverters.
The 24 × 24 × 8 cm metal enclosure was taken from one of the oldest DDS VFO projects by VU2WJ; it was selected because it holds all the parts listed below with enough space for wiring. The front panel was moulded from a 3 mm black acrylic sheet by a local vendor.
Parts List:
- 1. Nano V3.0 development board (Arduino compatible)
- 2. DC 12 V 16-channel relay module interface board with optocoupler protection and LM2576 power supply
- 3. CD4514 4-bit latch / 4-to-16 line decoder IC, DIP-24 package
- 4. MAX3232 RS232 to TTL converter module
- 5. 20×4 LCD display with blue backlight
- 6. 12-position SP12T rotary switch and knob
- 7. Connectors: DC, DIN 9-pin, mic and serial port
The project also includes a modification of a 400 W solid-state marine PA, the FURUNO PA2500, for automatic LPF selection and dual antenna output switching with the Arduino Band Decoder. The front panels of both the Band Decoder and the PA have a 12-position rotary switch for automatic and manual switching of antennas and amplifier LPFs as required.
1 Comment
Great work! This can be viewed on the following link:
https://hamphotos.com/post/2299?page=latest