The UI will be programmed to set: Transmit/Receive Frequency, CW Speed, Beacon Type/Timing, and a host of other function that have not been thought of yet. It is a general purpose UI for controlling the functions of the Prop. Note: Jeff and I have used the Prop for Beacon Transmit functions, but we have not successfully use it for a LO and BFO for a receiver yet (only due to lack of time and effort). There maybe concerns with phase noise, and Prop generated QRM, when used in a receive function.
The connection to the Prop Protoboard will be a single eight pin header.
- SCL (I2C)
- SDA (I2C)
- 5 Volts
- Clock Interrupt
- Switch Interrupt
- LCD Display (A Parallel LCD but the board will provide the I2C converter)
- LCD I2C (another connector for an alternate display from another manufacture)
- Real Time Clock (RTC)
- Battery Clip for RTC Backup
- Eight LED's
- Two Rotary Encoders with Push Buttons
- Two Push Buttons
- Piezo Speaker
- 3.3Volt Regulator
|Top Side - LCD|
|Back Side - Quad Pot, RTC, and Two I2C Expander|
The UI will fit on the Propeller USB Protoboard along with the Standard KeyBoard, Video Connector, and Mouse (KVM). The I2C expanders that are used on the Prop-UI will minimize the required I/O pins from the Prop, allowing the KVM to be used when desired.
Note: there are many Display Boards available on the Internet, but nothing that provides a low pin count connection to the Prop, which include the peripherals that I am including for the UI.
The UI board will be about 2.5 x 3.1 inches, which is much bigger that most of my projects.
If all goes well, this project will be sent to the PCB manufacture by Friday, then a two week wait for the first three boards to return.