Mini-Kits stocks a number of PIC chips. Please download the component catalogue Section11 for prices.

Direct Digital Synthesizer Experimenters Kit using an Analogue Devices AD9851 DDS chip, which is suitable as an accurate signal generator, or as a VFO for a RX or TX project. The chip can be directly controlled by a computer, or by an onboard PIC 16F628 microprocessor. The DDS output uses a L.P.F. & MAR amplifier for up to +7dBm output.  The EME85 board has connections for an LCD display for frequency readout, & a control board with rotary encoder for frequency control. The frequency reference can be either an onboard computer xtal ( eg 30.000 / 100.000MHz ) oscillator module, or an external temperature controlled high stability oscillator. 

All DDS Kits are supplied with the AD9851 DDS chip Soldered to the Board, & a Pre-Programmed PIC 16F628 Chip with the latest Software Version.

The EME85 KIT only includes the PC Board with all basic onboard components, & the AD9851 DDS chip soldered to the board. The EME85 KIT does not include any of the other optional components that are supplied in the DDS KIT1 & KIT2, or separatelly. See Product Table Below

Specifications basic DDS Kit:

1/ Frequency Range 0Hz to 60MHz ( AD9851 Chip )

Please Note that it does not have bandswitching, or USB, LSB modes etc. ( Not Software Programmed For This )

2/ Frequency Resolution 1Hz

3/ Frequency Step Size 1Hz, 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, 1MHz, 10MHz, 100MHz, 1GHz

4/ Offset Display Programmable RX & TX, including Repeater Offset.

5/ Display Multiplier Programmable to X1, X2, X3 etc use with low frequency microwave transmitters using multipliers to higher bands.

6/ Calibration / Adjustment Menu to set all options & settings without having to reprogram the PIC with a computer.

7/ RF Output typically +7dBm

WHAT BITS DO I REQUIRE FOR MY APPLICATION? CLICK HERE

Please Note that the above picture shows the EME85 KIT with optional OSC3/4 Osclillator module fitted.

 

COMPONENTS AVAILABLE SEPARATELLY

WHAT BITS DO I REQUIRE FOR MY APPLICATION? CLICK HERE

EME85 KIT

( Basic DDS Kit ) requires the addition of at least a EC12E rotary encoder, OSC3 or 4 module, LCD1 display, & a couple momentary contact pushbutton switches to make a working product.

Additional Software features like direct keypad entry, & frequency memory are only available when using the EME129 control board.

All Software settings can be changed in the menu setting screens that are displayed on the LCD module. The pushbuttons connected to the DDS along with the rotary encoder are used to change & memorize the settings into the PIC. No Reprogramming of The PIC with a computer is required.

Read about Software features by downloading this document

Mini-Kits takes no responsibility for faults & minior glitches in the Software supplied with Kits.  The Software is supplied free of charge to Mini-Kits, & no problems have been found with the final version 2.10 since Nov 2002.

Advanced Control board Kit, 100x45mm suitable for controlling all functions of the EME85 DDS Kit.  Functions including Tuning, TX/RX switching, Repeater, RIT, Step Size, Calibrate, & Memory. 

The Complete Kit comes with a Professional Plated through hole PC Board, & all on board components including the EC12E encoder.  The EC12E has a 6mm diameter shaft. The Kit now includes 6 x 8mm momentary pushbutton switches to allow for easy mounting in project boxes.

The Number of Memories, that can be programmed will depend on the Mode that is selected in the software Menu.  The more options e.g. Repeater offset, TX offset, & frequency limits selected will reduce the number of memories available.  Mode 1 allows for 22 RX Memory frequencies, up to Mode 7 that has all options available which will only allows up to 3 Memories to be saved. Refer to the DDS page for more information.

The Keypad1 is optional & allows for direct frequency entry.  A Keypad does not have to be connected to the EME129 control board to make it work.

The Knob1 to suit the EC12E encoder is optional & is a high quality 28mm Knob with a locking collet, & press fit cap.

 

Sweep Generator Kit suitable for aligning & testing equipment. The Kit uses the Basic EME85 DDS Kit with the addition of a EME159 Control Board & 4x4 Keypad. The Kit uses modified DDS software to produce a Signal Generator, Sweep Generator function, & RF Power Meter using the optional RF Power Head Kits.

The Control board Kit 3, 45x45mm along with a 4x4 Keypad is suitable for controlling all functions of the Sweep Gen Kit. Functions including Frequency tuning, Step Size, Calibrate, Memory, Sweep Direction, Sweep Start Stop, Sweep speed, Fast Sweep, VFO/Sweep mode. 

Up to 11 Sweep Generator Memories, start, stop frequency, & sweep rate can be programmed. Refer to the Sweep page for more information.

The Kit comes complete with professionally plated through hole PC boards with solder masks.

The Keypad2 is required & allows for direct frequency entry, & all signal & sweep functions. 

The Knob1 to suit the EC12E encoder is optional but is included in the SWEEP KIT1 & is a high quality 28mm Knob with a locking collet, & press fit cap. It suits the EC12E 6mm Diameter shaft

Specifications Sweep Generator Kit:

1/ Frequency Range 0Hz to 60MHz ( AD9851 Chip )

2/ Frequency Resolution 1Hz

3/ Frequency Step Size 1Hz, 10Hz, 100Hz, 1kHz, 10kHz,100kHz, 1MHz, 10MHz, 100MHz, 1GHz

4/ Calibration / Adjustment Menu to set all options & settings without having to reprogram the PIC with a computer.

5/ RF Output typically +7dBm

6/ Slow sweep mode, 10Hz to 67kHz Second. Fast sweep mode, 12kHz to 20MHz Second

Refer to the Software Notes for more detailed information & Use, Download the Sweep Readme document.

 

WHAT BITS DO I REQUIRE FOR MY APPLICATION? CLICK HERE

 

 

NEW IN STOCK

Order No	Description	Each
SWEEP KIT1	Complete Kit To build a 0 to 60MHz Sweep Generator. ( Includes EME85 KIT, OSC4, LCD1, SMA09, EME159 KIT, KNOB, KEYPAD2, EME159 CONN, & PIC16F648ASWP)	$180.00 AUD
SWEEP KIT2	Full Update Kit to completely convert either of the DDS Kits 1 or 2 ( Includes EME159 KIT, KEYPAD2, EME159 CONN, & PIC16F648ASWP )	$45.30 AUD

COMPONENTS AVAILABLE SEPARATELLY

WHAT BITS DO I REQUIRE FOR MY APPLICATION? CLICK HERE

Order No	Description	Each
EME159 PCB	PC Board Only ( Supplied with EME159 Kit )	$15.00 AUD
EME159 KIT	Complete Kit ( Includes EC12E Encoder )  No Keypad, Knob or EME159 CONN Kit Included	$19.50 AUD
EC12E	ALPS Rotary Encoder ( Included with EME159 Kit )	$2.20 AUD
KEYPAD2	16 Key Alpha Numeric Keypad 4x4 Matrix	$8.60 AUD
KNOB1	71 Series 28mm diameter Knob & Cap to suit EC12E	$8.50 AUD
EME159 CONN	PCB Header Connector Kit to suit EME159 Kit	$4.85 AUD
PIC16F648ASWP	PIC16F648A Programmed with Sweep Software	$15.00 AUD

PLEASE NOTE: PIC SOFTWARE ASM & HEX FILES ARE NOT SUPPLIED OR AVAILABLE FOR THIS KIT. WE ONLY SUPPLY THE SOFTWARE PRE PROGRAMMED INTO THE PIC MICROPROCESSOR IN THIS KIT.

Although the Sweep Generator Software has been designed to use a new EME159 control board & 4x4 Keypad, both DDS Kits 1 & 2 Can be upgraded to to a Signal/Sweep Generator simply by replacing the PIC micro with the replacement PIC16F648ASWP. All the existing Transceiver functions will be lost, however the software will recognise that you are using a EME129 control board & 4x3 Keypad. However, the better option if you are only going to use you DDS Kit 1 or 2 as a signal generator & want to have both the Sweep & Power meter functions, it is then best to buy the complete SWEEP KIT2 & replace your existing EME129 control board & 4x3 Keypad.

The EME159 control board has been designed to interconnect the LCD display, 4x4 Keypad & the Power Head board saving lots of time having to modify the wiring from the standard DDS Kits 1 & 2. All button switch functions are now handled by the 4x4 Keypad.

The Power Head is designed to be used in conjunction with the DDS Sweep Generator Kit, but can also be used with a Multimeter for simple RF Power measurements. The Kit uses the AD8307 Logarithmic Amplifier that allows RF measurement from DC to 500MHz. A PIC microprocessor is used to convert the analogue DC volts to I2C data & clock, to be read by the Sweep Generator Kit. All calibration data is stored in the PIC processor.

Specifications:

PCB Dimensions: 60x22mm 
Supply Voltage: +7 min to 14v max  @ 15mA max
Maximum Input: +26.5dBm ( Recommend +20 Max )
Dynamic Range: -75 to +17dBm ( 92dB +/-3dB AD8307 )
Bandwidth: DC-500MHz AD8307
Resolution: 0.25dB Minimum ( PIC A-D 1024 )
Output Linearity: +/- 1dB DC-500MHz

 

Refer to the Software Notes for more detailed information & Use, Download the Sweep Readme document.

 

Order No	Description	Each
PWRHEAD KIT1	Complete Kit To Suit Sweep Kits ( Includes Power Head Board, components, PIC12F675 PWR2, & SMA Plug )	$51.50 AUD
PIC12F675 PWR2	PIC12F675 Programmed with LTC5508 Power Head Software	$Email

PLEASE NOTE: PIC SOFTWARE ASM & HEX FILES ARE NOT SUPPLIED OR AVAILABLE FOR THIS KIT. WE ONLY SUPPLY THE SOFTWARE PRE PROGRAMMED INTO THE PIC MICROPROCESSOR IN THIS KIT.

The Power Head is designed to be used in conjunction with the DDS Sweep Generator Kit, but can also be used with a Multimeter for simple RF Power measurements. The Kit uses the LTC5508 Logarithmic Amplifier that allows RF measurement from 300MHz to 7GHz. A PIC microprocessor is used to convert the analogue DC volts to I2C data & clock, to be read by the Sweep Generator Kit. All calibration data is stored in the PIC processor.

Specifications:

PCB Dimensions: 60x22mm 
Supply Voltage: +7 min to 14v max  @ 15mA max
Minimum Input: -27.5dBm
Maximum Input: +12.5dBm
Dynamic Range: 40dB
Bandwidth: 300MHz to 7GHz
Resolution: 0.2dB Minimum ( PIC A-D 1024 )
Output Linearity: Not Linear ( set in software )

A replacement PIC16F648A with Sweep Software will have to be fitted to the DDS board to suit the New 7GHz Power Head Kit, as it requires more memory space for the calibration menus. All previous Sweep Kits will need a replacement if you want to use the new 7GHz Power Head Kit.

The 7GHz Power Head Kit will require test equipment to align as the LTC5508 chips have too large a variation for it to be accurate at all power levels & frequencies with the standard software calibration.

 Refer to the Software Notes for more detailed information & Use, Download the Sweep Readme document.

Order No	Description	Each
PWRHEAD KIT2	Complete Kit To Suit Sweep Kits ( Includes Power Head Board, components, PIC12F675 PWR2, & SMA Plug )	$44.50 AUD
PIC12F675 PWR2	PIC12F675 Programmed with LTC5508 Power Head Software	$Email
PIC16F648A SWP	PIC16F648A Updated Sweep Software to suit both AD8307 & LTC5508 Power Head Kits	$15.00 AUD

PLEASE NOTE: PIC SOFTWARE ASM & HEX FILES ARE NOT SUPPLIED OR AVAILABLE FOR THIS KIT. WE ONLY SUPPLY THE SOFTWARE PRE PROGRAMMED INTO THE PIC MICROPROCESSOR IN THIS KIT.