IK1ZYW Keypad for FT-817
Contents
1. This project has been made possible thanks to in chronological order e my Parents that bought me an experimenter s book when was 10 and supported me in my studies hobbies and choices e my high school electronics Teachers Bruno De Stefano and Elisabetta Cuniberti whose passion for the subject has furthermore marked my life e KA7OEI that published an extensive guide to Yaesu s CAT protocol e my supporting Wife and curious Daughter that let me dedicate some night time to this idea and patiently tolerated the kitchen table invasion Doc v 20100916p 4 IK1ZYW Keypad for FT 817 public firmware Disclaimer Important notice read twice Although the keypad firmware is not sending dangerous data to the radio the communication protocol does not use any form of checksum Therefore a mis interpretation by the radio can cause unexpected results from a CPU crash needing a power off on cycle to a complete wipe of all EEPROM data including configuration software calibration alignment and memories You are strongly encouraged to record at least all 76 soft calibration settings plus any other information stored in your radio before using this keypad The 13 8Vcc line on the ACC port of FT 817 is connected to the power supply through a 10 ohm 1 16W resistor It is not fused Damage to the radio will occur if this line gets shorted Moreover the voltage on ACC port is always present including when internal batteries are instal2. command sequence requires the exchange of 12 bytes At 38400 baud the data transmission would take 0 4ms while at 4800 baud it takes an incredibly slow 3ms better safe than sorry Doc v 20100916p 8 IK1ZYW Keypad for FT 817 public firmware 1 4 7 e elfo o elo lo ojo jo gt Default Main Menu assignments are as follows P 3 VFO A B 6l Ll BS ES efe feo Controls corresponding to keys A B C D are effective with a single press Mode change and presets if available on your keypad version expect a second third key press that specifies your choice green LED is off if installed Numeric keys require up to six presses to complete the direct frequency dial sequence Direct frequency dial Frequencies have to be inserted specifying all leading zeroes hundreds of MHz tens of MHz and MHz Direct frequency dial always begins with a digit key press Starting with numbers 0 1 and 4 will probably result in valid frequencies but there is no control over it an invalid frequency will be sent to the radio that will simply ignore it Frequencies outside the specified radio receive coverage are invalid see your FT817 datasheet user manual thus ignored Doc v 20100916p 9 IK1ZYW Keypad for FT 817 public firmware Direct frequency dial can be prematurely ended by pressing a non digit key The microprocessor will add trailing zeroes for you and send the command to the FT817 While the frequency sequence i
3. delays Once the red LED blinks meaning that the key press has been read wait 200ms before expecting a change on the radio If nothing happens for one second try the command again If nothing ever happens please contact the Support NB the CAT command sequence laying beside this control applies to FT817 s only Doc v 20100916p 13 IK1ZYW Keypad for FT 817 public firmware Extra functions The following functions have been developed and tested They are not included in the publicly available firmware but can be loaded on request as a replacement of existing functions see Customizing below Each function occupies a different amount of program memory therefore it may not be a direct replacement of another function in terms of used bytes Quick timed tune Manual tune Break in on off Scan up down stop Repeater offset direction Menu Page Quick Jump VFO A B 25 onboard memories instead of 15 KeYeR on off Split on off Lock on off RIT on off AGC on off PBT on off FaST on off Doc v 20100916p 14 IK1ZYW Keypad for FT 817 public firmware Customizing Since every FT817 owner probably has her his own habits it is possible to request some customization of the keypad firmware up to the extent of available program memory Given a basic set of features like direct frequency dial and onboard memories all other key assignments can be set to suit your needs Please be aware that some settings are
4. IK1ZYW Keypad for FT 817 public firmware IK1Z2YW Keypad for FT 817 ND User s Manual public firmware Ha SRALYLW rection AN rights reserved Doc v 20100916p 1 IK1ZYW Keypad for FT 817 public firmware Table of Contents What 1S TE A AA A iS 3 SPECIAL MMS A A as 4 DIRETE I AAE AR e a Ce Ma se Ee 5 QU aa 6 TESEO idos 7 HOWItWOTKS oes ssig cass Meu tcc a eda ava E sa tse tang a cael a a E aa ea a aa aS 8 Radio UP A ads ell au ies DNI 8 MA M 7 Nee eae ekg RI ASC RAE WV BPO ETE CR PSE TR AE RIPE AE A 8 Direct trequeney al tit 9 Freguency PES A A nds dis 10 Mode A loe de 11 A O E NN 11 A A A A 11 Met r TACOS id anaa cach sede ip band Vans dye aT a abe casn tenn duane Eao aeaa e Eaa Epes eeraa 11 A O A 12 E o es Ello a a ds RO 13 QUA A A E A AA A ladda deat ATEA 13 Break tool ia E EA EA 13 A 13 Repeater oi SAI EA 2 T tute 14 MENO ic Ti ia 14 CUSTOM E A ree e Tare et rete geet ele See ae 15 SUP ao sb art oo DORE 17 o A ee 18 What you would Penis 19 Troubleshooting reae ira a aa EE ts Shute reariale nts T E aa E ate 20 Microcontroller Pro a atone Secu eastae ae baSeeteaeules a hulsay eatetataea Geass 21 PSE TINO MINS sore 5 RN 22 E A O 24 To Keypad rreren e ra a aa a raS E AAN E E EEE a tone cuens Aa O rait o OE Dra 24 AROA A E N see E E E A E A EE 25 Doc v 20100916p 2 IK1ZYW Keypad for FT 817 public firmware What is it The IK1ZYW Keypad for FT 817 is a wired partial remote control for the little Y
5. able No No No No PBT on off Possible No No No No Fast tuning on off Possible No No No No Doc v 20100916p 19 IK1ZYW Keypad for FT 817 public firmware Troubleshooting Problem Possible solution LED blinks but radio does not react Test it with VFO A B key A O check the connecting cable O power the 817 with an external supply switch everything off look at the LED and switch the supply ON it should blink O check the voltage between pin 20 and pin 10 on the microcontroller should be 5V It has been observed that the keypad does not work if the Voltage shown on FT817 display is less than 8V dead int l ext l batteries The keypad does not react when transmitting The keypad is not designed to be RFI proof The radiofrequency generated when transmitting close to it may interfere with keypad readings and block the keypad operation Ferrite beads and a shielded box may reduce interference t has been observed that full 5W into a dummy load on the bench 30cm from the keypad do interfere The keypad has drained the internal battery Whenever a DC source is connected to the FT817 including the internal battery pack there will be voltage present on the ACC port therefore the keypad will draw current if left plugged Do not store away the FT817 with the keypad attached if you have internal batteries installed unless your keypad has an on off switch Keypad is switched off but LED appears to be
6. ach key press In other words draw the connection map of your flavour of keypad before connecting it to the chip As a starting point my matrix keypad has from left to right columns in ascending order then rows in ascending order C1 C2 C3 CA R1 R4 R7 R These go to pin 12 C1 to pin 19 R But your hardware keypad might be different Illustration 1 contact layout on one keypad have found that 8 way pin headers produce a clean and sturdy connection between the keypad and the circuit Doc v 20100916p 24 IK1ZYW Keypad for FT 817 public firmware To FT 817 Depending on your choice of powering the keypad through the ACC port or an external battery you need a cable with four or three wires respectively suggest using a shielded cable with three or two wires respectively Use a 4 way PCB connector to easily remove the connecting cable from the circuit Alternatively you can mount a 4 way panel socket and use a matching plug on one cable end Towards the FT 817 cable end you need a MiniDin8 plug Soldering into these requires a steady hand some level of magnification and a thin iron tip Get hold of some heatshrink pipe to protect your joints afterwards Check with an ohm meter for shorts between pins before using the cable Good luck and remember am not responsible for your faults There are commercially available cables with MiniDin8 plugs namely for an old Apple computer application Sun SPARC stati
7. aesu transceiver It was conceived during a 6 hour field session at 2700 m a s l for a VHF contest in August 2008 Three functions were accessed very often always hunting for them through the menu power level meter mode and VOX toggle Some easily accessible presets would have helped quick QSYs to special band spots too A search on Internet returned few keypads for the little 817 but none that would export my three most needed functions So this project was born First a microcontroller had to be selected Atmel line was chosen because their chips can be programmed with high level languages C and even BASIC and are cheap Then built the simple development hardware and started to get acquantained with the uC architecture last programmed was Zilog s Z80 LED blink send VFO toggle send frequency information interact with the radio It took 3 months of after dinner development to produce a fully functional FT 817 accessory What is it NOT This keypad is not a replacement of any computer based control software This keypad is not designed to work with all Yaesu radioes altought basic functions are portable to FT 857 and FT 897 direct dial VFO toggle on board presets and mode change This keypad is not designed for use in any environment or use case that involves direct or indirect emergency traffic handling and or life support activities Doc v 20100916p 3 IK1ZYW Keypad for FT 817 public firmware Special thanks
8. both VFO and band specific and cannot be handled by this keypad like IPO ATT NAR tuning step On the other hand the following menu functions can be developed and loaded leaving something else out DCS CTCSS Lock RIT on off and amount NB AGC DW PRI Scan BK KYR VLT DSP CHG CW keyer speed PBT Fast tuning Quick tune for ATUs When thinking of a custom firmware keep in mind that out of 16 keys 13 of them can be used for special controls They can act as direct access to a function or as a way into a submenu Each submenu then has up to 16 assignments available as long as there is available program memory but there is not that much memory space anyway A good way to request a custom firmware is to compose a priority ordered list from most to least needed functions Study the table with functions few pages below and feel free to add any of those listed as possible will try to fit as many as possible according to your ordered list and will contact you with a proposed configuration An example See what one gentleman asked for and actually got after some interaction Function Implemented 1 Scan up down Yes 2 Direct dial Yes 3 Meter function Yes 4 Power level Yes 5 BK break in Yes 6 CW delay Not enough memory 7 Sidetone volume Not enough memory 8 RPT simplex Yes 9 Onboard memories Yes 10 VFOA B Yes 11 VOX Not enough memory 12 Mode chan
9. emory is written or sent to the radio Keypad memories are written to the currently selected VFO First the frequency is sent then mode is set and frequency sent again This process should avoid setting an invalid mode in the broadcast band WFM only that would hang the FT817 requiring removal of power CAUTION When programming your own chips be aware that EEPROM area is not initialized therefore do not recall onboard memories unless you have programmed them Chips sent by the author have their 15 onboard memories set to 14060 kHz CW Doc v 20100916p 10 IK1ZYW Keypad for FT 817 public firmware An excercise write a preset in location A Tune to 29600 kHz FM mode Use either front panel controls or the keypad itself e press and release red LED blinks as key is accepted green LED goes off e press and release red LED blinks as key is accepted e press and release A red LED blinks as key is accepted e red LED blinks twice as long to show the sequence has ended and data has been stored green LED turns on again Now tune away and change mode Recall the stored onboard memory e press and release LED blinks as key is accepted e press and release A LED blinks as key is accepted e radio changes back to 29600 kHz FM Frequency presets Effective 16 September 2010 frequency presets on free firmware have been changed into the onboard memories function The followin
10. es No No No No 2 Supports other FT857 FT897 Yaesu RX RTX Probably FT100 FT857 FT897 n d No Supports other brands No Icom No No No Self powered Yes Yes Yes Yes Yes Estimated cost 25 55 kit 75 110 20 20 IK1ZYW M Q R M IT9XXS DH1PAX VFO A B Available No Yes Yes No VFO A B Possible No Yes No No A Direct dial Available Yes smat Yes smart Yes Yes 5 Mode change Available Yes Yes Yes No Auto mode change No No No Yes No a Split on off Possible No Yes Yes No s Repeater offset Available Yes No Yes Yes g Quick tune Available No Yes No No gt Manual tune Available No Yes No No Timed tune Available No No No No E Lazy PTT Available No No No No o RIT on off Possible No No No No 2 Freq mode readout No Yes No No No Fixed presets Available No No No No Onboard memories Available No Yes No No IK1ZYW M Q R M IT9XXS DHiPAX VOX on off Available No No No No Meter mode Available No No No No Power level Available No No No No Set DCS CTCSS Possible No No No No Lock on off Possible No No No No Set RIT amount Possible No No No No NB on off Possible No No No No 7 AGC mode Possible No No No No DW on off Possible No No No No PRI on off Possible No No No No A Scan up down Available No No No No Z BK on off Available No No No No gt KYR on off Possible No No No No E VLT on off Possible No No No No DSP on off Possible No No No No CHG on off Possible No No No No CW speed Possible No No No No Quick Menu Jump Avail
11. g text is left in the document for backward reference purposes only Up to 16 frequency presets can be factory programmed in the keypad firmware They are accessed with two key strokes another key The following table maps the default QRP presets vs key distribution 1843 CW 3560 CW 7030 CW 10116 CW 14060 CW 18096 CW 21060 CW 28060 CW 14285 USB 50090 CW 21285 USB 28500 USB 144300 USB 50150 USB 432200 USB 29600 FM So 4 goes to 20m QRP CW calling frequency 7 to 20m QRP SSB calling frequency to 70cm SSB Dx etc USB frequencies have been pre programmed for those bands where according to the author QRP voice activity is likely to be more successfull Presets are written to the currently selected VFO First the mode is changed then the new frequency is sent to the radio While the preset sequence is being completed the green LED stays off As soon as both keys are pressed the green LED switches on and the keypad returns in the main menu Doc v 20100916p 11 IK1ZYW Keypad for FT 817 public firmware Mode change This function is available with dedicated buttons on the FT817 therefore it is the preferred candidate to be left out of the microcontroller program memory in order to fit more useful and less accessible functions for custom firmwares If your keypad firmware has the mode change function you will access it with a press
12. ge Not enough memory 13 Band up down Not possible 5 A B C D key functions mode change onboard presets and direct dial as described in this document fill 95 of the available program memory This means about three more presets could be added but not a FT817 function that eats about 8 of program memory Doc v 20100916p 13 IK1ZYW Keypad for FT 817 public firmware Send me a detailed description of your needs or request at ik1zyw yahoo com mention keypad in the subject line Doc v 20100916p 16 IK1ZYW Keypad for FT 817 public firmware Support This keypad contains a microprocessor that runs software Even if all efforts have been made to produce a stable software it can still contain bugs Fortunately the microprocessor chip can be reprogrammed some thousand times with a simple hardware that connects to a computer parallel port Updates to public firmware versions might be released in the future and announced on the keypad home page URL http spazioinwind libero it ik1zyw hardware keypad index html If you encounter an unexpected or undocumented behavior in your keypad please contact me at ik1zyw yahoo com mention keypad in the subject line If you are not equipped to program your own chip can send a preprogrammed item at live costs offer subject to hardware and time availability Feel free to add any amount of gratification for the research amp development work do
13. led and the radio powered off don t forget to switch off your keypad or unplug it when not in use If you feel uncomfortable in using this line please use a separate 9V battery to power the keypad Otherwise use heatshrink pipes for each pin on homemade plugs FT 817 stores every setting in a EEPROM EEPROM cells have a finite number of write cycles in the order of 10 000 or more While front panel buttons probably wear out before EEPROM cells exhaust using an external control interface such as this keypad as well as any other computer software will increase the stress on radio internals No responsibility is taken for data loss or any damage to your equipment All trademarks belong to respective owners Yaesu Atmel Icom Microchip 1 Software calibration settings are unique to every single device If their values get lost you need to send your radio back to Yaesu for re alignment These settings are accessed by pressing keys A B C simultaneously and then powering up the radio Copy them all to paper and store it in a safe place Feel free to make several copies of your backup 2 This safery procedure should be undertaken even when using a CAT computer cable and a computer control software The danger is not in the keypad but in the potential misinterpretation of data by the FT817 Doc v 20100916p 5 IK1ZYW Keypad for FT 817 public firmware Quick start While it is worth reading this document to the end understand yo
14. me Quantity Part Name Doc v 20100916p 22 IK1ZYW Keypad for FT 817 public firmware 1 ATtiny2313 20PU 9 470 ohm AW 1 20 pin DIL socket 1 LED red 1 11 0592 MHz XTAL 2 22pF 1 78L05 1 330nF 1 Matrix 4x4 keypad 1 100nF 1 1m cable 3 wires 1 MiniDin8 plug shield Optional parts make your keypad easier to handle and give it a more professional look Quantity Part Name Quantity Part Name 1 DPST switch 1 8 way pin header female 1 8 way pin header 1 4 way female male connector 1 4 way male 10cm Heatshrink 1mm pipe connector for PCB 1 Box plastic or metal 1 LED green 1 470 ohm W for the green LED You will also need some wire at least two different colors a max 25 30W soldering iron and some solder Doc v 20100916p 23 IK1ZYW Keypad for FT 817 public firmware Connections It is strongly advised to connect the keypad to the transceiver when no power is supplied to the radio including internal batteries unless you have installed an on off switch Remember that whenever a DC source is connected to the FT817 including the internal battery pack there will be voltage present on the ACC port therefore the keypad will draw current if left connected To Keypad Eight wires to a 4x4 matrix keypad in the diagram are labeled according to the first matching key in the row column DO verify with an ohm meter which lines are connected at e
15. n it is suggested to operate the keypad when the radio is in receive mode and idle not operating it through its front panel buttons switches Please note that because of memory constraints of the chip used not all functions can be programmed in therefore some operations described below will not apply to your version Refer to the shipping notes that accompanied your chip or firmware to know what your keypad is able to do Radio setup The keypad firmware communicates with the FT817 at 4800 baud the lowest possible data rate in order to minimize communication errors On the radio press F button for about one second navigate to menu 14 CAT rate set display to show 4800 long press F again to store the value You re ready to go For easier compatibility with other devices you might connect to your FT817 a different speed 9600 or 38400 baud as supported by the radio can be programmed Please specify it when ordering your chip or firmwre Main Menu At power up and after a command sequence has been submitted to the radio the keypad sits in the Main Menu As soon as the keypad is powered it blinks the red LED and lights up the green LED if installed Assuming that your keypad looks like this 3 Not all setting changes might have a corresponding display symbol on the radio or might not be displayed in the current radio state i e Enabling VOX in CW mode changing the TX meter function 4 The longest
16. ne Contact information as shown above Please also consider joining the keypad reflector mailing list at Yahoo Groups http groups yahoo com group 817keypad Doc v 20100916p 17 IK1ZYW Keypad for FT 817 public firmware Technical specifications Core microprocessor Clock frequency Power supply Current Communication protocol Communication speed Doc v 20100916p Atmel ATtiny2313 20PU 11 0592 MHz 8 to 30 V DC internally converted to 5V 14mA in stand by 30mA LED ON red mA during data exchange to be measured Serial at OV 5V levels Yaesu CAT 4800 baud 8N2 18 IK1ZYW Keypad for FT 817 public firmware What you would get if This table summarizes what other keypads for FT 817 ND are advertised for and how this keypad compares to them Since this is not a perfect world each one is a winner and a loser somewhere lf you know of other products will be glad to include them in the comparison chart see contact info few pages back Bold cells are unique amongst all products IK1ZYW M Q R M IT9XXS DH1PAX Core Atmel AVR Unknown Unknown Microchip PIC Atmel AVR Free Firmware Yes No No Yes No Public Diagram Yes No No Yes Yes Upgradable live project Yes No No No No Rugged commer cial product No Yes Yes No No S Customizable Y
17. on This effect is caused by some current flowing from the FT817 ACC data lines mainly TXD into the microprocessor A circuit correction is being studied as of 2009 01 21 Either do not switch off the keypad or use a 2 way switch to interrupt both Vcc and data lines Alternatively unplug the keypad However no damage has been reported neither to the FT817 nor to the keypad Doc v 20100916p 20 IK1ZYW Keypad for FT 817 public firmware Microcontroller programming This keypad has been developed and programmed using a simple parallel programmer and avreal32 programming software With a brand new ATtiny2313 chip fuses need to be changed in order to work with the provided firmware Using avreal32 definitions fuses have to be set as follows 1 off OSCCALS 68 6A CKDIV 1 CKOUT 1 SUT 2 CKSEL F DWEN 1 EESAVE 1 WDTON 1 I J BODLEVEL RSTDISBL SELFPRGEN If you are unsure about their meaning just change fuses in bold Basically you need to set external clock above 8 MHz without internal divider Refer to ATtiny2313 Datasheet for further information Please note that am not able to help with the programming process or debugging Doc v 20100916p 21 IK1ZYW Keypad for FT 817 public firmware Assembling 5V GND 330n 100n 78LO5 to FT817 ACC ON OFF oun J za p 9 pa To P N gt R4 zE c gt Rl to 4x4 seen as looking towards acd CA matri
18. on the symbol The second press will change the operating mode as follows Sequence Changes mode to 4 AM 5 FM 6 CWR ae USB 8 LSB any other key CW Please note that this function mimics front panel buttons so a change from to CW CWR will result in automatic frequency adjustment of an amount equal to your sidetone setting While the mode sequence is being completed the green LED stays off As soon as both keys are pressed the green LED switches on and the keypad returns in the main menu VFO toggle This is a single press operation on the A key The radio toggles between VFO A and VFO B This simple control is a good way to check whether your keypad radio setup is working properly VOX toggle This is a single press operation on the D key The VOX setting is toggled between on and off This function is active independently of your current operating mode but the new VOX status will be available and shown on the display only when using voice modes Please note that this command requires an interactive communication between the keypad and the radio In order to minimize communication errors the microcontroller has been programmed to introduce up to 200ms of combined delays Once the red LED blinks meaning that the key press has been read wait 200ms before expecting a change on the radio If nothing happens for one second try the command again If nothing ever happen
19. ons keyboards also used them but some plug modification is required These cables offer the safety and ruggedness of a molded plug Doc v 20100916p 25
20. s please contact the Support NB the CAT command sequence laying beside this control applies to FT817 s only Doc v 20100916p 12 IK1ZYW Keypad for FT 817 public firmware Meter functions The FT817 can measure output power SWR ALC level and modulation level A single press on the B key will cycle between these 4 settings as if the function was accessed on the front panel menu The meter operating mode will be shown only when the radio is set to transmit Please note that this command requires an interactive communication between the keypad and the radio In order to minimize communication errors the microcontroller has been programmed to introduce up to 200ms of combined delays Once the red LED blinks meaning that the key press has been read wait 200ms before expecting a change on the radio If nothing happens for one second try the command again If nothing ever happens please contact the Support NB the CAT command sequence laying beside this control applies to FT817 s only Power level The FT817 has 4 power levels A single press on the C key will cycle downwards between these 4 settings as if the function was accessed on the front panel menu The change is visible on the radio display Please note that this command requires an interactive communication between the keypad and the radio In order to minimize communication errors the microcontroller has been programmed to introduce up to 200ms of combined
21. s being completed the green LED stays off As soon as 6 keys are pressed or a non digit key is hit the green LED switches on and the keypad returns in the main menu Some dial examples Type QSYs to 007000 7 000 MHz 007 or 007A or 007C or 7 000 MHz 014200 14 200 MHz 0142 or 14 200 MHz 145500 145 500 MHz 1455B or 145 500 MHz 4322 or 432 200 MHz 221000 Ignored 221 0 MHz 070100 Ignored 70 1 MHz Onboard memories Up to 15 onboard frequency mode memories can be programmed in the keypad hardware The frequency mode information is read from the currently selected VFO or whatever is currently in use i e what is shown on the display and stored in a permanent memory area of the keypad Presets will survive keypad power off and long term storage since they are stored in EEPROM cells In order to program an onboard memory you have to press followed by and then the key corresponding to the desired memory location Once the memory location is written the keypad turns on the red LED with a longer flash twice as a key press Onboard memories are accessed with two key strokes key where key is the one chosen during the programming process Since the key is used for programming you cannot assign it a value actually you can but you ll not be able to retrieve it Note that after pressing ff the green LED goes off if installed until a m
22. sted on This keypad has been developed on a FT817ND I Italian version with serial number SHOOxxxx The keypad firmware uses both CAT commands from the User s Manual and Internet pages detailing the extended command set for FT817 serial number 1D21 Given the combination above there are good chances that this keypad will work on all FT817 ND worldwide Reports of working keypad on your flavour of FT817 are welcome Doc v 20100916p 7 IK1ZYW Keypad for FT 817 public firmware How it works This keypad is operated through the 4x4 matrix keyboard Several functions are programmed in the microcontroller and are accessible via one or more key press as detailed further down The keypad waits for a key press that initiates a command input sequence the green LED is lit if installed Each key press is confirmed by a short blink of the red LED if installed and the green LED goes off when the keypad is waiting for further input before sending data to the radio Once the sequence is complete the keypad microprocessor sends the appropriate command to the radio which should react accordingly and the green LED lights up Each key press is subject to 50 milliseconds of debounce and 200 milliseconds of repeat delay Keeping a key pressed longer than 250 milliseconds is equivalent to a second press These values have been found to be a reasonable compromise between dial speed and dial accuracy In order to minimize RFI and data corruptio
23. u might want to start using your keypad as soon as possible Follow the following steps in order to get started Steps 1 to 4 can be done before your keypad is built or in your possession 1 Do NOT connect the keypad to the radio YET 2 Turn on your FT 817 long press the F button navigate to 14 CAT RATE using the SEL rotary switch and set it to 4800 baud Long press F again to store this setting 3 Turn off the transceiver 4 Optional but strongly recommended Record the soft calibration settings that are exclusive for your piece of equipment Keep A B and C buttons pressed while turning on the FT 817 Browse through all setting using SEL rotary switch and record on paper their value Make copies of the paper and put them in the safe Turn off the FT 817 as usual 5 Remove ALL power sources including the internal battery if your keypad does not carry an on off switch 6 Connect the keypad to the rear ACC socket Be gentle and patient do not force it 7 Looking at the keypad LED if installed apply power to the radio and keypad ie switch on the power supply and the on off switch if installed the LED should blink Also the green status LED should light up if installed 8 Switch on your FT 817 and go to VFO A 9 Press the A button on keypad and observe the change in VFO if your firmware carries this function 10 Enjoy Doc v 20100916p 6 IK1ZYW Keypad for FT 817 public firmware Te
24. x the FT 817 back 22p En OS keypad oe c2 columns cl al 470R Red Sa IVOR FT817 Keypad v090210 Z All rights reserved 5V 5V Md ic Paolo Cravero IKl1ZYW rs a oroS m Illustration 1 schematic diagram and wiring to ACC port Currently there is no physical PCB available for this keypad PCB artwork in Eagle format has been drawn and is available on explicit request Anyway the circuit is so simple that it can be assembled on veroboard perfboard There are also no strict ground requirements With respect to previous circuit version these are the changes The reset button has been removed If an on off switch is installed their effect would have been the same since the microprocessor is ready in few microseconds in both cases A green LED has been added to show the keypad is both powered and idle waiting for a key press to start a command input sequence This LED is optional Do use a socket for the microcontroller IC so that you can re program it one day Or easily replace it in case of unexpected destructive conditions Pay attention to LED orientation whose cathode is always towards the IC An incorrectly installed LED will work the other way around as described here rather than blinking on the red LED would blink off at key presses Use short connections but don t go crazy with them a 5x5cm board holds all these parts just right Parts list is as follows Quantity Part Na
Download Pdf Manuals
Related Search