Jeff Weinmann

No buttons in my application. The clock did come with a PCB board with 3 buttons, but I've decided to go buttonless. My clock application is centered around data from a GPS module and I harded coded EST daylight savings right into code as I can sense dates as well as times. ebay has a nice 1638 board to tinker with. I have to say my interest in this driver has greatly increased ! https://www.ebay.com/itm/155044572762?hash=item2419606e5a:g:jy0AAOSwMVhir-Cc&amdata=enc%3AAQAHAAAAkHldm4k%2BQCNiX25Nq3iDzW8CXHxpQ8Z3aUqKYWzseyIVVO9n2qThcQWQ5ISokCduTgd9bi%2BMMpqjF7x3QRR4mGB53CQux5xYg1LfZ4fuX2tONkL9KiEZuZVPiHIWmA6zAD0KwnzxGp0lfyA4h2qHLvHt5LXhaFbJua8pRI7ZgLuOvx5sqLYSCKUJWcVqAIUcYA%3D%3D%7Ctkp%3ABk9SR5D35rfmYA...

Toni.G, Thanks for the code - I may check it out and test it when my PCB comes in. Right now my breadboard is serving up the time via GPS, and I don't want to mess with it while its working! Attached is the PCB that will replace my breadboard and make my old clock a real appliance lol. If it works as planned, I have 5 boards on order and can send you one for your project. I see the 1638 uses the STROBE line so I'm pretty sure you could use it in your projects. The board is based on the PIC18F16Q40...

For anyone who may find this useful: This code will save me a button for adjusting for Daylight Savings Time in my area. Most of the US observes Daylight Savings Time. It Starts Nov 6th and Ends March 13th. My UTC offset is -4 hours, so I convert this offset for my area, which is Eastern Standard Time. The conversion handles crossing over into the next day. So at 8pm my time Greenwich is at 12:am, or 00:00:00 So I derive the UTC time from the GPS sentence, and check to see if the current month/day...

Ok Another few days of staring at Datasheets and tinkering. I got the TM1628 to work, but it has a totally different mapping scheme the GCB and any existing library out there (Ardino) will not work. Here is my first pass at getting a functional program working. I may plan a pcb board of my own with a button to change the hour to +- daylight savings / Time zone adjustment. Right now its hard coded for Eastern Standard time so i will have to modify in a few weeks. It wasn't fun trying to get LEDs to...

Hello, I just got a hold of an LED Clock that is driven by the TM1628 LED driver chip. The clock board is VERY inaccurate. It looses about 15 to 20 seconds per day and find I have to adjust it after only a couple of weeks. My plan is to program a PIC to use GPS time for accuracy. The PIC to GPS code has already been figured out and all I have to do is drive the LED display. The cpu board that came with the clock is completely separate from the LED driver board. The two boards are connected by a convenient...

Hello, I just got a hold of an LED Clock that is driven by the TM1628 LED driver chip. The clock board is VERY inaccurate. It looses about 15 to 20 seconds per day and find I have to adjust it after only a couple of weeks. My plan is to program a PIC to use GPS time for accuracy. The PIC to GPS code has already been figured out and all I have to do is drive the LED display. The cpu board that came with the clock is completely separate from the LED driver board. The two boards are connected by a convenient...

I know the variable types : Single, Double and Float are 'experimental' in GCB. Has there been any further thought of implementing them for math operations (Multiplication, Division)? Below is code that works in VisualBasic.NET that derives the registers for the SI5351a clock generator. Mostly Unsigned 32 bit integers which GCB can handle, and a float variable (currently N/A in GCB). I have been told I could use Integer math to do the same thing, but at a loss on how to do it. ' Calc Output Multisynth...

Well that one flew over my head. The PICInfo Icon is now staring at me saying why didn't you start here? lol Very nice tool. thanks for the education. regards, Jeff