A bit OT for your comment but I couldn't find an Email address for you. Someone mentioned to me you are looking for details to program an Icom U101. From memory, this uses the same method as the Icom ic H10. It may be worth searching for details for the H10- I believe they were more common. In fact, I'm sure I've programmed an H10 in the past for someone else. Unfortunately, over the years, I've programmed many radios and the details escape me at the moment 73 Brian, G8OSN www.g8osn.net
Thanks Brian, I'd given up trying to find software to program it, looks like there's DOS software for the H10 so I'll try and work out which one and then obtain it.
Plans are to test the radio on 70cm, once I know it works properly I've got 'ideas' for it.
A quick update, I needed a heatsink so I found one from an old PC which is more than adequate, weighing in at almost 650 grammes I reckon it should be able to handle the heat. Problem though, it's not flat. Which makes it kind of difficult to mount the board. Now, I could use some standoffs, PCB pillars cut to length but I'm a little light on machine tools to make an accurate job of it and it'd annoy me that it was 'wobbly'. As it happens, I recently bought myself a new toy. A Flashforge 3D printer so this seemed an ideal opportunity to learn to use a CAD program and find out how dimensionally accurate the printer is. It turns out, it's pretty good. And the PLA takes a thread really nicely. So, my Mini PA board now has mounts, I just need to drill and tap some holes in the heatsink.
Place holder for GQRP SCD Digital VFO Post The chip shortage has struck down the Teensy 3.2 which was used in the GQRP Digital VFO here: https://www.gqrp.com/suddenvfo.htm Obviously that's a problem. However, there is light at the end of the tunnel, the Teensy 4.0 is pin compatible so could be a drop in replacement. I downloaded the 'sketch' and tried to compile it, which failed with what looked like potentially simple to resolve errors and a *lot* of warnings about unused and uninitialised variables. The information below shows the changes I made to the V0_13 sketch and get a successful compile. Compiled for Teensy 4 using Arduino IDE: Version: 2.1.0 Date: 2023-04-19T15:31:10.185Z CLI Version: 0.32.2 Errors with unmodified sketch when compiled for Teensy 4 "Sorry, i2c_t3 only works on Teensy LC and 3.x. Use Wire for Teensy 4.0, 4.1, MicroMod." To fix: Change every instance of i2c_t3.h to wires.h In: SCD_2021_V0__13.ino Si53...
First thing I should say, this is my 'design' and I offer no guarantee that it will work for you, be careful if you build one, do your own testing to be certain it's not going to blow up your laptop and or radio, cause a rift in space time and the instant destruction of the entire universe as we know it. OK, guff out of the way, the Opto Isolated CI-V Interface I mentioned earlier, And the schematic! It's rough, hand drawn and there have been a couple of changes to component values, mainly because I found a document that suggests the CI-V interface port on the radio shouldn't have to sink more than 2.5mA, so one resistor has been changed (the 680R on pin 2 of the right hand side opto is now 2K) and another removed completely (the pull up on pin 5 of the left hand side opto) to comply with that. If I short the CI-V line with my ammeter, I get this: 1.6 milliamps, I'm comfortable with that. Currently (yeah yeah) it works reliably as a serial loop...
Hi Clint,
ReplyDeleteA bit OT for your comment but I couldn't find an Email address for you. Someone mentioned to me you are looking for details to program an Icom U101. From memory, this uses the same method as the Icom ic H10. It may be worth searching for details for the H10- I believe they were more common. In fact, I'm sure I've programmed an H10 in the past for someone else. Unfortunately, over the years, I've programmed many radios and the details escape me at the moment 73 Brian, G8OSN www.g8osn.net
Thanks Brian, I'd given up trying to find software to program it, looks like there's DOS software for the H10 so I'll try and work out which one and then obtain it.
DeletePlans are to test the radio on 70cm, once I know it works properly I've got 'ideas' for it.