Thanks richb and thanks to ralphfcooke.
It would indeed be interesting to integrate the third phase into the project, if possible, rather than adding a board. So we will wait for a rainy day...
OK so despite it not raining at the moment I got curious......
I had to save one of the traces as I only have a 2ch 'scope, but this is all 3 phases running simultaneously.
I have some work to do on storing the values to EEPROM and updating the control interface, but this is proof of concept at least
I had to save one of the traces as I only have a 2ch 'scope, but this is all 3 phases running simultaneously.
I have some work to do on storing the values to EEPROM and updating the control interface, but this is proof of concept at least
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Here's the 3-phase 'stack'!
More by luck than judgement, it has worked out very straightforward to add a second board for the third phase - only the 'upper' channel is populated, with its input connected across to the re-purposed GEN output on pin10, and using low-profile or horizontally-mounted capacitors for clearance to the top board. The unused channel of the OPA2134 is connected with unity feedback to prevent any switching due to noise. The top board is the completely standard build as for a 2 phase generator.
It works as per the previously posted 3-phase output. I will produce a unified firmware that works for both 2 and 3 phase outputs and post here when available.
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Hello Richard,
Very well done and quickly. Do you still have boards available ? If so, I would like two.
Another question : if you completely remove the HA-06 after tuning, isn't it possible to add a small 7-segment LED display with a TM1637 board ? I find the bluetooth solution very modern and easy, but I would like to have a small display near the start button to check directly if the system is working well (for peace of mind).
Very well done and quickly. Do you still have boards available ? If so, I would like two.
Another question : if you completely remove the HA-06 after tuning, isn't it possible to add a small 7-segment LED display with a TM1637 board ? I find the bluetooth solution very modern and easy, but I would like to have a small display near the start button to check directly if the system is working well (for peace of mind).
Build guide and latest 2 or 3 phase firmware
Here is the latest firmware that supports 2 or 3 phase sinewave generation plus updated tuning interface, along with a build guide for the project covering the PCB build, firmware installation and interface, plus a BOM.
Here is the latest firmware that supports 2 or 3 phase sinewave generation plus updated tuning interface, along with a build guide for the project covering the PCB build, firmware installation and interface, plus a BOM.
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Hi, thank you. I still have a few left from my initial batch, please PM me.
Yes it should be possible; the tachometer was integrated into the sinewave generator as an 'add-on', having previously been using a stand-alone tachometer with its own display. When integrated, as the Arduino has only one hardware serial port, I kept this for the BT interface. There are many other display options that could be added, but for this project I currently don't wish to go down that route; as the firmware is freely shared you're welcome to do your own development for other features
Hi, it doesn't have a variable amplitude feature as is uses a fixed amplitude sinewave lookup table, sorry!
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I've put together an easy to build amplifier suitable for driving my 24v Rega motor from the sinewave generator, and it works very nicely. Shown here is a 2 channel prototype, powered from the standard Rega AC adapter.
There are of course many options for this, but if it's of any interest then details are in this thread.
There are of course many options for this, but if it's of any interest then details are in this thread.
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Yes, the prototype shown above was running from the Rega AC adapter. Should also be able to power the sinewave generator from the DC out from the amplifier using a step-down converter, I'll try this out.
That's great you're up and running! No problem.
Once I get the PCBs and get one made up and tested, all being well I can share the spares and Gerbers.
I built one of these using the proto board, without tach. It was running fine about a month ago. I bought some of the PCBs using the Gerbers and assembled one today.
Now, neither is working. I can find the HC06 on the bluetooth scan on the pone but it doesn't show up in the RemoteXY app so I can't pair it. I can pair in the bluetooth setup but it still doesn't show up in the RemoteXY app. I thought perhaps it was a problem with the RemoteXY app so I uninstalled it. Now I can't even find the PRO version to reinstall.
Any suggestions will be appreciated.
Now, neither is working. I can find the HC06 on the bluetooth scan on the pone but it doesn't show up in the RemoteXY app so I can't pair it. I can pair in the bluetooth setup but it still doesn't show up in the RemoteXY app. I thought perhaps it was a problem with the RemoteXY app so I uninstalled it. Now I can't even find the PRO version to reinstall.
Any suggestions will be appreciated.
My first thought is, is it exactly the same HC-06 module as you used before, or a different one? The app uses it's MAC address, so if a different module you can't use the existing 'connection' in RemoteXY and will have to create a new one.
I don't know if you're Android or iOS, I've just looked in the Android Play store, and indeed the PRO version seems to have disappeared. I also notice the free version had an update on 8th March this year - I wonder if the free version will now support more than 5 interface elements, which was the limit before needing the PRO version. Can you try the free version and see if this is the case, if you can successfully troubleshoot your connection issues?
I don't know if you're Android or iOS, I've just looked in the Android Play store, and indeed the PRO version seems to have disappeared. I also notice the free version had an update on 8th March this year - I wonder if the free version will now support more than 5 interface elements, which was the limit before needing the PRO version. Can you try the free version and see if this is the case, if you can successfully troubleshoot your connection issues?
That's odd, sorry I've never had a similar issue.
Just seen this posted today on the community forum, looks like the PRO version will be back soon:
Re: pro version gone from play store, how to update?
Sorry. It's a nuisance from Google.
Google unexpectedly decided to test the app and now it doesn't follow the Developer Program Policie.
We've made some fixes. Waiting for application verification
Just seen this posted today on the community forum, looks like the PRO version will be back soon:
Re: pro version gone from play store, how to update?
Sorry. It's a nuisance from Google.
Google unexpectedly decided to test the app and now it doesn't follow the Developer Program Policie.
We've made some fixes. Waiting for application verification