Lgbeno

Cool project, I did something very similar as well!
 
https://github.com/lgbeno/BLDC-Booster
 
There is software on there too that you are free to reference. It works with some exceptions. The method that I used for commutation is bemf integration similar to the ti instaspin approach. The issues that I had was that for very fast motors(>500Kv), I wasn't sampling the ADC fast enough to get the commutation timing right but for slow motors, it works great.
 
A few words of wisdom since I worked on this project for quite some time. I would recommend using the 28pin Tssop or qfn32 versions of g2553. Reason being is that it has 3 pins attached to ta1.1 which you can use for the high side pwm signals and 3 pins attached to ta1.2 to be used for low side pwm signals. This does 3 things, frees up timer 0 for something else, allows you to do dead time insertion (if your gate drivers don't already) and just makes your code easier too!
 
The other thing is that you will see your pwm super imposed on your bemf which will likely cause false trips of the comparator. To solve this, there's a low pass filter but that also introduces a dc offset that throws off your zero cross point.
 
Long story short, I came up with a different network that filters and then ac couples the bemf to the comparator. I was seeing pretty good results with that approach. Then I had to return my borrowed scope and have not been able to work on it. Good news is I'm getting a brand new Rigol DS2072 for keeps on Thursday.
 
Anyway I guess that is my project life story, hope it helps. Tomorrow ill try to dig up schematics with those improvements (not in github yet).
 
Btw the schematics are very inspired by the microkoptor.de schematics, mine are as well... I wonder how they got away with the pwm glitches in their software. Obviously theirs works quite well.

After a few years with the toaster ovens, I recently upgraded to this T-962 Reflow oven that I picked up on eBay for $184.
 
Not sure why I waited so long, I baked my first 3 boards printed with stencils from OSH Stencil and they turned out great. Highly recommended!
 
 

After a few years with the toaster ovens, I recently upgraded to this T-962 Reflow oven that I picked up on eBay for $184.
 
Not sure why I waited so long, I baked my first 3 boards printed with stencils from OSH Stencil and they turned out great. Highly recommended!
 
 

After a few years with the toaster ovens, I recently upgraded to this T-962 Reflow oven that I picked up on eBay for $184.
 
Not sure why I waited so long, I baked my first 3 boards printed with stencils from OSH Stencil and they turned out great. Highly recommended!
 
 

After a few years with the toaster ovens, I recently upgraded to this T-962 Reflow oven that I picked up on eBay for $184.
 
Not sure why I waited so long, I baked my first 3 boards printed with stencils from OSH Stencil and they turned out great. Highly recommended!
 
 

After a few years with the toaster ovens, I recently upgraded to this T-962 Reflow oven that I picked up on eBay for $184.
 
Not sure why I waited so long, I baked my first 3 boards printed with stencils from OSH Stencil and they turned out great. Highly recommended!
 
 

After a few years with the toaster ovens, I recently upgraded to this T-962 Reflow oven that I picked up on eBay for $184.
 
Not sure why I waited so long, I baked my first 3 boards printed with stencils from OSH Stencil and they turned out great. Highly recommended!
 
 

Hi Everyone,
 
I've been away from the forum for quite some time now. We just welcomed a third child to the family and work has also been very busy. People probably notice that analog.io has been sort of on the decline as well since I haven't been doing my best to keep up with all of the things changing inside Google Chrome.
 
Anyway, personal update is not the purpose of this post. I've always been a big fan of MSP430G2553 and Energia. I was recently forced to branch out and try Atmel SAMD11 using this kit: https://www.mattairtech.com/index.php/development-boards/mt-d11.html
 
At first it was a real struggle to get started. I loaded a bunch of examples in Atmel Studio and just stared at them puzzled. Their abstractions IMO are just over the top for configuring periphrials, I much prefer interacting with registers with the syntax that TI uses.
 
After about 3 days of cursing and scratching my head I finally think that I'm ramped up on the part and am now pretty excited about it. The experience has caused me to dig into the innards of Arduino more than I ever have in the past.
 
So with the pain behind me, There is so much about this part that is superior to old trusty G2553.
48MHz vs 16MHz
4k sram vs 512 bytes
USB
More serial channels (SERCOMS)
Multi channel DMA
Analog DAC
Faster ADC with decimation to get up to 16bit res
 
This interesting (at first frustrating) concept of an event system to route events between periphrials without CPU.
 
All of this and the price is lower or about equivalent to G2553.
 
On one hand I'm sad to move to a new goto part, on the other, I'm excited. Has anyone else gave it a try?

Yeah don't get me wrong, the event system is super cool, I'm sure with timers and ADCs and DAC you could construct some very clever systems that don't even need the CPU running.
 
My thing was that My first task was to use the timer for input capture. It took me awhile to wrap my head around needing to configure 3 separate peripherals to do this when I was anchored how how it was all built into the MSP430 timer.
 
For the record to do this you need to:
Configure the PORT to mux the pin to the EXINT controller
Configure EXINT controller to "generate" an event
Config EVSYS to route the event to the TC1 module
Configure the TC1 module to capture on this event
 
But with time there will be plenty of stack overflows on this topic. Right now it is early days.
 
Maybe there is a future where a chip like this replaces some of the hard logic components like SPI ADCs/DACs because it is cheaper and can be configures to sweep up a lot of stuff.

Hi Everyone,
 
I've been away from the forum for quite some time now. We just welcomed a third child to the family and work has also been very busy. People probably notice that analog.io has been sort of on the decline as well since I haven't been doing my best to keep up with all of the things changing inside Google Chrome.
 
Anyway, personal update is not the purpose of this post. I've always been a big fan of MSP430G2553 and Energia. I was recently forced to branch out and try Atmel SAMD11 using this kit: https://www.mattairtech.com/index.php/development-boards/mt-d11.html
 
At first it was a real struggle to get started. I loaded a bunch of examples in Atmel Studio and just stared at them puzzled. Their abstractions IMO are just over the top for configuring periphrials, I much prefer interacting with registers with the syntax that TI uses.
 
After about 3 days of cursing and scratching my head I finally think that I'm ramped up on the part and am now pretty excited about it. The experience has caused me to dig into the innards of Arduino more than I ever have in the past.
 
So with the pain behind me, There is so much about this part that is superior to old trusty G2553.
48MHz vs 16MHz
4k sram vs 512 bytes
USB
More serial channels (SERCOMS)
Multi channel DMA
Analog DAC
Faster ADC with decimation to get up to 16bit res
 
This interesting (at first frustrating) concept of an event system to route events between periphrials without CPU.
 
All of this and the price is lower or about equivalent to G2553.
 
On one hand I'm sad to move to a new goto part, on the other, I'm excited. Has anyone else gave it a try?

Ahh good old nrf24. The radio is capable of transmitting 32bytes of data so you might as well fill'er up before sending.
 
If curious there is also a fork of enrf24 for energia and g2553 that also will transmit BLE beacons:
https://github.com/analog-io/analog_io_lib
 
 
 
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This is awesome, really nice work!
 
Now it would be interesting to see a few more temp sensors scattered around the house to see how they lag the furnace temp
 
 
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I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

I was lucky enough to be a guest on the Amp Hour this week.  We talked mostly about analog.io but I made a special point to give a shout our to everyone here on 43oh!  @@bluehash, I hope it helps grow the user base!
 
http://www.theamphour.com/272-an-interview-with-luke-beno-of-analog-io/

But then again, you could detect when the kids swipe the entire dish and set off some fake police sirens
 
 
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But then again, you could detect when the kids swipe the entire dish and set off some fake police sirens
 
 
Sent from my iPhone using Tapatalk

Thanks everyone, I really appreciate it! Here's the task for the day: going to install new temp sensors into the bee hives.
 
 

 
 
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So I didn't make it to the next round, but thanks to everyone here on 43oh for the awesome support and help along the way!
 
I posted my update here with some thoughts: https://hackaday.io/project/4648-analogio-a-full-stack-iot-platform/log/26290-didnt-make-it-to-the-finals
 
In some ways it is a relief but would have been really cool to go all of the way.  I'm currently seeing if any of the finalists want to collaborate and use analog.io as their cloud data service, we'll see what happens next!
 
Also, in addition to the MSP430 Sensor node, I'm also finishing up an AVR based one.  Some people just really prefer Arduino and AVR, don't want to discriminate!
 
-Luke
 
 

So I didn't make it to the next round, but thanks to everyone here on 43oh for the awesome support and help along the way!
 
I posted my update here with some thoughts: https://hackaday.io/project/4648-analogio-a-full-stack-iot-platform/log/26290-didnt-make-it-to-the-finals
 
In some ways it is a relief but would have been really cool to go all of the way.  I'm currently seeing if any of the finalists want to collaborate and use analog.io as their cloud data service, we'll see what happens next!
 
Also, in addition to the MSP430 Sensor node, I'm also finishing up an AVR based one.  Some people just really prefer Arduino and AVR, don't want to discriminate!
 
-Luke