I owed you guys (and girls) some pics!
First the big surprise: this ESC that was well known to be easily reprogrammable to brushless seems to have changed from architecture recently. So no AtMega-8A anymore and no clue (for me at least) on how to flash this thing, although flashing 'points' are present on the PCB. But hey, the Pi Zero is alive at least!
![[Image: IMG_0700.jpeg]](http://marijn.cloudaccess.host/wp-content/uploads/2019/06/IMG_0700.jpeg)
![[Image: IMG_0722-e1560273693243.png]](http://marijn.cloudaccess.host/wp-content/uploads/2019/06/IMG_0722-e1560273693243.png)
Time to hook up more stuff to the Pi! Visuals first, of course..
![[Image: IMG_0727.jpeg]](http://marijn.cloudaccess.host/wp-content/uploads/2019/06/IMG_0727.jpeg)
![[Image: IMG_0725.jpeg]](http://marijn.cloudaccess.host/wp-content/uploads/2019/06/IMG_0725.jpeg)
Well, that was quite easy, let's try the motorcontroller part (unfortunately without ESC yet). First a clean picture, this is an Arduino Pro mini with rudder pot, rudder limit switches, shunt (the big white resitor) and the voltage dividers for shunt and voltage measuring hooked up to it:
![[Image: 0EDA9B31-EEFD-4A20-8435-801370DDB38A.jpg]](http://marijn.cloudaccess.host/wp-content/uploads/2019/06/0EDA9B31-EEFD-4A20-8435-801370DDB38A.jpg)
Then just hook it up to the Pi via an isolator, hook up the IMU, some buttons and a buck-converter as well and you suddenly have this mess:
![[Image: IMG_0733.jpg]](http://marijn.cloudaccess.host/wp-content/uploads/2019/06/IMG_0733.jpg)
But hey, we're getting somewhere! Arduino and Pi can talk with eachother as long as I don't put the ADUM1201 isolator in between. That will hopefully be fixed by adding some pull up resistors.
The not-functioning-yet IMU is more of a headache though. Can anybody provide me some hints on how to check I2C communication on TinyCore Linux through SSH? The 'normal' I2C-tools aren't present. And the initial IMU-calibration, eg. factory calibration, which is available through OpenPlotter, is there any option to perform that procedure at the TinyPilot terminal as well?
First the big surprise: this ESC that was well known to be easily reprogrammable to brushless seems to have changed from architecture recently. So no AtMega-8A anymore and no clue (for me at least) on how to flash this thing, although flashing 'points' are present on the PCB. But hey, the Pi Zero is alive at least!
Time to hook up more stuff to the Pi! Visuals first, of course..
Well, that was quite easy, let's try the motorcontroller part (unfortunately without ESC yet). First a clean picture, this is an Arduino Pro mini with rudder pot, rudder limit switches, shunt (the big white resitor) and the voltage dividers for shunt and voltage measuring hooked up to it:
Then just hook it up to the Pi via an isolator, hook up the IMU, some buttons and a buck-converter as well and you suddenly have this mess:
But hey, we're getting somewhere! Arduino and Pi can talk with eachother as long as I don't put the ADUM1201 isolator in between. That will hopefully be fixed by adding some pull up resistors.
The not-functioning-yet IMU is more of a headache though. Can anybody provide me some hints on how to check I2C communication on TinyCore Linux through SSH? The 'normal' I2C-tools aren't present. And the initial IMU-calibration, eg. factory calibration, which is available through OpenPlotter, is there any option to perform that procedure at the TinyPilot terminal as well?