User Tools
builds:ict
Differences
This shows you the differences between two versions of the page.
|
builds:ict [2017/09/25 14:10] poleguy |
builds:ict [2018/07/21 13:45] (current) poleguy [Specifications] |
||
|---|---|---|---|
| Line 6: | Line 6: | ||
| ====== Phantom ICT ====== | ====== Phantom ICT ====== | ||
| - | {{:builds:ict:ICT_2016-09-03.jpg?direct&450|}}\\ | + | {{:builds:ict:ICT_Face_Off.PNG}}\\ |
| //"Although there are other Ice Cream Trucks that have raced in PRS, the Phantom ICT is inspired by audio... specifically the sound of traditional Ice Cream Truck music... You'll here it before you see it..."// | //"Although there are other Ice Cream Trucks that have raced in PRS, the Phantom ICT is inspired by audio... specifically the sound of traditional Ice Cream Truck music... You'll here it before you see it..."// | ||
| Line 16: | Line 16: | ||
| ===== Specifications ===== | ===== Specifications ===== | ||
| - | Motor: Alternators, broken, junkyard, $10 each\\ | + | Motor: [[Alternators|Alternators]], broken, junkyard, $10 each\\ |
| ESC/ECU: Custom Phantom Power Racing Controller, running on a Xilinx Spartan 3e FPGA, $priceless\\ | ESC/ECU: Custom Phantom Power Racing Controller, running on a Xilinx Spartan 3e FPGA, $priceless\\ | ||
| Battery A: 36V LiFe, shared with Phantom #48\\ | Battery A: 36V LiFe, shared with Phantom #48\\ | ||
| Line 62: | Line 62: | ||
| Everything was built with a Harbor Freight band saw, a drill press, and precision measuring tools. (Excluding the extremely precision machining done for the spinny bits by Union Area Man in his Pole Barn.) | Everything was built with a Harbor Freight band saw, a drill press, and precision measuring tools. (Excluding the extremely precision machining done for the spinny bits by Union Area Man in his Pole Barn.) | ||
| + | |||
| + | The body of ICT was built out of corrugated plastic board. | ||
| + | {{:builds:ict:ICT_2016-09-03.jpg?direct&450|}}\\ | ||
| ==== Rapid Unscheduled Electrical Disassembly (Days before Milwaukee 2016)==== | ==== Rapid Unscheduled Electrical Disassembly (Days before Milwaukee 2016)==== | ||
| Line 130: | Line 133: | ||
| ==== Over-current tripping ==== | ==== Over-current tripping ==== | ||
| I adjusted the motor controller code to prevent nuisance tripping of the over-current protection. Basically I dropped the amount of current I was trying to draw, and bumped up the point at which I trip the over-current protection. | I adjusted the motor controller code to prevent nuisance tripping of the over-current protection. Basically I dropped the amount of current I was trying to draw, and bumped up the point at which I trip the over-current protection. | ||
| + | |||
| + | Maybe more important though is I adjusted the calculation of current from the sinusoidal waveforms. The angle used as the reference for driving the motors is now different in forward vs reverse and the current measurement offset is also in the opposite direction in forward and reverse. I'm not an expert on this, but it does seem important, as the current to voltage relationship of the wavefroms varies depending on which direction you are going and weather you are driving forward or in regen, but it seems the current you care about is only really at one angle. Anybody care to explain this to me, I'm all ears. | ||
| To make this happen I spent some time connecting the [[https://en.wikipedia.org/wiki/ESP8266|ESP8266]] wifi module to replace USB serial port. That allowed wireless telemetry. I set up a WRT54G Linksys access point mounted in the car to relay the data to my phone, and then from there to a log file on the phone that can be sent to my email via the app. | To make this happen I spent some time connecting the [[https://en.wikipedia.org/wiki/ESP8266|ESP8266]] wifi module to replace USB serial port. That allowed wireless telemetry. I set up a WRT54G Linksys access point mounted in the car to relay the data to my phone, and then from there to a log file on the phone that can be sent to my email via the app. | ||
| Line 137: | Line 142: | ||
| ==== The other side ==== | ==== The other side ==== | ||
| I completed the angle sensor bracket for the other side. Unfortunately I still only have one motor controller working, so I just swapped for testing and once I saw that it worked I took off the extra parts to save weight. | I completed the angle sensor bracket for the other side. Unfortunately I still only have one motor controller working, so I just swapped for testing and once I saw that it worked I took off the extra parts to save weight. | ||
| + | |||
| + | ==== July 2017: Detroit ==== | ||
| + | We brought Phantom 48 and Phantom ICT both out to Detroit. This was the inauguration of the speed changing music. It seems like it would be difficult, but it's not so bad, written as an Android App that takes the speed from GPS and adjusts the playback rate of the music. The output is simply a set of Bluetooth motorcycle speakers from Amazon. | ||
| ==== September 2017 ==== | ==== September 2017 ==== | ||
| Line 143: | Line 151: | ||
| Due entirely to Moxie, Phantom ICT achieved third place over-all for the Milwaukee Weekend! | Due entirely to Moxie, Phantom ICT achieved third place over-all for the Milwaukee Weekend! | ||
| [[https://docs.google.com/spreadsheets/d/1ZJ7wFpz4KMm6QfyKbLwCywGJpuw_OAG5GS2mDW5VMvo/edit?usp=sharing|Points Spreadsheet]] | [[https://docs.google.com/spreadsheets/d/1ZJ7wFpz4KMm6QfyKbLwCywGJpuw_OAG5GS2mDW5VMvo/edit?usp=sharing|Points Spreadsheet]] | ||
| - | |||
| ==== Where should I go next? ==== | ==== Where should I go next? ==== | ||
| + | * Rework the steering. | ||
| * Retire from racing to focus on the electric Civic? | * Retire from racing to focus on the electric Civic? | ||
| * Create a new motor controller or fix the old one to got both sides going. | * Create a new motor controller or fix the old one to got both sides going. | ||
builds/ict.1506366603.txt.gz ยท Last modified: 2017/09/25 14:10 by poleguy
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 3.0 Unported
