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| 14:03.33 | true-grue | Hi all! Is there a channel about ... old-school embedded programming? I mean not Linux involved :) |
| 14:05.43 | g1powermac | true-grue, there is ##microcontrollers, though its a bit slow this time of day |
| 14:06.05 | true-grue | g1powermac: Thank you! |
| 14:06.16 | g1powermac | ya welcome |
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| 22:10.00 | andyroid | Which is better fo controlling a car by radio from your smartphone. Bluetooth or wifi? Is it possible you think to grt good control |
| 22:19.54 | brianjaod | like everything, it depends. :) BT and wifi could work great. BT is a direct point to point connection, whereas wifi is over a network. BT has limited range, but wifi may also, depending on your network size. lots of factors to consider |
| 22:21.34 | brianjaod | "better" is always relative |
| 22:22.51 | andyroid | Wifi is more expensive? |
| 22:23.28 | andyroid | <PROTECTED> |
| 22:23.56 | brianjaod | sometimes, but not necessarily. there are a lot of different BT and wifi modules out there, all with different specs. it's hard to generalize anything |
| 22:25.09 | brianjaod | you need to ask questions like: cost of development time, expected annual quantities, etc |
| 22:25.32 | brianjaod | are you developing a commercial product or is this just a hobby thing? |
| 22:26.48 | andyroid | Hobby. Only 1 unit. Rebuild old radiocar |
| 22:31.15 | brianjaod | you can get BLE modules for in the $15 to $30 range, depending on specs. Same with wifi. Most BT and wifi modules communicate via SPI, I2C, or UART lines to another micro. |
| 22:32.05 | SpeedEvil | The annoying thinc can be that many wifi things don't do wpa2/... onboard |
| 22:32.10 | SpeedEvil | so watch out for that |
| 22:32.30 | SpeedEvil | And then there are protocol level fuckups |
| 22:32.48 | SpeedEvil | Like android now not doing ad-hoc wifi which can be great for this |
| 22:38.28 | andyroid | Ok so maybe bt is better. Oh well i will look into it. But do yiu think the comm is fast enough to do it? Phone being predictable enough? |
| 22:39.07 | SpeedEvil | andyroid: bluetooth mouse |
| 22:41.25 | brianjaod | either should be plenty fast enough. if you go wifi, i'd suggest sending udp packets |
| 22:42.41 | SpeedEvil | Unless you get a module that can pretend to be an AP - you can't do that with andoid phones |
| 22:42.48 | SpeedEvil | (non-rooted android phoneS) |
| 22:43.26 | brianjaod | speedevil: can't do what? udp? sure you can |
| 22:43.38 | SpeedEvil | I mean you can't connect to the device |
| 22:43.53 | SpeedEvil | Well - unless you connect it to a router as well |
| 22:44.15 | MonMotha | SpeedEvil: do you happen to know off the top of your head what the trade-name "Wi-Fi Direct" implies at an actual protocol level? |
| 22:44.23 | SpeedEvil | No |
| 22:44.37 | MonMotha | gah |
| 22:44.46 | MonMotha | actual technical information is unfortunately somewhat limited |
| 22:44.48 | SpeedEvil | I tried reading the wifi spec once. |
| 22:44.53 | SpeedEvil | My head exploded. |
| 22:44.55 | brianjaod | yes, that's what i was implying. your car's wifi module is connected to the network and your communicating to it like any other ip device, using udp |
| 22:44.55 | MonMotha | it appears to be a "one device acts as an AP" system |
| 22:45.16 | SpeedEvil | (I was looking for how the powersave stuff worked) |
| 22:45.26 | MonMotha | combined with mandatory WPS |
| 22:45.47 | MonMotha | SpeedEvil: oh yeah, that's one of the most complicated portions of the spec |
| 22:46.05 | MonMotha | "Wi-Fi Direct" is an trade industry de-facto thing; it's not IEEE standard |
| 22:46.10 | MonMotha | it builds on the IEEE standards, though |
| 22:51.37 | andyroid | Ap? |
| 22:53.54 | SpeedEvil | Access Point |
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