#qi-hardware IRC log for Sunday, 2016-03-13

arossdotmefor an rc battery lipo 4s 20ah 10C. should i get this protection board www.aliexpress.com/item/4S-20A-11-1V-li-ion-BMS-PCM-battery-protection-board-bms-pcm-for-lithium-LicoO2/32388217872.html?ws_ab_test=searchweb201556_3,searchweb201644_4_10001_10002_10005_301_10006_10003_10004_62,searchweb201560_8,searchweb1451318400_6150 or...03:53
arossdotmethis one that costs a bit more:03:53
arossdotmehttp://www.aliexpress.com/store/product/4S-21A-16-8V-li-ion-BMS-PCM-battery-protection-board-bms-pcm-for-lithium-LicoO2/1821822_32390052570.html03:53
arossdotmelooks like theres some differences. not sure what they mean03:54
arossdotmei dont think i need balancing build in? as i will only be using a balancing charger. or does the balancing circuity help keep the cells balanced when discharged? :/04:00
arossdotmehttp://www.aliexpress.com/item/4S-21A-16-8V-li-ion-BMS-PCM-battery-protection-board-bms-pcm-with-balancing-for/32388245579.html?ws_ab_test=searchweb201556_7,searchweb201602_2_505_506_503_504_10034_10032_10020_502_10001_10002_10017_10010_10005_10006_10011_10003_10021_10004_10022_10009_10008_10018_10019,searchweb201603_8&btsid=da976bea-c3ab-4a0f-a3b3-ec431d1bd80704:00
DocScrutinizer05arossdotme: yes, balancing also on discharge helps a lot, though in this case it's more the per-cell undervoltage monitor + cutout 10:30
DocScrutinizer05that does the trick10:30
DocScrutinizer05the balancing current is too low to actually help during high load discharge10:31
DocScrutinizer05in your last link you posted10:31
wpwraknow, let's see if i can get this voltage regulation redesign done. that stuff's been sitting on my desktop for the better part of three weeks by now. and each time i think i've covered everything i find something's i've overlooked :(16:11
eintopfgood luck :-/17:10
arossdotmeDocScrutinizer05, thanks muchly, feel ive been enlightened some more :)17:11
arossdotmemy discharge load is a few amps. 3-4A for my audio power amp, 3A for my rgb led light panel, 2-3or4?idk for my netbook17:14
arossdotmedepends on how many things are connected to it17:14
eintopfmy monitor still works fine17:25
whitequarkDocScrutinizer05: https://github.com/srsLTE/srsLTE18:07
DocScrutinizer05whitequark: wow, interesting18:40
wpwrakeintopf: let's hope that it'll have many good years of service life left :)19:19
eintopfwpwrak: I also try to working on short address stuff19:22
eintopfit worksa19:22
eintopfbut I did everywhere a /* TODO */ in ipv6 neighbor discovery...19:22
eintopfbecause it's not easy to make stuff there which is very specific to link-layer handling in a global upper layer implementation19:23
eintopfbut I think for 6lowpan we need an own neighbor discovery implementation anyway19:23
eintopfbut this is for future, first prepare the neighbor layer (which is used by arp/ipv6 neighbor discovery/ ALSO ATM YEAH!/etc...) to give me the neighbour_priv pointer when calling dev_hard_header19:24
eintopfand I hope they will accept it mainline19:24
eintopfpossible othersolution would be 1. backup skb->cb, 2. put pointer into skb->cb, 3. call dev_hard_header, 4. restore skb->cb19:25
eintopfbut this is bullshit19:26
wpwrakyeah, sounds very ugly19:26
eintopfI want it as parameter for dev_hard_header19:26
eintopfof course const19:26
eintopfbut I first want to make some use-case for short address handling in neighbor discovery cache of ipv6, then all people understands why I need that19:29
eintopfmeh, I watched alien at the tv while eating20:37
eintopfthe alien blobs out of the guy20:37
wpwrakwhile eating, it's best to watch "the meaning of life" by monty python, especially the restaurant scene.21:29
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