#avr Logs

Apr 01 2017

12:17 AM Emil: Casper: isnt it lovely how fucktards like Smidge204 come, demanding for help and then are idiots
12:23 AM Casper: yup
12:26 AM daey_ is now known as daey
12:45 AM Tom_L: ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................
12:45 AM Tom_L: woops
12:54 AM rue_shop3: :)
12:57 AM Casper: Tom_L: blame the cat!
12:58 AM Casper: or DYK
02:16 AM polprog: Emil: imo he was some special kind and he just wanted to show off
02:16 AM polprog: he was also new i thinl
02:17 AM polprog: think* . notice how he uses full names of chips ;)
03:31 AM Emil: I think I've seen him before
05:02 AM Snert_ is now known as Snert
05:25 AM polprog: i pulled some li-ions recently from a dead laptop battery
05:25 AM polprog: some of them have 0.01v and i think those are dead, but some have around 0.6-0.8V
05:26 AM specing: polprog: charge em
05:26 AM specing: at cca 25 mA
05:27 AM specing: or lower
05:28 AM polprog: i'm researching this righ now and adafruit has some board for charging lions. that board is nothing more that some IC and a couple passives
05:29 AM Emil: polprog: you pulled li-ion batteries that have <1V?
05:29 AM Emil: Dead
05:29 AM Emil: all of them
05:29 AM polprog: one of them is .8V
05:29 AM Emil: Dead
05:29 AM Emil: that's less than 1V
05:29 AM polprog: :(
05:30 AM Emil: If they go below 2.5V you can just throw them out
05:30 AM polprog: i have a couple of other laptop batteries
05:30 AM polprog: ill open them later
05:31 AM specing: polprog: do you have a linear lab psu?
05:31 AM polprog: not yet
05:32 AM polprog: but i have a small current CCS
05:32 AM specing: or any lab psu where you can set max current and max voltage
05:32 AM polprog: and a big one too
05:32 AM Emil: specing: there is no way those batteries can be revived
05:32 AM specing: polprog: and buy a SkyRC IMAX B6 from china, the original one
05:32 AM specing: Emil: thats what she said (tm)
05:33 AM Emil: polprog: if you have a CCS just set the max current to what is needed and give it the max voltage required
05:33 AM Emil: It works the same
05:33 AM polprog: Yeah, that's the plan
05:33 AM specing: lab psus are basically CC/CV chargers
05:34 AM Emil: specing: is there even any people of the opposite sex?
05:34 AM polprog: i guess so, there's nothing more that could be done in the field of lab psu tech
05:35 AM specing: Emil: doubt it
05:56 AM polprog: the two that had considerably higher voltage seem so hold charge
05:56 AM Emil: mfw I have to explain to people that 0.1 does not exist in IEEE 754
05:56 AM Emil: And they reply like
05:57 AM Emil: Norrin> the fix is give print what he wants
05:57 AM Emil: < Norrin> ie: when your problem occurs, is the float already incorrect when it's given to the function?
05:58 AM Emil: < Norrin> Emil, the number that would be neat is the number that he's looking for
05:58 AM Emil: God fucking damn I wish I could punch that fucktard retard in the face
06:02 AM polprog: floats are evil
06:02 AM polprog: https://www.h-schmidt.net/FloatConverter/IEEE754.html
06:02 AM polprog: it's true 0.1 can skew a bit
07:42 AM Emil: polprog: alllllll 10^-n are problematic
07:42 AM Emil: and many others, too
07:43 AM DKordic: Check out http://0.30000000000000004.com/ :) .
07:47 AM Lambda_Aurigae: this a pentium 60 division issue?
07:49 AM DKordic: No, just usual rounding errors.
07:50 AM Lambda_Aurigae: I am pentium of intel. Division is futile. You will be approximated!
08:01 AM polprog: Lambda_Aurigae: Error inside
11:11 AM LeoNerd: Ugh.. why does everybody suck? Today looking for some sample C code for a TLC5940. It seems, despite the AVR having a perfectly useable SPI module, almost everybody does bitbanging instead :(
11:11 AM LeoNerd: Then also, the thing needs a fast clock. AVR has a CLKO pin.. does anyone use it? Not very much - most seem to set up a fast PWM timer into toggle mode instead.
11:12 AM polprog: that's odd as hell, the SPI is extremely easy
11:12 AM polprog: if you can read
11:13 AM Casper: there is lots of weird thing, in part due to the arduinono stuff
11:13 AM Casper: people want to be able to use any pin, and prefer a software headache than an hardware pinch
11:13 AM LeoNerd: Maybe it's because the chip uses 12bit values
11:14 AM LeoNerd: Because perhaps turning 2 12s into 3 8s is hard? ;)
11:14 AM polprog: i inteface a maxim thermocouple sensor that returns 32 bit payload and that's just a couple of shifts...
11:14 AM polprog: maybe they don't know you can turn 12s into 8s
11:16 AM polprog: :>
05:46 PM polprog: how nice, a full service manual for a thibkpad 600x
05:46 PM polprog: lab computer finally
05:55 PM specing: ?_? there are full service manuals for most thinkpads
05:55 PM specing: I even have motherboard schematics for mine
05:59 PM polprog: mobo schematics? wow that would be interesting
05:59 PM polprog: how big is it?
06:02 PM specing: 101 pages, 1MB
06:03 PM specing: also you can download service manuals straight from lenovo.com on the support page
06:03 PM specing: its unrestricted access
06:03 PM polprog: thats nice of them
06:03 PM specing: well, how else is company IT going to service fleets of thinkpads?
06:04 PM polprog: i always wanted a thinkpad... its probably gonna be my next laptop
06:04 PM polprog: that makes sense
06:04 PM specing: I have two thinkpads
06:04 PM specing: both same model
06:05 PM Lambda_Aurigae: I have a lenovo flex 3 that I like quite a bit.
06:05 PM polprog: i have the same laptop my dad has
07:39 PM Jan-: hihi
07:40 PM Jan-: if anyone has any experience with the nrf24l01 you may be able to help
07:40 PM Jan-: I have a situation where I'm trying to transmit, there is no receiver so we're expecting it to time out. it's reporting a number of retries equal to the max retries setting.
07:41 PM Jan-: but it never increments the "lost packets" count