#garfield Logs

Jan 15 2020

12:38 AM zhanx: got on too late i guess
01:41 AM rue_bed: mhm
01:43 AM zhanx: rue_bed, sat internet installed
01:44 AM zhanx: still need to run a cat6 cable to a decent router to use it right
01:45 AM rue_bed: k
01:48 AM zhanx: got a hot water heater today
01:48 AM zhanx: cutting it up for a forge tomorrow :D
01:56 AM rue_bed: ,,,, didn't you already do that?
01:57 AM zhanx: not it was a bucket one before an want this one
08:35 AM rue_bed: so, they had the roads completely cleared up yesterday afternoon
08:35 AM rue_bed: and this morning is a blizzard
08:35 AM rue_bed: prolly gonna have a power outage today
08:36 AM rue_bed: zhanx_, wait SATILLITE?!?!
08:36 AM rue_bed: WTF
08:36 AM rue_bed: thought you were waiting on fiber
08:37 AM rue_bed: farm, no trenching tractor????
11:25 AM polprog: afternoon
11:25 AM polprog: zhanx_: tell me more about the sat internet
11:25 AM polprog: what speed do you get, what cost, what hassle
11:26 AM polprog: im considering setting one up for the summer house, or getting a portable kit
11:26 AM polprog: piss poor 3G coverage in a forest in the middle of nowhere
11:26 AM polprog: you may get HSPA if the planets align okay
11:26 AM polprog: hello Marl000
11:37 AM zhanx_ is now known as zhanx
12:13 PM Tom_L: blizzard doesn't mean you get to sleep all day...
12:14 PM Tom_L: polprog, you'd have to clear the forest to get a decent sat connection
12:14 PM polprog: hmm
12:15 PM polprog: could always elevate the receiver
12:15 PM Tom_L: and weather affects them alot
12:15 PM Tom_L: rain, snow etc
12:15 PM polprog: do you get uplink over satellite as well?
12:15 PM polprog: yeah, as with most higher frequency stuff
12:15 PM Tom_L: no, i'm on cable but have sat tv
12:15 PM polprog: microwave links also suffer from weather
03:35 PM polprog: hmm
03:35 PM polprog: i could put together one of the ft232s
03:36 PM Tom_L: you should
03:37 PM polprog: i mean, ive got maths exam tomorrow but i know the material, and i cant look at the other desk anymore
03:46 PM polprog: and done
03:46 PM polprog: 9 mins
03:46 PM polprog: :D
03:47 PM Tom_L: connect to the fpga too??????
03:47 PM Tom_L: :)
03:47 PM polprog: nah
03:47 PM polprog: need to make up the cable now
03:49 PM polprog: 08:00 PM rue_shop2: polprog, AD0 TCK, AD1 TDI, AD2 TDO, AD3 TMS
03:51 PM Tom_L: so there you have it
03:54 PM polprog: im 99 % sure CBUS0:3 are AD0:3
04:01 PM polprog: lol
04:01 PM polprog: the VCCON jumper actually powers the IC
04:01 PM polprog: not the pullups
04:07 PM polprog: the vccio is always 5v
04:07 PM polprog: hmm
04:07 PM polprog: wait, itd ok
04:07 PM polprog: its ok
04:15 PM polprog: ugh, recompiling openocd. at least that one builds easily
04:32 PM polprog: Error: unsupported FTDI chip type: 0x0600
04:32 PM polprog: fuck
04:32 PM polprog: this says FT232RL
04:34 PM polprog: looks like it doesnt support RL specifically
04:34 PM Tom_L: better get one like rue's
04:34 PM Tom_L: or that jtag i showed you
04:35 PM Tom_L: both of those work
04:53 PM polprog: hmm
04:53 PM polprog: ordered...
04:55 PM polprog: guess i have 1 more generic usb-uart then
04:55 PM polprog: useful
05:05 PM Tom_L: which one did you order?
05:06 PM polprog: the rue's one
05:07 PM polprog: https://www.aliexpress.com/item/32923720300.html
05:07 PM Tom_L: should do just fine
05:07 PM polprog: good
05:07 PM polprog: we'll see in 2 weeks then, heh
05:07 PM Tom_L: well, his works...
05:08 PM polprog: unless the altera usb blaster comes, that suppsoedly works with oocd
05:08 PM Tom_L: but will it work on xilinx chips?
05:08 PM polprog: meanwhile ill be probably trying to make the VFD driver
05:08 PM polprog: supposedly it does
05:09 PM polprog: >Altera USB Blaster Compatible JTAG Dongle
05:09 PM polprog: https://tomverbeure.github.io/2019/09/15/Loading-a-Spartan-6-bitstream-with-openocd.html
05:10 PM polprog: nighters
05:11 PM Tom_L: nite
06:45 PM rue_shop2: polprog, I have an altera one, but the instructions stopped before they showed how to use it
06:46 PM rue_shop2: I'd be interested, cause the spartin is the ONLY thing I can program right now with xc3prog
06:48 PM Tom_L: :)
06:48 PM Tom_L: another snow day?
06:50 PM rue_shop2: yea, it was clear enough last night
06:50 PM rue_shop2: and this morning was another storm
06:51 PM rue_shop2: I'm playing with circuits for a new front-end for the filter analizer
06:51 PM rue_shop2: cause, the stack of suggested improvements is getting a bit too high
06:51 PM rue_shop2: but so far, it looks like I need about 12 power rails
06:55 PM Tom_L: doesn't sound like an improvement to me
06:57 PM rue_shop2: the current circuit has distortion and drift issues
06:57 PM rue_shop2: not sure how much they matter
06:57 PM rue_shop2: I'm gonna check that channel alignment
06:58 PM rue_shop5: hahah
06:58 PM rue_shop5: testing the new circuit
06:58 PM rue_shop5: the reverse leakage current of a 1N914 is too much
06:58 PM rue_shop5: hahaha
06:58 PM Tom_L: you mentined drift on one of the channels
06:58 PM rue_shop5: yea
06:58 PM rue_shop5: one of the peak detectors is really badly drifting
06:58 PM rue_shop5: about 0.1V over a minute
06:59 PM Tom_L: aren't they the same?
07:00 PM rue_shop5: yes
07:00 PM rue_shop5: but this is a hyper touchy circuit
07:00 PM rue_shop5: 10M ohms is SUPER HIGH leakage
07:00 PM rue_shop5: like, in the context of things, instant error
07:01 PM rue_shop5: I'm using a 2n2222 in diode mode, and its holding
07:01 PM Tom_L: and you can't make a not so hyper circiut?
07:01 PM rue_shop5: on the first build of the current circuit, one of the opto isolator transistors was just leaking too much
07:02 PM rue_shop5: there is a touch balance between descently fast and hyper touchy
07:03 PM Tom_L: sounds like a race car
07:03 PM rue_shop5: the charge current source on this is 0.3mA, so it should take 50ms max to find the peak with 2uF sampling caps
07:03 PM rue_shop5: the existing one uses just a resistor to charge, but its overshooting sometimes
07:07 PM rue_shop5: 4.987V, 0.174V, 4.979V, 0.153V, 999.9Hz, 1983.9Hz, 0 deg, 0 deg
07:07 PM rue_shop5: hmm
07:07 PM rue_shop5: the freq detector is being stupid tho
07:08 PM rue_shop5: but its comming up consistantly with 0 degrees
07:08 PM rue_shop5: I wonder if there is a second pole in the system I'm not thinking of
07:10 PM rue_shop5: oh
07:10 PM rue_shop5: hmm
07:10 PM rue_shop5: now it says -88 degrees
07:11 PM rue_shop5: 4.988V, 0.078V, 4.973V, -0.015V, 4.9Hz, 9.9Hz, -3 deg, -6 deg
07:11 PM rue_shop5: 4.988V, 0.057V, 4.973V, -0.014V, 4.9Hz, 4.9Hz, -1 deg, -1 deg
07:11 PM rue_shop5: 5.020V, 0.066V, 4.978V, -0.001V, 4.9Hz, 9.9Hz, -419 deg, -832 deg
07:11 PM rue_shop5: 4.992V, 0.037V, 4.973V, -0.042V, 4.9Hz, 210526.3Hz, -419 deg, 16795 deg
07:11 PM rue_shop5: 5.022V, 0.093V, 4.983V, -0.004V, 10.0Hz, 243243.2Hz, -479 deg, 10295 deg
07:11 PM rue_shop5: 4.992V, 0.060V, 4.974V, -0.015V, 4.9Hz, 9.9Hz, -1 deg, -3 deg
07:11 PM rue_shop5: 4.987V, 0.069V, 4.973V, -0.015V, 4.9Hz, 9.9Hz, -2 deg, -5 deg
07:11 PM rue_shop5: thats 5 Hz each time
07:11 PM rue_shop5: so I have an alg. error for sure
07:11 PM Tom_L: deg are way off
07:12 PM rue_shop5: as soon as your over about 500Hz, its good
07:12 PM Tom_L: kinda like tuning a PID
07:13 PM rue_shop5: except this has no freq response
07:13 PM Tom_L: yeah
07:13 PM rue_shop5: I had to build it carefully not to
07:13 PM rue_shop5: 4.992V, 0.113V, 4.668V, 0.312V, 499.9Hz, 993.6Hz, -30 deg, -61 deg
07:13 PM rue_shop5: 4.992V, 0.113V, 4.668V, 0.310V, 499.9Hz, 994.5Hz, -30 deg, -61 deg
07:13 PM rue_shop5: 4.994V, 0.112V, 4.669V, 0.307V, 499.9Hz, 992.1Hz, -31 deg, -62 deg
07:13 PM rue_shop5: 4.995V, 0.112V, 4.669V, 0.303V, 499.9Hz, 992.1Hz, -31 deg, -61 deg
07:13 PM rue_shop5: intesting
07:14 PM rue_shop5: I think its choosing the wrong edges to measure from
07:19 PM rue_shop5: the existing hardware can be used to get the software sorted out
07:56 PM zhanx: all i got done today was cutting wood, ugh
07:57 PM zhanx: well, not true, i got tubing 1" square 3/16" wall, 20 feet
08:23 PM rue_shop5: I got a lot of sleep and tested a new circuit for a peak detector
08:23 PM rue_shop5: and proved that the phase detector isn't slightly out to lunch
08:23 PM rue_shop5: its either right, or totally out
11:26 PM rue_mohr: powers out again
11:35 PM zhanx: again? weather?
11:35 PM zhanx: about done with the bread boarding
11:38 PM rue_mohr: yea, heavy wind goin on
11:55 PM rue_mohr: the modem is on a UPS in the shop
11:55 PM rue_mohr: with no other backup
11:55 PM rue_mohr: so I'll drop out at some point
11:58 PM zhanx: k