#garfield Logs

Aug 08 2021

09:44 AM Tom_itx is now known as Tom_L
05:54 PM * Tom_L gets out the spartan board, plugs it in and watches it count hex numbers
06:02 PM aandrew: man Natwest has been trying like crazy to get in contact with me about my account this weekend
06:07 PM Tom_L: does ardweenie support Pmod?
06:09 PM rue_shop1: pmod?
06:09 PM Tom_L: standard pinout defined by digilent
06:09 PM Tom_L: https://store.digilentinc.com/pmod-hygro-digital-humidity-and-temperature-sensor/
06:10 PM rue_shop1: being this is te first I'v ever heard of it, I'm inclined to say no
06:10 PM Tom_L: my board has 2 Pmod sockets on it
06:10 PM rue_shop1: huh
06:12 PM rue_shop1: maybe casting a flywheel for that little pneumatic engine will keep my brain moving
06:12 PM rue_shop1: whats your board look like again tom?
06:13 PM rue_shop1: Tom_L, I didnt show you the lcd I got working
06:13 PM rue_shop1: its a raw panel
06:13 PM rue_shop1: maybe while I'm zoned out I'll clean the shop table
06:14 PM rue_shop1: might last me about 5 mins before I get distracted
06:15 PM Tom_L: https://www.youtube.com/watch?v=o8lezpJhfAo
06:15 PM Tom_L: 2 plugs bottom left are Pmod
06:15 PM Tom_L: i haven't been able to find that board anywhere at all now
06:15 PM Tom_L: it was really cheap for all you get
06:17 PM rue_shop1: finding docs for that chineese board was fun
06:20 PM Tom_L: i had a file with it's pinout but have no idea where it is now
06:24 PM Tom_L: how many io are brought out on your board?
06:24 PM rue_mohr: hmm, all of them?
06:24 PM rue_mohr: give me a min to get back to the shop
06:25 PM Tom_L: NET "led0" LOC = T9 | IOSTANDARD = SDIO;
06:25 PM Tom_L: maybe that's it
06:29 PM rue_shop1: about 110
06:32 PM rue_shop1: is that about all of them?
06:32 PM rue_shop1: huh
06:32 PM rue_shop1: ya know
06:33 PM rue_shop1: fpga is big enough to do 1 io per key on a keyboard
06:33 PM rue_shop1: is that a bad thought?
06:33 PM Tom_L: not so efficient
06:34 PM Tom_L: i got that kbd fpga code
06:34 PM rue_shop1: yes but
06:37 PM Tom_L: huh
06:37 PM Tom_L: my old cad software takes advantage of all cores
06:37 PM Tom_L: still only 15% cpu useage when generating a gcode file
06:38 PM rue_shop1: :)
06:39 PM Tom_L: i swapped CPUs around today
06:40 PM rue_shop1: i5?
06:40 PM Tom_L: yes
06:40 PM Tom_L: i got a faster i5 and put in my main pc and moved the i5 from it to the spare board
06:40 PM Tom_L: it had the i7 on it
06:40 PM Tom_L: so i've got a spare i7
06:41 PM rue_shop1: hmm
06:41 PM rue_shop1: cleaning up the main shop table
06:41 PM rue_shop1: I was working on an inverter for the shed
06:41 PM Tom_L: excuse to blow out the fans
06:41 PM rue_shop1: since then I have cpld/fpga
06:42 PM rue_shop1: I can do all the signal gen with a cpld
06:42 PM rue_shop1: maybe
06:42 PM rue_shop1: lots of lookup
06:42 PM Tom_L: take a while to get used to the parallel events?
06:43 PM rue_shop1: oh I started to put up a solar panel on it and forgot
06:43 PM rue_shop1: well, the io of the cpld/fpga makes things simpler
06:43 PM rue_shop1: for example, I have a problem if I want to use an stm32 as a parallel slave
06:43 PM rue_shop1: _IF_ I need it to take an address too
06:44 PM rue_shop1: no problem with cpld
06:50 PM rue_shop1: I wonder how many cpld there are out there, labeled as proprietary chips
06:50 PM rue_shop1: or otp ones
07:39 PM Tom_L: https://www.evwest.com/catalog/product_info.php?cPath=8&products_id=476&osCsid=9439981b527dedba01064327c0ed1d2a
07:39 PM Tom_L: conversion for your truck
08:05 PM rue_mohr: $12000 is a problem
08:06 PM rue_mohr: esp, casue its just a motor
08:06 PM rue_mohr: I can do a motor for $2000
08:06 PM rue_mohr: what I need was an alternative for the $20000 in batteries
08:34 PM aandrew: I just do not understand why e-vehicle companies are sticking with teh traditional one large motor plus drivetrain design
08:34 PM aandrew: four smaller hub or pancake motors at each wheel has so many advantages
08:36 PM Tom_L: harder to seal from debri/water entry? probably not
08:37 PM Tom_L: need room for rotors & calipers too
08:37 PM Tom_L: heat
09:05 PM aandrew: yeah heat might be it, although it seems like it'd be easier to cool it right there at the wheel.
09:05 PM aandrew: I mean I'm sure there are smarter people than me who have determined that it's not the best, I just can't see the reasoning
09:08 PM Tom_L: space could also be an issue
09:10 PM aandrew: perhaps, although the motors would be considerably smaller
09:10 PM aandrew: might also be tricky putting that additional weight on the suspension at that point
09:17 PM rue_shop3: taking boiler apart
09:17 PM rue_shop3: oof she's heavy
11:08 PM aandrew: hm
11:08 PM aandrew: if I need a module 1 14T pinion gear with a 3.175mm (1/8") bore, where the hell would I find that?
11:09 PM aandrew: alternatively, I can find 5mm bore but then need a reducer sleeve
11:22 PM rue_mohr: Tom_itx, ?
11:22 PM rue_mohr: Time for an A axis Tom_itx ...
11:44 PM rue_shop1: heh, for the greenhouse timer I forgot I have a bunch of atmega based thermostat panels that had their power end burn out