Post Created date
What is "ThingSpeak"?
awneil wrote: ThingSpeak wrote: ThingSpeak is an IoT analytics platform service that allows you everyone to aggregate, visualize, and analyze your live data streams in the cloud....
Tuesday, 22 June 2021 - 02:02
Looking For: Voltage (or Current) Limiter
Yeah, Rochester Electronics does that.  Digikey re-sells them - but there's a tickbox to filter them out.  S.
Saturday, 22 May 2021 - 01:14
Looking For: Voltage (or Current) Limiter
I'm going to join in with the 'just stick an LDO VREG in there' crowd.  Throw in a good-sized output cap for the current spikes.  Most of them have internal current...
Friday, 21 May 2021 - 19:47
Is there anything run AVR hex code from SD card (or other external memory), something like an emulator so it can run bigger hex file than the AVR's internal flash?
avrcandies wrote: Every now and then you need to run the program through the trash compactor.   Heh.  I had this problem once - and it wasn't just strings, it was...
Thursday, 13 May 2021 - 11:02
Magnet spots big trouble
Another idea:  I think they only make these in M-F*, but (with care) you could peel them apart into however many you wanted - but keep them into one group:   https://www...
Sunday, 9 May 2021 - 07:22
UART communication with 60 devices
What you have is an input impedance question.  If (for example) each servo has a 100k ohm input impedance, then 100 servos in parallel would have a 1k ohm input impedance....
Thursday, 6 May 2021 - 05:48
16 Rocket Semi-Simultaneous Launch Controller
Data cabling is not rope.  It should not be treated the same ways.    S.
Thursday, 6 May 2021 - 05:26
16 Rocket Semi-Simultaneous Launch Controller
LydaRA wrote: Or could use XLR/DMX cables.   Probably expensive.  However - AC extension cord available from Home Depot (or whatever your local home improvement store...
Thursday, 6 May 2021 - 04:07
ATtiny202 - External Oscillator Circuit
Kevil wrote: The original Oregon THN132N PCB is using crystal oscillator.   Strictly technically, that's a 'crystal', not a 'crystal oscillator'.  Yes, it's a crystal,...
Wednesday, 5 May 2021 - 04:42
16 Rocket Semi-Simultaneous Launch Controller
Looks like fairly elementary logic, really.  Given the cable lengths, I think RS-485 would work fine.  Don't try to run it too fast - 9600 baud is far faster than human...
Wednesday, 5 May 2021 - 03:18
4MB SRAM with 4 port EBI
gchapman wrote: Scroungre wrote: ETA:  Okay, they're only USD$0.20 in large quantities.  They're fifty cents each in singles.  S.   FPGA are five times that...
Sunday, 2 May 2021 - 10:15
TINY3217 Quadrature Encoder Speed Calculation
Yes, it's quite possible that it can successfully count at 2.5MHz.  But that's the whole AVR running absolutely flat-out - and now you want to retrieve data from counters and...
Sunday, 2 May 2021 - 09:49