Search found 1627 matches

by ahull
Fri Nov 17, 2017 2:01 am
Forum: Off topic
Topic: "New" "Multimeter"
Replies: 12
Views: 404

Re: "New" "Multimeter"

Very nice.. Complete with original user manual I see. :D
by ahull
Thu Nov 16, 2017 7:33 pm
Forum: Code snipplets
Topic: EEPROM emulator for 8-bit data
Replies: 8
Views: 99

Re: EEPROM emulator for 8-bit data

If you only have a few values to store, you could always use the RTC NVRAM bytes (but you would have to add a battery). I believe the RTCs 10 x 16 bit "backup registers" have a near infinite number of write cycles, and can also be written bytewise as opposed to sector wise. // Define the Base addres...
by ahull
Thu Nov 16, 2017 9:30 am
Forum: Off topic
Topic: MicroPython News
Replies: 20
Views: 2055

Re: MicroPython News

But todays fun thing is to buy a kids kite Even more fun is to make your own kites. When I was much younger I used to build big kites out of heavy duty polythene (thick bin bags or plastic animal feed bags). The lift these things generated was sometimes a little scary (especially since I lived unde...
by ahull
Tue Nov 14, 2017 9:44 pm
Forum: Off topic
Topic: Uncle Andrew.. how come we have a $2 multi MHz board?...
Replies: 23
Views: 320

Re: Uncle Andrew.. how come we have a $2 multi MHz board?...

If the chipset supports USB host mode (and this is also supported by the Custom ROM), you can add USB serial peripherals, SPI bridging and some gpio (by bitbanging the handshaking pins) . Other hardware (keyboards, mice, HID devices etc) are also available using host mode. Having said that, you can ...
by ahull
Tue Nov 14, 2017 6:48 pm
Forum: Off topic
Topic: Uncle Andrew.. how come we have a $2 multi MHz board?...
Replies: 23
Views: 320

Re: Uncle Andrew.. how come we have a $2 multi MHz board?...

ag123 wrote:
Tue Nov 14, 2017 5:25 pm
i've been wanting to install a custom rom on my phone so that those pesky apps won't complain that the phone is rooted. A truly custom rom probably doesn't need root, as everything can be root if u want it to be :lol:
What make/model of phone?
by ahull
Tue Nov 14, 2017 4:22 pm
Forum: Off topic
Topic: Uncle Andrew.. how come we have a $2 multi MHz board?...
Replies: 23
Views: 320

Re: Uncle Andrew.. how come we have a $2 multi MHz board?...

If the Android phone can be rooted (this is becoming more difficult) Older Samsung devices are perfect for re-purposing, and a lot of them are relatively easy to root. If you are up for a little bit of surgery, you can pick them up with a broken screen for pocket money prices. The replacement scree...
by ahull
Tue Nov 14, 2017 2:04 pm
Forum: Off topic
Topic: Uncle Andrew.. how come we have a $2 multi MHz board?...
Replies: 23
Views: 320

Re: Uncle Andrew.. how come we have a $2 multi MHz board?...

.. and of course old (ARM based) Android phones can be used as crude oscilloscopes, and fancy calculators.. and controllers for ESP wifi enabled gadgets, and as signal generators, and musical instrument tuners, and metronomes... and... GPS loggers .. and remote voice bugs...
by ahull
Mon Nov 13, 2017 6:04 pm
Forum: Projects
Topic: Using an STM32 to levitate/suspend tiny neodymium magnet at 12" or so...
Replies: 11
Views: 210

Re: Using an STM32 to levitate/suspend tiny neodymium magnet at 12" or so...

I don't have an answer to your problem, but I do know how to slow down a large magnet . :D



I suspect you need a far more energetic magnetic field than you might imagine... or maybe you need to spin your magnet at high speed...
by ahull
Sun Nov 12, 2017 12:05 am
Forum: STM32F103 Boards
Topic: Voltage protection by Blue Pill in time lapse rig
Replies: 17
Views: 352

Re: Voltage protection by Blue Pill in time lapse rig

The one I used was just the cheapest I could find on ebay. The original listing is long gone, but there are a lot of similar items. Try searching ebay for "SPI ILI9341 240x320" This one looks like it is probably the same. https://www.ebay.co.uk/itm/240x320-2-4-SPI-TFT-LCD-Panel-Serial-Port-Module-wi...