Search found 863 matches

by andrew
Fri Mar 15, 2019 2:25 pm
Forum: Power
Topic: LTC1871 DC-DC step-up boost 4-35V converter (HCMODU0111)
Replies: 5
Views: 2257

Re: LTC1871 DC-DC step-up boost 4-35V converter (HCMODU0111)

Thanks for the image. It looks like you have the wrong version of the module. I can see the label is correct but the module in your image is the step down version no the step up. Sorry about this, it must have somehow got mixed up and labelled incorrectly. Could you email sales [at] hobbycomponents....
by andrew
Fri Mar 15, 2019 9:11 am
Forum: Power
Topic: LTC1871 DC-DC step-up boost 4-35V converter (HCMODU0111)
Replies: 5
Views: 2257

Re: LTC1871 DC-DC step-up boost 4-35V converter (HCMODU0111)

Just to be sure I've just checked our stock and they do all have two buttons on them. I can see you did purchase one from us so the only things I can think of is either it's not the correct item or the button is missing? Does it look the same as the module in the image above? Also if you still have ...
by andrew
Sun Mar 10, 2019 9:36 am
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 86
Views: 21900

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

Assuming I've understood the issue correctly - IC's U5,6,7,& 8 control each column so if any other LEDs on the same column are working (which in your case sounds like they are) then the problem can't be with that part of the circuit. IC U3 controls each layer so if any other LED on the same layer ar...
by andrew
Thu Mar 07, 2019 2:26 pm
Forum: Arduino
Topic: HCMAX7219 - LED driver library
Replies: 47
Views: 19798

Re: HCMAX7219 - LED driver library

Do you have any thoughts on the 1*addr method? (in the fudge link). I'm not really up to speed on pointers and the like. That's not actually a pointer, or rather what a pointer in C++ is. He's just multiplying the value 8 held in the variable addr by 1 , 2, 3, 4 to get 8, 16, 24, 32 etc. These then...
by andrew
Thu Mar 07, 2019 10:41 am
Forum: Arduino
Topic: HCMAX7219 - LED driver library
Replies: 47
Views: 19798

Re: HCMAX7219 - LED driver library

Firstly if you're using two displays, and assuming you haven't already done this, make sure you set the NUMBEROFDRIVERS definition in the HCMAX7219.h file to 2 (it defaults to 1). If you using Windows don't use notepad to edit as it messes up the formatting of the file - use something like notepad++...
by andrew
Thu Mar 07, 2019 10:12 am
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 86
Views: 21900

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

Result: cube booted up and ran through demo reasonably well but seemed slow? stopping to pause and whenever it was picked up by the corners it would sometimes reset and start again, but always seemed like it was unstable. cube would light at the feet, but no boot up sequence (54321 etc) delay, then...
by andrew
Wed Mar 06, 2019 10:37 am
Forum: WeMos
Topic: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)
Replies: 18
Views: 7574

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

If your talking about the motor shield itself then this will get its power (3.3V) from the D1. If your taking about powering both the motor shield and the D1 from the motor supply (VM) then I don't believe this is possible without an additional regulator unless of course the supply to your motor(s) ...
by andrew
Wed Mar 06, 2019 10:21 am
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 86
Views: 21900

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

Ah - just seen your edit. If you could try the first suggestion of upping the PSU voltage to the DC socket to 9V and if the problem still persists can you double check all the soldering around IC U8. One common issue we've seen is where when inserting the IC sockets into the PCB the odd pin on the s...
by andrew
Wed Mar 06, 2019 10:15 am
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 86
Views: 21900

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

Thanks again for the information.... connecting up the positive to from the boards to each layer and powering up using my bench power supply set to 7.5 volts Time to install grid 7 and 8 - installed grid 7 and the display wouldn’t boot properly missing out the some of the text at the beginning and h...
by andrew
Sat Mar 02, 2019 10:41 am
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 86
Views: 21900

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

@Ramshackle @willy54584 What would be nice is something like the WS2812B's in a 3mm LED package. That would make the design very simple. @Ramshackle That's great. it's still worth giving the caps another look over if you're still seeing noise issues though. At some point I could do with compiling a ...