Search found 907 matches

by andrew
Wed Apr 24, 2019 2:38 pm
Forum: WeMos
Topic: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)
Replies: 12
Views: 6611

Re: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)

Yeah, if the board manager is reporting an error it doesn't surprise me that it's not appearing in the list but just wanted to be sure I understood the problem correctly. The only thing I can think of to try is to temporally remove all the links in the preferences section and then open up the board ...
by andrew
Wed Apr 24, 2019 10:52 am
Forum: WeMos
Topic: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)
Replies: 12
Views: 6611

Re: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)

Odd, I expected it to be a problem with something pasted there but your list looks fine to me. Just to be sure I've uninstalled it and reinstalled it again on 1.8.9 and it worked fine so I'm pretty sure it's not an issue with the link. At what point do you see the error message appear, when you firs...
by andrew
Wed Apr 24, 2019 9:16 am
Forum: WeMos
Topic: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)
Replies: 12
Views: 6611

Re: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)

Error downloading https://downloads.arduino.cc/packages/p ... index.json and there is no reference to Lolin D32 ESP32 The link you're getting the error for isn't the espessif one so there won't be any information for the D32 in that one. In your Arduino IDE could you go to File->preferences and in ...
by andrew
Tue Apr 23, 2019 4:29 pm
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 111
Views: 35338

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

Thanks - that's exactly the voltages I would expect to see. If we assume for now that the microcontroller isn't running, those voltages at least tell me it is trying to start up and so is not completely dead. However it could be that there's a problem with the crystal circuit. I know you said you've...
by andrew
Tue Apr 23, 2019 1:12 pm
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 111
Views: 35338

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

Ah sorry! I didn't make that clear. Can you measure the voltages on both pins with respect to GND (0V). I.e....

1) +Ve probe on pin 9 and -ve probe on pin 8 (GND),

2) +Ve probe on pin 10 and -ve probe on pin 8 (GND).

You should expect to see a small DC voltage on both pins.
by andrew
Sat Apr 20, 2019 9:59 am
Forum: Electronics Kits / Bundles
Topic: Hobby Components 8x8x8 Cube Kit (HCKITS0050)
Replies: 111
Views: 35338

Re: Hobby Components 8x8x8 Cube Kit (HCKITS0050)

I have my cube mostly assembled but as I was testing the fifth grid the blue LEDs stopped lighting up and the large white ones only light up inconsistently White LEDs come on dimly or not at all when the kit is plugged in. Touching pin 4 of U2 or the closest leg of Q1 to U2 with a finger or metal i...
by andrew
Fri Apr 19, 2019 7:42 am
Forum: WeMos
Topic: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)
Replies: 12
Views: 6611

Re: Wemos/Lolin D32 ESP32 development board (HCWEMO0014)

Hi Chris

I've just tried the link with 1.8.9 and it seems to working fine for me. Could you give it another try, maybe the host was down at the time?
by andrew
Fri Apr 19, 2019 7:40 am
Forum: Sensors
Topic: TTP223 Capacitive Touch Sensor (HCSENS0039)
Replies: 11
Views: 7294

Re: TTP223 Capacitive Touch Sensor (HCSENS0039)

If I'm understanding what you're trying to do correctly I'm afraid you can't power the step-up power supply module from the output of the touch sensor. The TTP223's output is just a digital pin and is only capable of sourcing a maximum of 8mA which I doubt is enough to power both the step-up module ...
by andrew
Sun Apr 14, 2019 8:15 am
Forum: Arduino
Topic: HCDotMatrix Arduino library for 8x8 LED dot matrix module
Replies: 32
Views: 48840

Re: HCDotMatrix Arduino library for 8x8 LED dot matrix module

I've just tried it on 1.8.9 but can't seem to replicate this warning either. Very odd. I've attached an updated HCDotMatrix.cpp & HCDotMatrix.h . Can you copy these over your existing files and give it a try. As I say I can't replicate the error so I don't know if it will fix the warning or not. HCD...
by andrew
Mon Apr 08, 2019 8:48 am
Forum: General Discussion
Topic: Logic analyzer (HCTEST0006) not working
Replies: 7
Views: 9478

Re: Logic analyzer (HCTEST0006) not working

I can see from the image that D4 & 5 are pulled low. This is a good sign as it at least means that the analyser is seeing something connected to those pins and that it is capturing something. One other thing I can see from your attached image is that the sample rate is set to 24KHz (24,000 samples p...