Search found 1485 matches

by andrew
Mon Feb 10, 2025 8:51 am
Forum: Arduino
Topic: I2C Library for Hobby Components SmartLCD (HCMODU0122)
Replies: 18
Views: 41055

Re: I2C Library for Hobby Components SmartLCD (HCMODU0122)

Hi Roger, it should work for ESP32. I'll take a look at it but in the short term can you give the following a try: Open up the SmartLCDI2C.cpp library file in a text editor located at: C:\Data\Roger_Hobby\Control_Systems\Arduino\libraries\SmartLCD\SmartLCDI2C.cpp Find the following line on line 164:...
by andrew
Fri Jan 31, 2025 3:54 pm
Forum: mLink
Topic: LongReach (LoRa) mLink Module (HCMODU0250)
Replies: 17
Views: 43928

Re: LongReach (LoRa) mLink Module (HCMODU0250)

The distance isn't great, but there are walls in the way. If it's not far then I don't think it will be an issue. I myself have tested them though a building and they still manage to maintain a decent range with the stock antennas. If I find I need to upgrade the pigtails to either stick aerials or...
by andrew
Mon Jan 27, 2025 8:19 am
Forum: Arduino
Topic: mLink Arduino library for mLink modules
Replies: 35
Views: 115380

Re: mLink Arduino library for mLink modules

Thanks for pointing this out. I'll get a note added to the first post.
by andrew
Mon Jan 27, 2025 8:13 am
Forum: Display
Topic: 2.4" Colour TFT Module With Resistive Touch (HCMODU0133)
Replies: 2
Views: 38658

Re: 2.4" Colour TFT Module With Resistive Touch (HCMODU0133)

Based on the schematic, it looks to me that J1 bypasses the on-board 3.3V regulator. So… If you're using a 5V power supply, J1 must be left un-jumpered. This ensures the module is powered through the 3.3V regulator output. If you're using a 3.3V power supply, J1 should be jumpered. This bypasses the...
by andrew
Wed Jan 15, 2025 2:45 pm
Forum: mLink
Topic: mLink 1ch (HCMODU00182), 2ch (HCMODU0183), And 4ch (HCMODU0184) I2C / Parallel Relay Modules
Replies: 51
Views: 143155

Re: mLink 1ch (HCMODU00182), 2ch (HCMODU0183), And 4ch (HCMODU0184) I2C / Parallel Relay Modules

Hi Andrew, Just about to implement some code using the new registers, I see for RLY_ON (&off) write is used, I'm sure there is a reason for this being different than writebit of the standard on/off commands. That's correct. It's because the original register sets the state of all 4 registers at the...
by andrew
Tue Jan 14, 2025 11:49 am
Forum: WeMos
Topic: Wemos Lolin D1 Mini Pro V2 (HCWEMO0018)
Replies: 10
Views: 68042

Re: Wemos Lolin D1 Mini Pro V2 (HCWEMO0018)

Ok, thanks for letting me know.

Maybe it's being caused by a power saving option on the USB ports?
USB_Power_Options.png
by andrew
Sat Jan 11, 2025 4:23 pm
Forum: WeMos
Topic: Wemos Lolin D1 Mini Pro V2 (HCWEMO0018)
Replies: 10
Views: 68042

Re: Wemos Lolin D1 Mini Pro V2 (HCWEMO0018)

I measured the voltage between the 5v Pin and the Gnd pin on the board and that was 3.4v. The 3.3V pin measured 3.0v to Gnd. I see from the diagram that there is a "fuse" between the USB input and the 5v pin, and I'm wondering now whether this has gone high resistance. You could try probing either ...
by andrew
Fri Jan 10, 2025 3:33 pm
Forum: WeMos
Topic: Wemos Lolin D1 Mini Pro V2 (HCWEMO0018)
Replies: 10
Views: 68042

Re: Wemos Lolin D1 Mini Pro V2 (HCWEMO0018)

After returning to work on them after a break I found that I could not see them via USB as Serial Ports on my Win 10 PC. I found that if I pressed and held the reset button down then the devices could be seen as Serial Port but only when I held the Reset button down on the processor board. The D1 M...
by andrew
Wed Jan 08, 2025 9:55 am
Forum: General Discussion
Topic: HCMODU0061 As a Bluetooth extender
Replies: 2
Views: 12433

Re: HCMODU0061 As a Bluetooth extender

would it be possible to connect two units data pins (and power) with 10M of cat5 cable and link one to the phone and the other to the camera as a Bluetooth extender. It would be using it out of spec but it may work at lower data rates. However, these are serial devices in that they only transfer a ...
by andrew
Mon Dec 16, 2024 9:52 am
Forum: General Discussion
Topic: Master / Slave Bluetooth Module (HC-05)
Replies: 10
Views: 12967

Re: Master / Slave Bluetooth Module (HC-05)

Ah, I guessed PDP-11 because I know they were still used in the 90’s. A lot of interesting old computers you’ve used there. The range seems very low, but that may be due to all the metal in my workshop. Presumably it's very line-of-sight. Given I have that, what kind of range should I be seeing? It’...

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