Search found 927 matches

by andrew
Sun Apr 05, 2020 8:39 am
Forum: Security/RFID
Topic: RDM6300 125KHz (ID) RFID reader module (HCRFID0006)
Replies: 12
Views: 20885

Re: RDM6300 125KHz (ID) RFID reader module (HCRFID0006)

I don't have any cards - do these have a number on them too? The ones we sell do: https://hobbycomponents.com/rfid/448-125khz-rfid-id-card-set-of-10 Code 02 is "SOT" or Start Of Text Code 03 is "EOT" or End Of Text... Makes sense! The 12 codes remaining in between these control characters convert t...
by andrew
Wed Mar 11, 2020 10:03 am
Forum: Wireless / Wired
Topic: TB387 20dBm High_Power 2.4GHz Serial Module (HCMODU0089)
Replies: 2
Views: 16025

Re: TB387 20dBm High_Power 2.4GHz Serial Module (HCMODU0089)

The TB387s have to be physically separated by at least a couple of metres, maybe more, before communication worked. In real life operation this doesn't matter much, but it's a pain when trying stuff out as you can't sit the two ends next to one another. Unfortunately this is a side effect of them b...
by andrew
Mon Mar 09, 2020 3:34 pm
Forum: Kits
Topic: Hobby Components Maze Runner (HCROBO0052)
Replies: 7
Views: 13152

Re: Hobby Components Maze Runner (HCROBO0052)

Thanks for your answer... Is it possible to upload an image or sketch of your maze? I'll check it against the code just to make sure there are no issues there. I assume it doesn't generally have any problems completing the first stage? Especially the point where it gets it wrong stage 2. I Just want...
by andrew
Mon Mar 09, 2020 9:12 am
Forum: Kits
Topic: Hobby Components Maze Runner (HCROBO0052)
Replies: 7
Views: 13152

Re: Hobby Components Maze Runner (HCROBO0052)

however when it as put back to the start position after the first pass it does not seem to remember the maze it has just solved I just need to clarify the correct operation... 1) On the first pass it should navigate the maze to find the end. 2) Once it has found the end it then attempts to solve th...
by andrew
Thu Mar 05, 2020 2:20 pm
Forum: Sensors
Topic: HX711 Bridge Sensor Digital Interface Module (HCMODU0073)
Replies: 5
Views: 22179

Re: HX711 Bridge Sensor Digital Interface Module (HCMODU0073)

From what I understand Wheatstone bridge output voltage will be positive in one case and negative in the second case, right ? I can't see any problems with that, it should also double the sensitivity to strain. If yes, how is HX711 able to measure the change in the sign of the voltage? The HX711's ...
by andrew
Wed Mar 04, 2020 9:46 am
Forum: Sensors
Topic: BF350-3AA Strain Gauge Module (HCSENS0036)
Replies: 3
Views: 10550

Re: BF350-3AA Strain Gauge Module (HCSENS0036)

1)Is this module suitable for working with strain gages 350 Ohm different than the one delivered in the package, but from a different company? Yes that should be fine but you'd probably want the gauge factor to be similar as well. There's more details about the sensor that's used on the module here...
by andrew
Sun Feb 23, 2020 8:37 am
Forum: Test Equipment
Topic: Hobby Components 16 Channel Logic Analyser (HCTEST0035)
Replies: 6
Views: 10339

Re: Hobby Components 16 Channel Logic Analyser (HCTEST0035)

It is purely a streaming device. I.e. samples are directly transferred to the computer as they are measured from the pins. It does not use additional hardware for buffering/packing the data.
by andrew
Thu Feb 13, 2020 9:36 am
Forum: Test Equipment
Topic: Hobby Components 16 Channel Logic Analyser (HCTEST0035)
Replies: 6
Views: 10339

Re: Hobby Components 16 Channel Logic Analyser (HCTEST0035)

I see from your section here about drivers that this is a Cypres FX2 based analyser. But can anyone tell me what else is inside? It does indeed use a Cypress FX2 device with the addition of two 74LCX245 transceivers to give it both 3.3V and 5V level comparability. In Joel Holdsworth's Open Tech Lab...
by andrew
Wed Feb 05, 2020 9:39 am
Forum: EDTracker
Topic: EDTracker Bundle (HCKITS0021, 21B, 21E, 21F, 21G, 21H & 21I)
Replies: 29
Views: 27339

Re: EDTracker Bundle (HCKITS0021, 21B, 21E, 21F, 21G, 21H & 21I)

As far as I know rev3 has been designed to allow the final user to add a couple of components to get IR tracking working in addition to gyro/magneto tracking. I assume that V3.1A is designed in the same purpose, Yes that's correct. Can somebody explain what are the specifities of Rev3.1A V3.1A (our...
by andrew
Mon Jan 27, 2020 11:52 am
Forum: WeMos
Topic: WeMos D1 Mini Lithium Battery Shield (HCWEMO0009)
Replies: 5
Views: 12791

Re: WeMos D1 Mini Lithium Battery Shield (HCWEMO0009)

Would it charge the battery from the 5v line if the usb was plugged into a D1 mini for instance?
No, I'm afraid to charge the battery it must be powered via the battery shields USB port.