The Raspberry Pi Thread [6]

Pull Up resistors are sometimes used to make the default state of a pin high. A high value insures that other signals can still pull it low to send data.
The ones I added are 10K, 10000 ohms. They go from the 3.3V pin to the SDA and SCL pins on the PICO. There is just a trickle of current going through them with no signal at the pin so you see 3.3V, which is a logic Hi. Pull the pin low and that end becomes 0V. The resistor has the 3.3V across it and will draw some current. It's minimal though as its such a high resistance.

Long story short, some of the RGB keypads have the wrong value resistor. 100000 maybe instead of 10000? Micro Python doesn't seem to care, but Circuit Python does.

I can fix it if it is an issue. I've been hinting to Pimoroni that they maybe should be adding USB HID support to their Micro python image. Time will tell.

caperjack said:

Is this the issue that soldering on a resistor fixes ,seen it mentioned on the forums

I don't think so? I looked at mine and they all appear soldered OK. I "think" the pick and place machine, that puts the components on the board, put the wrong value resistor on. My fix was to solder two 10K axial lead resistors (old type with the wires on the ends) on. I just soldered them to the extra row of holes on each side of the PICO header. I put them on the bottom where you can't see them.
I may get my magnifying glass out and have another look at the one I have with the issue, that I haven't done anything too yet. The SMT componenets on these boards are really tiny.

got our 5yr old grandson with us for a week ,he's busy, non stop and a tad bit bossy , we had a bit of fun with a drone and his new bike , he's a know it all ,lol, cant tell him nuthing,for 5 he does know a lot,a lot more than i did at 5. hurry up Friday

Been tinkering on and off. Nothing special just random stuff. I was hoping my Pimoroni order would arrive, would have been a quick turn around if it had. Should have it early next week though.

Took me a while to figure out the Drum Hat Pad Mappings. You can mix and match them if you rename the files and put them in your own drums 3 folder.
It goes 4, 3, 2, 1, 7, 6, 5, 8
pad > drums 2 > drums

4 > 000_base > clap
3 > 001_cowbell > crash
2 > 002_clash > hat
1 > 003_whistle > hit
7 > 004_rim > rim
6 > 005_hat > smash
5 > 006_snare > thud
8 > 007_clap > ting

There is a Piano Hat tweak too, to make it a Piano by default. I forget what instrument it starts out as in the Itty Bitty Beat Box, but for some reason its not a Piano?
cd /home/pi/Pimoroni/pianohat/examples
python simple-piano.py

edit simple-piano.py and change
patch_index = 0
to
patch_index = 1
It will then default to piano sounds.