r/AskElectronics • u/loziomario • 1d ago
How to connect the BOOTSEL test metal terminal and the GND terminal with some kind of jumper or connector...
Hello.
What I want to do is to ask to a pcb maker to create the BBQ20_USB_Keyboard for me (because it is sold out,but I need this nice keyboard for building my DIY phone)
The BBQ20_USB_Keyboard comes equipped with a blank RP2040 with nothing written to it.
I will need to write firmware to this.
It's not difficult, though. The Raspberry Pi Pico RP2040 uses an excellent and simple method for writing firmware.
When I connect it to your PC via USB while holding down the BOOTSEL button, it will be recognised as a USB memory stick. All I have to do is place this file here.
However, there was a major oversight.
The BBQ20_USB_Keyboard board does not have a BOOTSEL button...
With a regular Raspberry Pi Pico, I simply press this button...
However, with the BBQ20_USB_Keyboard, Il need to connect these two round metal terminals on the back of the board.ZitaoTech doesn't need a button.
ZitaoTech (the original keyboard creator) doesn't need a button so Il need to go through a procedure that may be difficult for me.
I need to use something metal (such as tweezers) to electrically connect the BOOTSEL test metal terminal and the GND terminal while connecting the USB..
Well,I would like to know if I can use some kind of jumper or connector to connect those terminals. It would be easier for me than using a tweezer.
Thanks.
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u/triffid_hunter Director of EE@HAX 1d ago
Sure, the chip doesn't care how the electrical connection is achieved, just that it is.
Solder a bit of wire if you like, then remove it when you don't need it anymore.
Presumably in the factory they put the board on a test jig which has pogo pins to do all the things.
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u/loziomario 1d ago
I would like to connect those terminals without soldering or using electricity,but using a jumper. Can you point me to a jumper / connector that will work ?
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