I am an amateur astrophotographer. I am trying to build a custom Pi similar to ZWO's ASI AIR. I am looking to add some 12v and 8v ports (or variable) to my Pi 4b. I would also like to be able to power the Pi from the same source as the power ports. Is there a hat that may accommodate this or maybe a project that I could follow to add this function?
Thanks
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Hi all,
I bought my first Dremel earlier in the week so I can finally put all my evil hardware modding plans into action! First up is building a Pi into a PAL SNES case to use as a multi-emulator using RetroPie, and had some quick questions for anyone in the know…
1. Ive ordered the GPIO adapter so I can use the original controller board from the console, but will this also enable the original power LED on the SNES to work as its on the same PCB, or so I need to come up with other ideas for that? If the latter, what would you suggest given that the adapter will be using all the GPIO pins?
2. My plan is to mount the internals of an Xbox 360 wireless controller adapter (the kind you get for using a 360 pad on PC/Mac) into the case, so that the SNES reset button will press down onto the controller adapter’s button for pairing pads. I know drivers are available, but will the pi have any problems running the adapter power-wise from its USBs?
3. Given that my GPIOs will be taken up by the controller adapter, any ideas how I could get the SNES on/off switch to function as a power switch for the Pi? Ideally I'd like it to safely halt the system then remove all power when I flick the switch to 'off'.
4. Last one. I’m only going to be emulating 8bit/16bit, possibly some pre-8bit stuff, so nothing too taxing. I have heatsinks on the pi’s CPU and GPU, would a fan be needed also or will the pi be fine being passively cooled?
If anyone’s interested I can upload some photos of where I’m at so far, and I hope to get at least the hardware side of it wrapped up by midweek. Ive even mounted a USB stick into an old cart and am using it in conjunction with the original cart connector and eject bar, and a USB extender to make things a bit more authentic
Hi! I've just built a Raspberry Pi Gameboy by with parts and instructions from Adafruit, with all the controls hooked up tp GPIO pins. I was wondering specifically if anyone knew what wire numbers on the gpio ribbon corresponded to what pins on the Model B's gpio. For example, would Wire #3 correspond to GPIO pin #6? Or something like that. I need this information to map the keyboard controls using Adafruit Retrogame, because wire numbers on the ribon don't seem to be the same as the GPIO numbers they're connected to. Any help would be appreciated!
Gameboy project: search Adafruit PiGrrl (Grrl is not a typo in this case) - First Result
GPIO ribbon: Go to adafruit . com / products / 862
I'm apparently not allowed to post links yet.
EDIT: Fbcp's framerate is so low because it screenshots the HDMI output and transfers it to the mini screen about every 25ms, giving about 28FPS. Any way I can change the delay?
Go to raspberry.org and look at the pin out for the gpio header.
So I'm doing a project today with the Raspberry Pi 2 Model B and I realized that some (not all) of the GPIO pins output 3.3V at startup (I mean the data pins, not the power output pins). I cannot have it output 3.3V since I'm using the RPI to control a quadcopter and that would cause a mess if the motors ran at full speed at bootup. So do you guys know which pins are 0V (off) at startup and I can control using WiringPi?
Hi, I need to let Tasker communicate with an electronic circuit designed by me through the USB port of my smartphone. The electronic circuit must read the logic status of the D + and D- lines of the USB port and activate relays to control some electrical devices. I would like to know if Taker can directly manage these lines by bringing them up or down. If you could not do it, do you have any idea how to make tasker communicate via hardware with the outside world? In the past I used the audio output by letting out a sequence of beeps from the headphone jack and an electronic circuit that decoded these sequences to operate relays. I must say that it worked very well. But now I would like to use the USB port that I will use to keep the smartphone in charge.
gar.special said:
Hi, I need to let Tasker communicate with an electronic circuit designed by me through the USB port of my smartphone. The electronic circuit must read the logic status of the D + and D- lines of the USB port and activate relays to control some electrical devices. I would like to know if Taker can directly manage these lines by bringing them up or down. If you could not do it, do you have any idea how to make tasker communicate via hardware with the outside world? In the past I used the audio output by letting out a sequence of beeps from the headphone jack and an electronic circuit that decoded these sequences to operate relays. I must say that it worked very well. But now I would like to use the USB port that I will use to keep the smartphone in charge.
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maybe using Termux?
https://www.reddit.com/r/termux/comments/8qc92m/programming_on_the_phone_using_termux_terminal/
termux and tasker play very well together. python, C, etc are available.
You might look into the AOSP interaction page.
"find somebody that you think is undeserving of your compassion and give it to them" - Christian Picciolini
Greetings everyone.
I need some help regarding Raspberry PI.
I want Raspberry PI that can play simple sound during the start-up to connect it to the car using a usb outlet.
so the requirement for the Raspberry PI is :
-Can be powered by 12v usb outlet.
-3.5 headphone jack
-ability to install external speakers
-Small storage size (1GB)
So what is the best Raspberry PI model that can fill full those requirements?