Questions tagged [hat]

A "hat" is an add on board designed specifically to fit on top of the pi via the GPIO header. They have a small EEPROM chip which is used to configure them, but may be built to serve any purpose.

Filter by
Sorted by
Tagged with
0 votes
0 answers
20 views

Raspberry Pi Zero 2W in gadget mode with USB HUB HAT

I have a Raspberry Pi Zero 2W in gadget mode that can transmit data and emulate a mouse or keyboard. But when I connect a USB HUB HAT, I'm not able to transmit data. I'm getting [Errno 108] Cannot ...
user avatar
  • 101
0 votes
1 answer
18 views

Use Adafruit PiTFT as hat with Adafruit DS3231 in a case

I have a raspberry pi 3 A+ connected to an Adafruit PiTFT Plus 320x240 2.8" TFT + Capacitive Touchscreen and an Adafruit DS3231 Precision RTC Breakout for keeping time. Both are connected using ...
user avatar
0 votes
0 answers
15 views

Adafruit_SSD1306 and Adafruit-BBIO legacy install issues

trying to get my 0.91 oled v1.0 geekpi expansion board hat to run in general/autorun when powered on, the OLED and the Leds, however im having tis pp up everytime i get to the OLED , any help is ...
user avatar
0 votes
0 answers
17 views

Installing Waveshare SIM7600E-H driver

I bought a Waveshare SIM7600E-H module for my raspberry, following the guide I connected the USB port to my computer and installed the windows drivers after which the hat serial ports were all ...
user avatar
  • 101
0 votes
2 answers
64 views

Get Measurements from Battery/Solar Setup

I'm planning a setup with an rpi3b+ and the pijuice hat (battery) and pijuice solar module. It is key to my project that I can access the following data digitally i.e. in the pi: current power ...
user avatar
  • 1
0 votes
1 answer
50 views

Pi 4, Hifiberry, and touchscreen power

I recently finished my basement and am in the process of getting it all configured, and one thing I wanted was to build a Raspberry Pi streaming device. I got a 3D printer for Christmas and found this ...
user avatar
0 votes
0 answers
27 views

LTE-HAT GPIO SIM7600

I´m able to connect to the internet via the SIM7600 4G HAT modem when it´s connected to USB. Now I´d like to achieve the same without USB but only with the GPIO connection. Somehow the manual (https://...
user avatar
  • 1
0 votes
0 answers
48 views

Looking for information about a generic 480x320 Chinese TFT display pictured in this question. Schematics, new ili9486 english spec

The picture was "borrowed" from What have you done to make generic TFT touchscreen display work? I'm trying to write a driver to use the module from a Pico. I have a preliminary spec I ...
user avatar
0 votes
0 answers
18 views

I have a MX35LF1GE4AB Flash memory chip, is there a hat that allows me to read its contents as it was a hard disk?

I have a MX35LF1GE4AB flash chip and for debug/analysix purpoces I want to read its contents as it was a hard disk/SD card/USB memory stick. Is there a hat I can place upor rapberry pi zero in order ...
user avatar
0 votes
0 answers
120 views

PoE+ Hat, fan not spinning until level 3

I’m not sure if it’s a problem or not, but here is what’s happening: The fan on the PoE hat only starts spinning at level 3, and louder at level 4. On level 1 and 2, the fan it’s spinning at all. It’s ...
user avatar
  • 1
0 votes
1 answer
63 views

Control 2 steppers and 1 servo a the same time on a motor Hat

Basically, I have a raspberry pi 4 with a Motor Hat to control two stepper motors. The whole thing looks like this : https://i.stack.imgur.com/SIjzI.jpg Now I want to connect a servo motor, and I know ...
user avatar
  • 1
0 votes
0 answers
38 views

Raspberry Pi Zero W not interacting with GSM HAT

I have Raspberry Pi Zero W and this hat. I did the following things: disabled login shell through serial in rasp-config enabled serial port hardware in rasp-config removed console=serial0 in /boot/...
user avatar
0 votes
0 answers
65 views

Quectel L86 HAT setup with Raspberry pi 4

I am a neophyte and want to setup my gps with my raspberry pi, in order to get latitude and longitude values. But I am stuck in the very first step of setting up the gps module. Hardware ...
user avatar
0 votes
2 answers
1k views

How to boot and safely shutdown with a button when WAKE_ON_GPIO=0

1. Description To boot and shutdown my pi I have been using a button shorting GPIO 3 an GND. However after shutting down the pi, the fan shim and HDD keep on running. To solve this I've edited the ...
user avatar
0 votes
2 answers
48 views

Why is a Justboom DAC HAT no longer recognised after an upgrade to a Raspi 3B+?

I recently replaced my faulty old Raspi 3B with a 3B+, attached the two HATs I've got (a JustBoom DAC HAT sound card and an S.USV Advanced), plugged the SD card into the new one, upgraded the Raspbian ...
user avatar
  • 445
0 votes
1 answer
167 views

Sending Digital Audio Through GPIO Pins

I currently use my raspberry Pi as a Spotify music streamer for my Hifi system. I send digital signal out through the USB port to a Digital to Analog Converter (DAC), and then into an Amp, and finally ...
user avatar
1 vote
0 answers
190 views

RPi4 won't power on from 5V if any load is present on 3V3

The short version: Raspberry Pi 4B, rev 1.1, doesn't turn on when provided with 5V on the pins 2&4 if any load is present on the 3V3 (pins 1&17). However, powering the Pi from a USB-C source (...
user avatar
0 votes
1 answer
120 views

SIM7600 LTE Modem via GPIO

I am building a drone that should connect to LTE internet with waveshares SIM7600 HAT. Every guide I see online for using the HAT as a LTE modem is using a USB connection between the PI and the HAT. ...
user avatar
  • 1
0 votes
0 answers
114 views

X728 UPS email setup

I`ve got an X728 ups hat and is working right, using the .sh provided by geekworm. What I expect next is to write some code make the .sh to send an email when power is down or up, or when batteries ...
user avatar
0 votes
0 answers
130 views

Waveshare e-paper demo not working - Raspberry Pi Zero W 1.1

I have a Raspberry Pi Zero W 1.1 and I bought this e-paper HAT and monitor combo from waveshare I have Installed Raspberry Pi OS headless and configured everything according to this official wiki ...
user avatar
  • 101
-1 votes
1 answer
198 views

edit UPS HAT safe shutdown script

I write this since I need advice with an RPi Hat that I purchased and the assistance told me to find a solution myself! I purchased an UPS HAT (UPS3 from geekworm). I need to perform some actions ...
user avatar
  • 1
1 vote
0 answers
189 views

hdmi_cvt ignored on my boot/config.txt

I am testing a LCD HAT ( ST7735S ) that I bought and it is working great with fbcp, but I can´t get raspberry pi os to run at native screen resolution ( 128x128 ). I´ve been reading all documentation ...
user avatar
  • 179
1 vote
0 answers
73 views

C4labs cloudlet case, 8 x PI 4s, Netgear GC108PP, any chance for PoE?

As a newbie but a Linux oldie I did a fatal error by not documenting myself in advance that I need a HAT for PoE. I bought basically the C4labs cloudlet case, installed 8 x PI 4s in it. I got the ...
user avatar
  • 11
0 votes
0 answers
305 views

SIM7600E-H on Raspberry Pi 4 model B not receiving GPS data

I'm not able to receive GPS data. The jumpers are placed in the top position (A) AT commands return the following: >>> ser = serial.Serial("/dev/ttyUSB2",115200) >>> ser....
user avatar
1 vote
0 answers
55 views

Device Tree for Generic Output

I'm currently developing my first Pi Hat for a personal project. I've been exploring Device Trees and I'm quite liking the concept from the perspective that the userland code can address specific ...
user avatar
2 votes
0 answers
113 views

Stacking up multiple grove base HATs on Raspberry Pi

I want to stack multiple Grove base HATs on a single Raspberry Pi. This is the HAT i am using https://wiki.seeedstudio.com/Grove_Base_Hat_for_Raspberry_Pi My application needs to interface 24 analog ...
user avatar
0 votes
1 answer
360 views

Pi 4: Keep USB powered when rebooting

I'm using a ClusterHat v2.3 on a Raspberry Pi 4. On rebooting, the USB Ports losing power, so the cluster nodes as well. Is there a way to configure the Pi 4 to keep the USB power on when rebooting / ...
user avatar
1 vote
1 answer
154 views

Can I stack multiple different HATs on RaspberryPi4?

I want to use multiple different HATs on the same Raspberry Pi. These are the boards I want to use: https://www.sparkfun.com/products/16328 https://www.seeedstudio.com/ReSpeaker-4-Mic-Array-for-...
user avatar
1 vote
1 answer
895 views

Rpi3B+ Python Controlling Multiple SIM800 / SIM900 / SIM7600 Modules

My goal is to control at least 3 SIM800c hats using just one RPi but I'm not quite sure it will work. How will Rpi reference each hat? Can each hat make a call of their own? For reference: How to ...
user avatar
  • 137
1 vote
2 answers
127 views

Regular servo vs. Linear servo

I was wondering if there was any difference between controlling a normal rotating servo and a linear servo with the raspberry pi. Would the code look essentially the same? I'm trying to build a device ...
user avatar
  • 11
1 vote
0 answers
302 views

Raspberry Pi FlexRay HAT [closed]

I've been searching for a couple of days for a FlexRay HAT / module for Raspberry pi without success. Is there such a module available?
user avatar
0 votes
0 answers
127 views

Inky pHAT compatibility issues with Raspberry Pi 4B

I've bought a Raspberry Pi Model 4B for a few different projects, one of which is to use an Inky pHAT display (as seen on The Pi Hut) on it. When the display arrived, I attached it to the Pi's GPIO ...
user avatar
1 vote
1 answer
151 views

How to detect list of available sensors and actuators reside on a HAT?

I have been working with many HATs along with Raspberry Pi such as Sense HAT, Pimoroni Enviro pHAT; and so on. However, HATs report its existence to the device tree in /proc/device-tree/hat and /sys/...
user avatar
0 votes
1 answer
279 views

Outputing DMX using Bitwizard Hat

I have a Raspberry Pi 4B with a Bitwizard DMX Hat which uses the serial port. I try to output DMX from the board to a LED light using QLC+ software, but it's not working. I tried some commands and I ...
user avatar
1 vote
1 answer
2k views

Multiple Hat and GPIO

I need, for a project, to connect on the same RPi (a 3B+) a NFC lector, the Sense Hat and also be able to use 26 GPIO port for additionnal LED and button. The project is a kind of a physical "Keep ...
user avatar
2 votes
2 answers
1k views

How can Rpi4B python use USB Serial AT commands to control a 4G/LTE MiFi modem to text SMS?

I have purchased this 4G HAT and I'm using it with this module in a raspberry 4. I use the USB connection. I installed a ppp connection and everything is working correctly. My problem is: how do I ...
user avatar
  • 213
2 votes
0 answers
131 views

Using GPIO on the Bitwizard DMX hat board

I have a rpi 4, with a relays board on top of it, and a Bitwizard DMX hat board on top of that. The Bitwzard board doesn't have a male header on the top, so I am unable to connect my sensors. It was ...
user avatar
1 vote
1 answer
212 views

Process to select and stack a relay HAT and a touch-display HAT

The goal is to design thermostat system via stacking Raspberry pi HATs: Raspberry pi (3B+ or 4) 4-channel relay TFT Touch Display It would be preferable that community experience point out any ...
user avatar
  • 637
1 vote
1 answer
65 views

Is there a way to have USB data transferred from Pi to HAT?

I'm designing a Raspberry Pi HAT that requires USB for debugging. The 40-pin GPIO connector that connects the Pi to the HAT doesn't seem to have any USB designated pins. I would like to use the USB ...
user avatar
0 votes
2 answers
2k views

WaveShare WM8960 Audio Sound Card / HAT Installation on Rpi Zero W Problem

I recently bought the WaveShare WM8960 Audio HAT said compatible with Raspberry Pi Zero W. The install complete without trouble, I can see that the soundcard is installed by typing sudo dkms status ...
user avatar
0 votes
0 answers
222 views

Servo and DC/Stepper Motor Hats Together

I am creating a robot with my Raspberry Pi 3 B+. For my project, I wish to use 2x NEMA 17 stepper motors for moving around, and 2x SG90 servos for managing pan/tilt of the head. I already have an ...
user avatar
1 vote
1 answer
393 views

Audio Injector stereo soundcard is preventing boot

I recently bought a Audioinjector stereo soundcard HAT to stream sound on my raspberry pi running Raspbian. I went to their website and installed the .deb installer file and ran it with audioInjector-...
user avatar
1 vote
3 answers
5k views

Waveshare SIM7600E-H no wwan0 interface when connected to Raspberry Pi 4 model B

I have connected the new Raspberry Pi 4 model b with the waveshare SIM7600E-H 4G HAT. The os is Raspbian Buster Lite. The configuration I use is the following: 1) The jumpers are placed in the middle ...
user avatar
  • 113
1 vote
0 answers
3k views

SIM7600 4G HAT Rpi3B+ Setup Problem

I am trying to get a SIM7600E-H-4G-HAT running on my Raspberry Pi 3B+, but it is not working. Here is what I've done so far: Inserted my SIM-Card, connected the antenna to Main, connected the entire ...
user avatar
1 vote
1 answer
33 views

Does a hat designed for RPi 2 B still work on Rpi4 (GPIO compatbility)?

I'm now continuing the design of a PCB (Pi Hat) that I started with a RPi 2 Model B. Will a RPi4 accept this hat? TL;DR: Does a RPi4 accept a Pi Hat designed for RPi 2 B? Or is there a break in ...
user avatar
  • 644
1 vote
2 answers
624 views

USB ports on USB hat not recognised

I have a setup that uses 4 USB cameras, a USB cell modem and a USB weather station. I deal with this by adding a powered USB hub. I just bought a Waveshare USB hat which looked like a tidier solution. ...
user avatar
  • 133
1 vote
1 answer
2k views

Stacking multiple TV hats

Is it possible to stack multiple TV hats on each other? I would like multiple users to watch TV channels on different frequencies (MUXes).
user avatar
2 votes
0 answers
160 views

Cooling Fan Hat?

The PoE hat has a built-in cooling fan, and even has drivers in Raspbian to automatically turn it on and off based on the CPU temperature. However, any guides to add a temperature-controlled fan seem ...
user avatar
1 vote
1 answer
1k views

No module named 'adafruit_circuitpython_servokit' [closed]

I have a Adafruit PWM hat and I am trying to run play around with some servos. However, when I run this line: from adafruit_servokit import ServoKit It returns: No module named '...
user avatar
2 votes
0 answers
1k views

setup wifi hotspot with 4G hat [closed]

I have bought a 4G hat for my raspberry pi 3B+ (the sim7600 waveshare for europe) and followed these instructions for setup. It is running the latest version of raspbian and I have internet on the ...
user avatar
  • 21