Questions tagged [pi-zero-w]

For questions specific to the Pi-Zero W (with WiFi and Bluetooth)

178 questions with no upvoted or accepted answers
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votes
1answer
418 views

Rasberry Pi zero and 3 bluetooth transfer speed is slow RFCOMM

I am trying to send a series of bytes from the Raspberry Pi zero W to the Raspberry pi 3 via bluetooth. Im using the PyBluez python package. I believe that Raspberry Pi Zero has Bluetooth 4.1 and ...
4
votes
0answers
141 views

Check if a host device is connected to Pi Zero gadget

How can the Pi detect if a host device has been connected, and gather information about that device, when being used as a gadget (such as mass storage). It would be useful if I could detect this ...
3
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0answers
505 views

Bluetooth PAN on the Pi Zero W

I have the following problem: I want to host a webserver on my Pi Zero W and access it over Bluetooth. To achieve this i tried to use PAN as underlying layer. The first time i followed this post. Most ...
3
votes
1answer
2k views

Camera Module V2 working on Raspberry Pi 3 but not on Raspi Zero W

I have a new Camera Module V2 that I tried to hook up with a new Raspberry Pi Zero W with this adapter cable. When I call raspistill -o test.jpg I get mmal: Cannot read camera info, keeping the ...
2
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0answers
26 views

Pin Crosstalk Issue

I'm working on a quick project with my dad for his condo. He wanted to setup a bunch of moisture sensors around the condo near sources of water (sinks, bathtubs, toilets, etc), which, if triggered, ...
2
votes
0answers
25 views

Dropped wifi packets from Pi Zero W to Pi 3B+

We're trying to build a system where a master Pi 3B+ controls a dozen (or more) Pi Zero W clients - all running the latest raspbian (as of 18:00 EDT today) - in an isolated WiFi island (no ...
2
votes
0answers
98 views

Detect if a host is connected (gadget mode)

Device: Raspberry Pi Zero W v1.1 State: Pi Zero is running in gadget mode, acting as a USB Mass Storage device (seen by / mounted on a MacBook Pro). Question: What is the best way to detect whether ...
2
votes
0answers
255 views

Raspberry Pi Zero W Alexa Microphone Not detecting, but speaker works

So I have looked online and I even got different mics and adapters to get this working, but it still doesn't work. I was able to successfully setup my Alexa Pi on the RPi Zero W, because when I boot ...
2
votes
0answers
83 views

Pi Zero W - cgroup_cpuset not available

Even though the contents of /boot/cmdline.txt seem right... $ cat /boot/cmdline.txt dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=PARTUUID=a435ca9f-02 rootfstype=ext4 elevator=...
2
votes
0answers
266 views

What is the maximum clients a Raspberry Pi 3 B+ access point can handle?

I have setup a RPi 3B+ as access point using this tutorial: https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md I have a few dozens of RPi Zero's that connect to the AP. ...
2
votes
3answers
390 views

Connecting multiple load cells Pi Zero W to read individual values

I have a project in mind where I want to measure the weight and position of an item on a shelf. The idea was to mount the shelf on a load cell in each end and then get the weight and ratio between ...
2
votes
1answer
59 views

fork() Process Issue on Channel Switching via Rotary Encoder

I have KY040 rotary switcher(encoder) as shown below picture. It is the scenario that there are 5 radio stations(simple html url) in urls.txt which are read into stations list in radyoCS.py, at every ...
2
votes
0answers
824 views

Both speaker and microphone via I2S

I got the exact same error as someone asked on the raspberry pi forums. But no solution was found yet. https://www.raspberrypi.org/forums/viewtopic.php?t=183617 I've connected max98357-i2s to the ...
2
votes
0answers
364 views

Pi zero with Pi can video steaming stability issues

I wanted to setup my pi zero and pi camera as a rstp streaming cctv camera. I tried motion, but this ran the pi at 100% cpu utilisation and I didn't need motion capture as a I have a seperate (motion) ...
2
votes
1answer
138 views

Abysmal data transfer rates using WinSCP with Pi Zero W

I am getting no more than 300KB/s (occasionally dipping below 100KB/s) transferring files from Pi Zero W wirelessly to Windows 7 machine on same network using WinSPC. I have done the following so far:...
2
votes
0answers
79 views

pi zero W as remote ethernet jack / internet access for satellite TV receiver

I've got a pi Zero W that I'd like to use to support a wireless network for my satellite TV tuner. The tuner has an ethernet jack, but running cable to it is problematic... I've got a ...
2
votes
1answer
237 views

Pi Zero, Retropie on top of Raspbian?

I know you can install RetroPie on top of Raspbian on a Pi 3 but what about a Zero W? Do I need to get a different setup script and install RetroPie or do you just do everything the same way and it ...
1
vote
1answer
28 views

C Raspberry Pi Zero w, read out button matrix

I have trouble reading out an button matrix with my raspberry pi zero w. I am using pigpio for reading out the gpios, but I don't think this is a software issue. This is my source code: #include &...
1
vote
1answer
25 views

Programming MLX90640 to display what I want

Yay. Got my MLX90640 working and boy it works great. However, the ambient temp of around 20C keeps showing as a green background and i would like it to be blue or even grey. Has anyone attempted to ...
1
vote
0answers
18 views

Raspberry pi zero as keyboard controlled over wifi possible?

Hello I want to have a pi zero W create a wifi hotspot(no internet connection). I then want to connect to the wifi hotspot and ssh into the pi. From there i want it to send keystrokes as a HID ...
1
vote
1answer
37 views

Why Raspberry Pi Zero W is missing to log data constantly every second?

I'm doing a project where I want to record IMU (Inertial Measurement Unit) readings. I want to use pretty high sampling frequency and I'm using Raspberry Pi Zero W to send PWM signal of 800Hz to ...
1
vote
4answers
100 views

Connecting Raspberry Pi Zero W to ethernet and serving as WiFi access point

I have an ethernet port in a room where I would like to improve the WiFi connection, and I have a Raspberry Pi Zero W lying around. Is there a way I can connect the Pi to the ethernet port and have ...
1
vote
1answer
18 views

Wireless Transparent Proxy Troubleshooting

I'm someone who has very little technical experience but became interested in the idea of a transparent Tor proxy. I'm well aware that this isn't a secure implementation but I thought I could learn a ...
1
vote
0answers
34 views

Waking computer with raspberry pi zero usb keyboard gadget

I've been trying to set up a raspberry pi zero as a keyboard gadget, hoping i could wake a laptop (No ethernet) with it. I would also be able to encrypt it and send the password, which is an added ...
1
vote
0answers
65 views

Streaming music from raspotify to bluetooth audio speaker

I'm trying to create a raspberry pi which streams spotify music to a bluetooth speaker. I have a raspberry pi zero w with the latest version of raspbian stretch lite. I have my bluetooth connection ...
1
vote
1answer
93 views

Raspberry Pi Zero W solar power setup

Good day, I have a Raspberry Pi Zero W that I would like to deploy onto a tower that is supplied with 12VDC power from a photovoltaic solar panel. I'm currently looking at powering the Pi Zero W ...
1
vote
0answers
30 views

Cannot SSH from pi zero to pi zero over OTG USB

I am running Raspbian Stretch Lite Linux testpi1 4.14.98+ #1200 Tue Feb 12 20:11:02 GMT 2019 armv6l GNU/Linux I am able to SSH to my pi zero over the OTG USB cable as many guides online have ...
1
vote
1answer
15 views

Using additional Raspberry Pi wifi connections

Successfully I connected my Pi with my wireless connection and it's working properly. But if I need to go outside like a college or my friend's home. Then how will I connect the Pi?
1
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0answers
47 views

wifi setup after changing wifi-direct settings

I followed these wonderful instructions on setting up wifi-direct, but now I need to be able to set up regular wifi after that. Here's what I'm trying to do. Trying to set up the Pi Zero W to do what ...
1
vote
1answer
49 views

Can't get HC-SC04 Sensor to work

I'm using a Pi Zero W with a soldered project board to interface two ir Sensors and trying to make an HC-SR04 sensor work. I'm using the 5v supply to power all three sensors. I've set up a Motion.py ...
1
vote
0answers
43 views

DS18B20 temp sensor works on Pi 3B+ but not Zero W

I have a breadboard prototype working with a cabled (waterproof and regular temp) DS18B20 sensor and a AM2302 sensor on a 3B+. All is well with it recording at a set interval from each sensor. I'd ...
1
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0answers
15 views

Wifi stops working (on my laptop) after connecting rpi as ethernet gadget

So I am using a raspberry pi zero W as an ethernet gadget. I got ssh working and the RNDIS/Ethernet Gadget thing working so I can log into the pi using pi@raspberry.local. I even got VNC to work so ...
1
vote
0answers
125 views

Can't connect to Raspberry Pi Zero W over USB SSH

I'm trying to login to my Raspberry Pi Zero W via SSH over USB, as in this article https://desertbot.io/blog/ssh-into-pi-zero-over-usb and this one https://www.thepolyglotdeveloper.com/20 ... cable-...
1
vote
0answers
149 views

Error unknown machine command despite compiling without errors

I recently made a project using opencv 4 on my raspberry pi 3 b+, but then decided to port the whole project to a new raspberry pi zero, as I want to make it a permanent setup and want to keep my py 3 ...
1
vote
0answers
46 views

Toggle UART (enable_uart=1) without rebooting

Which pins can can I manually toggle to enable or disable UART on a Raspberry Pi Zero or 3B+ without rebooting? As I understand, /boot/config.txt is parsed before Linux is started, but I don't mind ...
1
vote
0answers
46 views

Max number of DC motors supported on a pi zero w

I'm in possession of a pi zero w. I have purchased two L9110s modules and connected 2 coin vibration motors (80mA) on each of them. The modules are powered by an external power battery bank rated 5V ...
1
vote
0answers
58 views

raspistill quality issues: single photos vs timelapse

For some reason there seems to be a huge jump in quality when using the -tl switch for a timelapse over individual pictures. raspistill -t 1 -o /mnt/usb128/photos/test%016d.jpg -ex auto -awb auto --...
1
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0answers
124 views

Use mobile as remote via Bluetooth

I got Libreelec on my Pi Zero W, and I want to use my phone as remote over Bluetooth. How can I do that?
1
vote
1answer
158 views

What Bluetooth profiles does the Pi Zero W natively support?

I've started looking for tutorials for Pi's and Bluetooth, but I don't have any experience with Bluetooth and Linux, and it seems that the Bluetooth stack on Raspbian and/or Linux is not full featured ...
1
vote
0answers
59 views

Cloned Raspi Zero W boots into Emergency Mode

I have a Raspi (3+) that for whatever reason I need to clone to use as a temporary backup for downtime later on. After realising the effort needed to recreate it from scratch, I cloned its entire SD ...
1
vote
1answer
84 views

Trouble with using RPi Zero W as USB keyboard

I'm using a RPi Zero W for this exercise. I downloaded 2018-11-13-raspbian-stretch-full.zip and installed it onto a 32G microSD card: sudo dd bs=4M if=2018-11-13-raspbian-stretch-full.img of=/dev/...
1
vote
1answer
350 views

Raspberry Pi Zero as webcam

I read some case, like using dwc2 and g_webcam in /boot/config and cmdline. but hard to understand and doesn't work. and can't find a tutorial, there are some tutorials only about serial and ethernet. ...
1
vote
0answers
56 views

Upnp for Rpi zero w with pi cam

I am trying to implement the upnp on my RPI ip cam. The goal is to make it portable so I can use it anywhere (with just the wifi SSID and pwd) without having to port forward everytime I have to deal ...
1
vote
1answer
419 views

Pi Zero W Wifi repeater with OpenVPN

Im trying to setup a Pi Zero W as a wifi repeater with openVPN without using a USB wifi dongle, as a tiny travel router. I tried using this tutorial - by @ingo raspberry-pi-zero-w-as-a-wifi-repeater ...
1
vote
0answers
882 views

Pi-Hole + Unbound ==> Unbound anchor not ok // SERVFAIL

Problem with unbound and pi-hole I followed the official guide for installing Unbound alongside Pi-hole for my network, see Setting up Pi-hole as a recursive DNS server solution A week ago I first ...
1
vote
0answers
125 views

CM3 - How can I use USB_OTG on carrier board? How does this differ from CMIO board?

Currently trying to figure out how to setup USB_OTG on the CM3 using my carrier board. I posted on the RPI forums and got an answer which was to connect pin 4 (ID) on a usb micro AB connector ...
1
vote
0answers
449 views

SSH through bluetooth to raspberry pi using rfcomm. Nothing appears on bluetooth devices on my PC

I followed https://hacks.mozilla.org/2017/02/headless-raspberry-pi-configuration-over-bluetooth/ I see nothing on the bluetooth devices in my cellphone or computer. Here's the output of my raspberry ...
1
vote
0answers
108 views

Bluetooth pairing with pre-shared-key

I want to pair my Raspberry Pi zero with my android phone using a pre-shared key. By using bluetoothctl I can pair both devices but not with a pre-shared key only either with no key at all or with a ...
1
vote
0answers
575 views

Raspberry Pi Zero W + Adafruit Thermal Printer Only printing limited number of characters

I'm trying to set up an Adafruit Thermal printer Mode: CSN-A2-T with a Raspberry Pi Zero W that is running Raspbian GNU/Linux 9.4 (which I believe is Raspbian Jessie). I need to be able to print ...
1
vote
0answers
265 views

Bluetooth Network access point problems

Hi we have two Pis (A Pi3 acting as a server/gateway and a Pi0W acting as the client) and we are trying to get them to communicate. They are connected via Bluetooth, and the Pi3 has a NAP server ...