# Latest **URL:** https://forum.sunfounder.com/latest.md [Latest](https://forum.sunfounder.com/latest.md) · [Categories](https://forum.sunfounder.com/categories.md) · [Tags](https://forum.sunfounder.com/tags.md) --- ## [Can't get 74HC595 and 4 digit display to work](https://forum.sunfounder.com/t/cant-get-74hc595-and-4-digit-display-to-work/5013)
**Author:** [@Fireman9143](https://forum.sunfounder.com/u/Fireman9143)\ **Replies:** 0\ **Last updated:** [September 25, 2026, 12:03am UTC](https://forum.sunfounder.com/t/cant-get-74hc595-and-4-digit-display-to-work/5013 "2026-09-25T00:03:00Z")
I have the Fusion hat on a Pi5 and am going through the python examples. Lesson 1.8 does not work. I have spent days using chatgpt to try to troubleshoot and even ordered more 74HC595 chips. There seems to be a proble… --- ## [Pidog V2 with PI 5 4gb crashing often running demo programs](https://forum.sunfounder.com/t/pidog-v2-with-pi-5-4gb-crashing-often-running-demo-programs/4997)
**Author:** [@lapy5](https://forum.sunfounder.com/u/lapy5)\ **Replies:** 3\ **Last updated:** [September 24, 2026, 6:05pm UTC](https://forum.sunfounder.com/t/pidog-v2-with-pi-5-4gb-crashing-often-running-demo-programs/4997 "2026-09-24T18:05:21Z")
Hello, I recently purchased a pidog V2 with a raspberry 5 4 GB. When I try to run the example script “1\_wake\_up.py” it works for about 10 to 20 seconds and then it crashes. Sometimes it crashes while doing the initiali… --- ## [No sound playing back wav file from PiCar-X Example 16. Voice Controlled Car with Vosk](https://forum.sunfounder.com/t/no-sound-playing-back-wav-file-from-picar-x-example-16-voice-controlled-car-with-vosk/4935)
**Author:** [@Will](https://forum.sunfounder.com/u/Will)\ **Replies:** 24\ **Last updated:** [September 24, 2026, 1:55pm UTC](https://forum.sunfounder.com/t/no-sound-playing-back-wav-file-from-picar-x-example-16-voice-controlled-car-with-vosk/4935 "2026-09-24T13:55:03Z")
The first part of this example has you do a microphone check. I did this, but when I try to play back the recorded wav file (aplay test.wav), there is no sound. I checked and neither the microphone nor the speaker are … --- ## [Pironman 4 - fan starts briefly, then stops](https://forum.sunfounder.com/t/pironman-4-fan-starts-briefly-then-stops/5010)
**Author:** [@MartinTheWanderer](https://forum.sunfounder.com/u/MartinTheWanderer)\ **Replies:** 7\ **Last updated:** [September 24, 2026, 10:27am UTC](https://forum.sunfounder.com/t/pironman-4-fan-starts-briefly-then-stops/5010 "2026-09-24T10:27:56Z")
Hey all! I re-activated my Pironman 4 with a RasPi 4B. Fresh SD card with fresh install of RasPi OS. Installed Pironman without issues. Display on the case works fine. Fan: says nothing. When I manually do a pironman st… --- ## [Pironman5 service failed](https://forum.sunfounder.com/t/pironman5-service-failed/4990)
**Author:** [@mandolyn](https://forum.sunfounder.com/u/mandolyn)\ **Replies:** 9\ **Last updated:** [September 23, 2026, 9:49am UTC](https://forum.sunfounder.com/t/pironman5-service-failed/4990 "2026-09-23T09:49:20Z")
I reinstalled pironman5 software like mentioned in tried all articles I found in this forum, but it still is not working. sudo systemctl status pironman5 × pironman5.service - pironman5 service Loaded: loaded (/etc/… --- ## [Different versions of the robot hat?](https://forum.sunfounder.com/t/different-versions-of-the-robot-hat/5002)
**Author:** [@greenpea](https://forum.sunfounder.com/u/greenpea)\ **Replies:** 6\ **Last updated:** [September 21, 2026, 6:57pm UTC](https://forum.sunfounder.com/t/different-versions-of-the-robot-hat/5002 "2026-09-21T18:57:17Z")
In my kit is a robot hat 3.3, it resembles the drawing in the paper assembly manual. But in the online manuals there is a different robot hat having an usb-c connector amongst others. Also the online instructions mention… --- ## [Raphael Kit Lesson 2.1.6 for Raspberry Pi (Rotary Encoder Module)](https://forum.sunfounder.com/t/raphael-kit-lesson-2-1-6-for-raspberry-pi-rotary-encoder-module/5006)
**Author:** [@ErinW](https://forum.sunfounder.com/u/ErinW)\ **Replies:** 1\ **Last updated:** [September 21, 2026, 8:33am UTC](https://forum.sunfounder.com/t/raphael-kit-lesson-2-1-6-for-raspberry-pi-rotary-encoder-module/5006 "2026-09-21T08:33:54Z")
A couple of things 3.3V or 5V? The Schematic Diagram does not specify. The Wiring Example shows it going to 3.3V BUT the text directly under the wiring example says to connect \[+\] to 5V. If you edit the wiring exampl… --- ## [Raphael Kit Lesson 2.1.5 for Raspbarry Pi (Tilt Switch)](https://forum.sunfounder.com/t/raphael-kit-lesson-2-1-5-for-raspbarry-pi-tilt-switch/5005)
**Author:** [@ErinW](https://forum.sunfounder.com/u/ErinW)\ **Replies:** 3\ **Last updated:** [September 21, 2026, 8:31am UTC](https://forum.sunfounder.com/t/raphael-kit-lesson-2-1-5-for-raspbarry-pi-tilt-switch/5005 "2026-09-21T08:31:38Z")
Hey, two things on this one. The ‘Required Components’ section shows a 1kΩ resistor but the ‘Schematic Diagram’ and the ‘Wiring Example’ both show using a 10kΩ resistor. Which should it be? But more importantly… I … --- ## [Dual boot on pironman5 max](https://forum.sunfounder.com/t/dual-boot-on-pironman5-max/3974)
**Author:** [@fozzy235](https://forum.sunfounder.com/u/fozzy235)\ **Replies:** 14\ **Last updated:** [September 20, 2026, 9:37am UTC](https://forum.sunfounder.com/t/dual-boot-on-pironman5-max/3974 "2026-09-20T09:37:48Z")
All I can find on this topic is that one OS on NVME and the other on SD card, is that true or can you have different OS’s on the two NVME option --- ## [I want understand the code about the interactions between instances of the Servo and PWM classes of robot\_hat with picarx](https://forum.sunfounder.com/t/i-want-understand-the-code-about-the-interactions-between-instances-of-the-servo-and-pwm-classes-of-robot-hat-with-picarx/5004)
**Author:** [@curiosity](https://forum.sunfounder.com/u/curiosity)\ **Replies:** 3\ **Last updated:** [September 20, 2026, 9:20am UTC](https://forum.sunfounder.com/t/i-want-understand-the-code-about-the-interactions-between-instances-of-the-servo-and-pwm-classes-of-robot-hat-with-picarx/5004 "2026-09-20T09:20:05Z")
I observed the traces when instantiating the Picarx class. To do this, I inserted “print” statements in a specific format. The logs are formatted as follows: " {format } ::= {Num\_Line} {key} {level} {method name} { da… --- ## [Problem reading temp with ds18b20](https://forum.sunfounder.com/t/problem-reading-temp-with-ds18b20/4981)
**Author:** [@george22](https://forum.sunfounder.com/u/george22)\ **Replies:** 9\ **Last updated:** [September 18, 2026, 9:22am UTC](https://forum.sunfounder.com/t/problem-reading-temp-with-ds18b20/4981 "2026-09-18T09:22:17Z")
Hi First time poster. I am running pico 2 w and have a ds18b20 connected. I am using Thonny. This is the code i am using: import time import machine import onewire, ds18x20 # the device is on GPIO12 dat = machine.Pin… --- ## [Pironman 5 / 5 Max – Home Assistant Container Integration](https://forum.sunfounder.com/t/pironman-5-5-max-home-assistant-container-integration/4995)
**Author:** [@ChristophKomenda](https://forum.sunfounder.com/u/ChristophKomenda)\ **Replies:** 3\ **Last updated:** [September 17, 2026, 8:47pm UTC](https://forum.sunfounder.com/t/pironman-5-5-max-home-assistant-container-integration/4995 "2026-09-17T20:47:51Z")
Hi everyone :waving\_hand: I created a local Home Assistant custom integration for the SunFounder Pironman 5 and Pironman 5 Max. The integration communicates directly with the local Pironman REST API — no MQTT broker, c… --- ## [What OS on a PI 5 for a picar-x](https://forum.sunfounder.com/t/what-os-on-a-pi-5-for-a-picar-x/4999)
**Author:** [@greenpea](https://forum.sunfounder.com/u/greenpea)\ **Replies:** 2\ **Last updated:** [September 17, 2026, 2:28pm UTC](https://forum.sunfounder.com/t/what-os-on-a-pi-5-for-a-picar-x/4999 "2026-09-17T14:28:51Z")
Hi, owner of a picar-x kit (labeled 2023-10-20 on the box) that’s getting build now. What OS should I use with a PI 5? Thanks for your time Pea --- ## [I want understand the code of PWD and I2C class of robot\_hat with picarx](https://forum.sunfounder.com/t/i-want-understand-the-code-of-pwd-and-i2c-class-of-robot-hat-with-picarx/4980)
**Author:** [@curiosity](https://forum.sunfounder.com/u/curiosity)\ **Replies:** 2\ **Last updated:** [September 17, 2026, 1:20pm UTC](https://forum.sunfounder.com/t/i-want-understand-the-code-of-pwd-and-i2c-class-of-robot-hat-with-picarx/4980 "2026-09-17T13:20:41Z")
The \_\_ init \_\_\_ method of picarx.py creat 3 instance of SERVO each is on canal P0, P1, P2, servo\_pins:list=\[‘P0’, ‘P1’, ‘P2’\] 51 self.cam\_pan = Servo(servo\_pins\[0\]) 52 self.cam\_tilt = Servo(servo\_pi… --- ## [Obstacle Avoidance](https://forum.sunfounder.com/t/obstacle-avoidance/4965)
**Author:** [@ashishjain](https://forum.sunfounder.com/u/ashishjain)\ **Replies:** 9\ **Last updated:** [September 17, 2026, 10:06am UTC](https://forum.sunfounder.com/t/obstacle-avoidance/4965 "2026-09-17T10:06:34Z")
My new raspeberry picar 3b+ was working well until I run sudo python3 4.obstacle\_avoidance.py , it keeps spamming the phrase “distance:-1” and the Picar-x keeps going backwards in a circle continously. --- ## [Help,help,help - I'm going crazy with the PI5](https://forum.sunfounder.com/t/help-help-help-im-going-crazy-with-the-pi5/4456)
**Author:** [@terry](https://forum.sunfounder.com/u/terry)\ **Replies:** 8\ **Last updated:** [September 17, 2026, 10:02am UTC](https://forum.sunfounder.com/t/help-help-help-im-going-crazy-with-the-pi5/4456 "2026-09-17T10:02:16Z")
I thought I was buying the best… I have a RPi5 16GB in a Pironman5 Max case with an NVME drive and can only get it to boot about once every 15-20 times. My CoPilot gives me advice which never works, and now wants me to … --- ## [Picar-x Servos Jerk upon Initialization of Picarx Library Except After Reboot](https://forum.sunfounder.com/t/picar-x-servos-jerk-upon-initialization-of-picarx-library-except-after-reboot/4933)
**Author:** [@RichardM](https://forum.sunfounder.com/u/RichardM)\ **Replies:** 12\ **Last updated:** [September 16, 2026, 10:04am UTC](https://forum.sunfounder.com/t/picar-x-servos-jerk-upon-initialization-of-picarx-library-except-after-reboot/4933 "2026-09-16T10:04:37Z")
After zeroing and calibrating the servos on my Picar-x with Raspberry Pi 4, I tested its movement with the 2.move.py script. The script ran perfectly with all the expected movements. Upon running this script a second t… --- ## [Having trouble calibrating picrawler](https://forum.sunfounder.com/t/having-trouble-calibrating-picrawler/4988)
**Author:** [@dlorfel](https://forum.sunfounder.com/u/dlorfel)\ **Replies:** 7\ **Last updated:** [September 16, 2026, 10:02am UTC](https://forum.sunfounder.com/t/having-trouble-calibrating-picrawler/4988 "2026-09-16T10:02:00Z")
I’m confused about calibrating pi crawler. -I installed all servos and have everything setup. They are lined up with all screws in the correct place. I am assuming that is correct. -I have been running the servos wit… --- ## [Raphael Kit Lesson 2.1.2 for Raspberry Pi (Micro Switch)](https://forum.sunfounder.com/t/raphael-kit-lesson-2-1-2-for-raspberry-pi-micro-switch/4973)
**Author:** [@ErinW](https://forum.sunfounder.com/u/ErinW)\ **Replies:** 9\ **Last updated:** [September 15, 2026, 8:07am UTC](https://forum.sunfounder.com/t/raphael-kit-lesson-2-1-2-for-raspberry-pi-micro-switch/4973 "2026-09-15T08:07:05Z")
Notes/Questions on this lesson: Confusing GPIO assignments for LED1 and LED2 In the schematic diagram, you have LED1 connected to GPIO27 and LED2 connected to GPIO22. In the wiring example you show the YELLOW LED c… --- ## [Can't connect to wifi on EzBlock for my Picrawler](https://forum.sunfounder.com/t/cant-connect-to-wifi-on-ezblock-for-my-picrawler/4992)
**Author:** [@s1mply](https://forum.sunfounder.com/u/s1mply)\ **Replies:** 1\ **Last updated:** [September 14, 2026, 9:44am UTC](https://forum.sunfounder.com/t/cant-connect-to-wifi-on-ezblock-for-my-picrawler/4992 "2026-09-14T09:44:33Z")
Hi, I’m using a PiCrawler with a Raspberry Pi Zero 2 W and the EZBlock pre-installed image. Bluetooth works correctly: EZBlock Studio sees the crawler and connects to it. The problem is the Wi-Fi Quick Configuration. It… --- ## [Pironman 5 NVMe not detected - PCIe stuck at "link down" (Acer FA100)](https://forum.sunfounder.com/t/pironman-5-nvme-not-detected-pcie-stuck-at-link-down-acer-fa100/4993)
**Author:** [@poshan](https://forum.sunfounder.com/u/poshan)\ **Replies:** 1\ **Last updated:** [September 14, 2026, 9:30am UTC](https://forum.sunfounder.com/t/pironman-5-nvme-not-detected-pcie-stuck-at-link-down-acer-fa100/4993 "2026-09-14T09:30:15Z")
Hardware: Raspberry Pi 5, Pironman 5 case, Acer FA100 256GB NVMe SSD (PCIe Gen3 x4) Issue: NVMe drive is not detected. lsblk shows only mmcblk0 (SD card), no nvme0n1 at all. dmesg shows the PCIe bridge for the NVMe sid… --- ## [Fusion Hat Not working-picarx](https://forum.sunfounder.com/t/fusion-hat-not-working-picarx/4967)
**Author:** [@dumebi](https://forum.sunfounder.com/u/dumebi)\ **Replies:** 3\ **Last updated:** [September 11, 2026, 9:01am UTC](https://forum.sunfounder.com/t/fusion-hat-not-working-picarx/4967 "2026-09-11T09:01:25Z")
Hello SunFounder Support, I am requesting a replacement for my PiCar-X Robot HAT due to a hardware failure on the I2C control circuit. The Raspberry Pi boots perfectly, and I can SSH into it without issue. The I2S audio… --- ## [la foto street view è vecchia. Abbiamo ristrutturato l'immobile. dobbiamo sostituirla](https://forum.sunfounder.com/t/la-foto-street-view-e-vecchia-abbiamo-ristrutturato-limmobile-dobbiamo-sostituirla/4986)
**Author:** [@BANKBRI](https://forum.sunfounder.com/u/BANKBRI)\ **Replies:** 1\ **Last updated:** [September 11, 2026, 8:59am UTC](https://forum.sunfounder.com/t/la-foto-street-view-e-vecchia-abbiamo-ristrutturato-limmobile-dobbiamo-sostituirla/4986 "2026-09-11T08:59:35Z")
Saya mengalami kesulitan masuk ke Ras Pi 4. Saya mencoba melakukan flashing dengan Balena dan (setelah membaca dokumentasi Sunfounder) Ras Pi Imager. Setelah beberapa jam berdiskusi dengan Chat GPT, Claude menyarankan so… --- ## [Initial login for PiCar-X EZ Block](https://forum.sunfounder.com/t/initial-login-for-picar-x-ez-block/4984)
**Author:** [@Newmy](https://forum.sunfounder.com/u/Newmy)\ **Replies:** 1\ **Last updated:** [September 11, 2026, 8:02am UTC](https://forum.sunfounder.com/t/initial-login-for-picar-x-ez-block/4984 "2026-09-11T08:02:00Z")
I was having trouble logging into the Ras Pi 4. I tried flashing with Balena and (after reading the Sunfounder docs) Ras Pi Imager. After a couple of hours back and forth with Chat GPT, Claude suggested the fix that … --- ## [Pironman Power Supply Problem](https://forum.sunfounder.com/t/pironman-power-supply-problem/1318)
**Author:** [@dev](https://forum.sunfounder.com/u/dev)\ **Replies:** 13\ **Last updated:** [September 10, 2026, 10:28am UTC](https://forum.sunfounder.com/t/pironman-power-supply-problem/1318 "2026-09-10T10:28:55Z")
Purchased the Pironman 5 recently. Build went without a hitch. Unfortunately when i use an official raspberry pi 5 power supply the unit receives no power and wont post. Tried my samsung phone charger and the unit functi… --- ## [Pidog V2 not working](https://forum.sunfounder.com/t/pidog-v2-not-working/4917)
**Author:** [@TragicVizionsz](https://forum.sunfounder.com/u/TragicVizionsz)\ **Replies:** 18\ **Last updated:** [September 9, 2026, 10:08am UTC](https://forum.sunfounder.com/t/pidog-v2-not-working/4917 "2026-09-09T10:08:16Z")
Hi all, I’m very new to coding and I recently bought the Pidog V2. I’m certain I plugged everything in correctly, but when I run the calibration modes, nothing I mean nothing happens at all. When I press “zero” to calibr… --- ## [Fusion Ai Kit - Servo options](https://forum.sunfounder.com/t/fusion-ai-kit-servo-options/4978)
**Author:** [@Xrayspex](https://forum.sunfounder.com/u/Xrayspex)\ **Replies:** 2\ **Last updated:** [September 8, 2026, 9:38pm UTC](https://forum.sunfounder.com/t/fusion-ai-kit-servo-options/4978 "2026-09-08T21:38:10Z")
The Sunfounder AI Kit comes with small SG90 servos which are connected directly to the AI hat. But I want to use bigger servos (like MG996 which typically operate at 1.8A). Normally an external power supply is necessar… --- ## [Raphael Kit Micro Switches do not connect in breadboard](https://forum.sunfounder.com/t/raphael-kit-micro-switches-do-not-connect-in-breadboard/4969)
**Author:** [@ErinW](https://forum.sunfounder.com/u/ErinW)\ **Replies:** 2\ **Last updated:** [September 8, 2026, 2:18pm UTC](https://forum.sunfounder.com/t/raphael-kit-micro-switches-do-not-connect-in-breadboard/4969 "2026-09-08T14:18:41Z")
The micro switches that came in the Raphael Kit have really short pins and do not make connection in the breadboard. They just fall over when even bumped. I tried using the F-M jumper wires but those are too loose. Wha… --- ## [R3 Board Update Help](https://forum.sunfounder.com/t/r3-board-update-help/4938)
**Author:** [@toriahanna1](https://forum.sunfounder.com/u/toriahanna1)\ **Replies:** 5\ **Last updated:** [September 7, 2026, 4:13pm UTC](https://forum.sunfounder.com/t/r3-board-update-help/4938 "2026-09-07T16:13:50Z")
So I have the GalaxyRVR, I am trying to reset it currently because I wrote code in Arduino and I want to now switch over to using the Mammoth coding app. I have successfully reset the ESP-32 Cam already. I downloaded th… --- ## [I lost the thumb drive of the picar-X](https://forum.sunfounder.com/t/i-lost-the-thumb-drive-of-the-picar-x/4970)
**Author:** [@martinly](https://forum.sunfounder.com/u/martinly)\ **Replies:** 1\ **Last updated:** [September 7, 2026, 9:34am UTC](https://forum.sunfounder.com/t/i-lost-the-thumb-drive-of-the-picar-x/4970 "2026-09-07T09:34:22Z")
I lost the thumb drive of the picar-X, Where I can find those files for download like the “calibration.py” etc. Thanks! [Next page](https://forum.sunfounder.com/latest.md?page=1)