# Latest **URL:** https://community.sparkfun.com/latest.md [Latest](https://community.sparkfun.com/latest.md) · [Categories](https://community.sparkfun.com/categories.md) · [Tags](https://community.sparkfun.com/tags.md) --- ## [Postcard RTK: Fix instability at speed](https://community.sparkfun.com/t/postcard-rtk-fix-instability-at-speed/68838)
**Author:** [@Jeff\_G](https://community.sparkfun.com/u/Jeff_G)\ **Replies:** 37\ **Last updated:** [October 13, 2026, 10:17pm UTC](https://community.sparkfun.com/t/postcard-rtk-fix-instability-at-speed/68838 "2026-10-13T22:17:31Z")
I have a rover set-up with the following: • Postcard + Portability Shield + Battery. • Cell phone to relay RTK Point Perfect correction to SW maps for recording data. • Postcard set for 10 Hz data collection and Bluet… --- ## [Datalogger IOT not collecting data](https://community.sparkfun.com/t/datalogger-iot-not-collecting-data/69682)
**Author:** [@Joel\_seerey](https://community.sparkfun.com/u/Joel_seerey)\ **Replies:** 2\ **Last updated:** [October 13, 2026, 9:36pm UTC](https://community.sparkfun.com/t/datalogger-iot-not-collecting-data/69682 "2026-10-13T21:36:51Z")
hello I have recently set up a datalogger IOT to collect temperature data from a piece of agricultural harvest equipment. I have wired a 5 volt source directly to the board and noted that all lights on my sensors and dat… --- ## [Gimbal Motor with Encoder - PWM or SPI output?](https://community.sparkfun.com/t/gimbal-motor-with-encoder-pwm-or-spi-output/69744)
**Author:** [@picotrain](https://community.sparkfun.com/u/picotrain)\ **Replies:** 0\ **Last updated:** [October 13, 2026, 9:13pm UTC](https://community.sparkfun.com/t/gimbal-motor-with-encoder-pwm-or-spi-output/69744 "2026-10-13T21:13:12Z")
Hi all, I’m planning to use two ROB-27478 gimbal motors as direct-drive wheel motors on a self-balancing robot. Each motor will run closed-loop FOC (SimpleFOC library) on its own SimpleFOCmini driver, powered from a 3S … --- ## [NVIDIA Jetson Orin™ Nano Display issue](https://community.sparkfun.com/t/nvidia-jetson-orin-nano-display-issue/69743)
**Author:** [@e2738729](https://community.sparkfun.com/u/e2738729)\ **Replies:** 0\ **Last updated:** [October 13, 2026, 9:04pm UTC](https://community.sparkfun.com/t/nvidia-jetson-orin-nano-display-issue/69743 "2026-10-13T21:04:48Z")
Dear Sparkfun Staffs, I purchased a brand new NVIDIA Jetson Orin Nano and I noticed that the the screen from the DP Port has been flickering from beginning. After a few times of flickering, now it completely not connect… --- ## [Can I power ZED-F9P using qwiic cable to M5Stack Tab5 grove port?](https://community.sparkfun.com/t/can-i-power-zed-f9p-using-qwiic-cable-to-m5stack-tab5-grove-port/69742)
**Author:** [@CoreyK](https://community.sparkfun.com/u/CoreyK)\ **Replies:** 0\ **Last updated:** [October 13, 2026, 7:57pm UTC](https://community.sparkfun.com/t/can-i-power-zed-f9p-using-qwiic-cable-to-m5stack-tab5-grove-port/69742 "2026-10-13T19:57:21Z")
Greetings, first post here. I’m the senior GIS admin for a small municipality in FL and I’m doing some research on building an RTK device. I’ve built some extensive code that uses a cheapo NEO-M6, runs on an M5Stack Tab5… --- ## [Sparkfun Datalogger IoT Sensors are not reconized](https://community.sparkfun.com/t/sparkfun-datalogger-iot-sensors-are-not-reconized/69734)
**Author:** [@Phil1](https://community.sparkfun.com/u/Phil1)\ **Replies:** 6\ **Last updated:** [October 13, 2026, 7:14pm UTC](https://community.sparkfun.com/t/sparkfun-datalogger-iot-sensors-are-not-reconized/69734 "2026-10-13T19:14:06Z")
Order #000461769 Phil Spargo Both the INA228 and the ADS1219 are not being found on the Qwiic bus. I have power to the sensors, I’ve done a factory restore several times. The only sensors found are the internal one on… --- ## [Broken GitHub link and missing MicroPython package for Qwiic STC31 (404 Error)](https://community.sparkfun.com/t/broken-github-link-and-missing-micropython-package-for-qwiic-stc31-404-error/69717)
**Author:** [@onyournana](https://community.sparkfun.com/u/onyournana)\ **Replies:** 3\ **Last updated:** [October 13, 2026, 6:57pm UTC](https://community.sparkfun.com/t/broken-github-link-and-missing-micropython-package-for-qwiic-stc31-404-error/69717 "2026-10-13T18:57:33Z")
Hello SparkFun Support Team, I am currently working with the SparkFun Qwiic CO2 Sensor - STC31 using an ESP32 (IoT RedBoard) running MicroPython. I followed the official Hookup Guide under the “MicroPython Installation… --- ## [Problem to execute SimpleFOC code on SparkFun RedBoard Artemis ATP?](https://community.sparkfun.com/t/problem-to-execute-simplefoc-code-on-sparkfun-redboard-artemis-atp/69735)
**Author:** [@B](https://community.sparkfun.com/u/B)\ **Replies:** 2\ **Last updated:** [October 13, 2026, 6:06pm UTC](https://community.sparkfun.com/t/problem-to-execute-simplefoc-code-on-sparkfun-redboard-artemis-atp/69735 "2026-10-13T18:06:28Z")
Hello. We use the SparkFun RedBoard Artemis ATP microcontroller board to control two gimbal SparkFun 12V 3-Phase BLDC motors with encoders AS5048A via two SparkFun 11V Brushless TMC6300 motor-drivers. A short SimpleFOC c… --- ## [DB9 Male breakout (BOB-29195) incorrect](https://community.sparkfun.com/t/db9-male-breakout-bob-29195-incorrect/69723)
**Author:** [@ttt](https://community.sparkfun.com/u/ttt)\ **Replies:** 5\ **Last updated:** [October 13, 2026, 5:45pm UTC](https://community.sparkfun.com/t/db9-male-breakout-bob-29195-incorrect/69723 "2026-10-13T17:45:52Z")
I purchased a couple of sparkfun DB9 breakout boards to build an RS-232 sniffer: one with a male DB9, the other with a female DB9. P/Ns are BOB-29195 (male) and BOB-29196 (female). These boards route the pins from the … --- ## [Technical Support Request: Three MyoWare 2.0 Sensors for a Muscle Fatigue Monitoring Graduation Project](https://community.sparkfun.com/t/technical-support-request-three-myoware-2-0-sensors-for-a-muscle-fatigue-monitoring-graduation-project/69739)
**Author:** [@Dalia\_Alagawy](https://community.sparkfun.com/u/Dalia_Alagawy)\ **Replies:** 0\ **Last updated:** [October 13, 2026, 10:44am UTC](https://community.sparkfun.com/t/technical-support-request-three-myoware-2-0-sensors-for-a-muscle-fatigue-monitoring-graduation-project/69739 "2026-10-13T10:44:14Z")
Hello SparkFun Technical Support Team, I am a university student working on a graduation project called Muscle Fatigue Monitoring System. Our goal is to monitor muscle activity from three different muscles simultaneousl… --- ## [Auth 3.0 board for the ESP32 Apple Accessory example?](https://community.sparkfun.com/t/auth-3-0-board-for-the-esp32-apple-accessory-example/69730)
**Author:** [@bakedlights](https://community.sparkfun.com/u/bakedlights)\ **Replies:** 1\ **Last updated:** [October 13, 2026, 7:19am UTC](https://community.sparkfun.com/t/auth-3-0-board-for-the-esp32-apple-accessory-example/69730 "2026-10-13T07:19:48Z")
Hi everyone, I’m trying to work out what hardware I need to use the ESP32\_BluetoothSerial example from the SparkFun Apple Accessory library to send NMEA location data to an iPhone. I’m stuck on the Auth 3.0 coprocessor … --- ## [Code to control two SparkFun 3-Phase BLDC motors with encoders AS5048A?](https://community.sparkfun.com/t/code-to-control-two-sparkfun-3-phase-bldc-motors-with-encoders-as5048a/69691)
**Author:** [@B](https://community.sparkfun.com/u/B)\ **Replies:** 3\ **Last updated:** [October 13, 2026, 6:59am UTC](https://community.sparkfun.com/t/code-to-control-two-sparkfun-3-phase-bldc-motors-with-encoders-as5048a/69691 "2026-10-13T06:59:29Z")
Hello, I have written a code (in C language) to control two SparkFun 12V 3-Phase BLDC motors with encoders AS5048A Gimbal Motor with Encoder - 12V, 467RPM - SparkFun Electronics via two SparkFun 11V motor-drivers SparkF… --- ## [SWmaps zooming the map in Closer](https://community.sparkfun.com/t/swmaps-zooming-the-map-in-closer/69695)
**Author:** [@navytech](https://community.sparkfun.com/u/navytech)\ **Replies:** 1\ **Last updated:** [October 13, 2026, 3:35am UTC](https://community.sparkfun.com/t/swmaps-zooming-the-map-in-closer/69695 "2026-10-13T03:35:37Z")
Has anymore got SWmap to zoom in closer. Under the About tab , frequency Asked Questions it says go to settings and enable Drawing Mode. This will turn off the basemap and let you zoom in further. I am using a Sumsang ta… --- ## [Having issues with openscale board](https://community.sparkfun.com/t/having-issues-with-openscale-board/69729)
**Author:** [@Zjones](https://community.sparkfun.com/u/Zjones)\ **Replies:** 1\ **Last updated:** [October 12, 2026, 11:05pm UTC](https://community.sparkfun.com/t/having-issues-with-openscale-board/69729 "2026-10-12T23:05:31Z")
Hello, I’m using an Arduino Uno with input from a open scale board (13261). I’m using a 13332 sparkfun load cell. I’ve burned up 2 open scale boards. They both worked for a bit then stopped working. When checking the op… --- ## [Need Redboard assessment](https://community.sparkfun.com/t/need-redboard-assessment/69736)
**Author:** [@Alenagreena](https://community.sparkfun.com/u/Alenagreena)\ **Replies:** 1\ **Last updated:** [October 12, 2026, 10:48pm UTC](https://community.sparkfun.com/t/need-redboard-assessment/69736 "2026-10-12T22:48:44Z")
I ordered kits for my students, and one redboard is not working. When we try to connect it, it does not come up in the list of options on any device with any cord. The lights come on, but they are not like the other stud… --- ## [Pi AI Hat+ 13 TOPS, no power](https://community.sparkfun.com/t/pi-ai-hat-13-tops-no-power/69683)
**Author:** [@rbmgf7](https://community.sparkfun.com/u/rbmgf7)\ **Replies:** 3\ **Last updated:** [October 12, 2026, 10:44pm UTC](https://community.sparkfun.com/t/pi-ai-hat-13-tops-no-power/69683 "2026-10-12T22:44:38Z")
Just purchased my first Pi 5 and AI Hat. Pi powers on and does everything fine but there’s no life from the AI Hat. The LED on the Hat does not light up. Using a Cana 27W power supply. DOA? --- ## [ECEF results do not match expectations](https://community.sparkfun.com/t/ecef-results-do-not-match-expectations/69724)
**Author:** [@Jack3](https://community.sparkfun.com/u/Jack3)\ **Replies:** 7\ **Last updated:** [October 12, 2026, 10:08pm UTC](https://community.sparkfun.com/t/ecef-results-do-not-match-expectations/69724 "2026-10-12T22:08:09Z")
I’m setting up a permanent RTK Base Station, following the process detailed here: How to Build a DIY GNSS Reference Station - SparkFun Learn I’ve collected 24 hours of RAWX data, converted it to a .obs file, and sent it… --- ## [MicroMod Asset Tracker Carrier Board with Teensy](https://community.sparkfun.com/t/micromod-asset-tracker-carrier-board-with-teensy/69713)
**Author:** [@dundakitty](https://community.sparkfun.com/u/dundakitty)\ **Replies:** 1\ **Last updated:** [October 12, 2026, 7:11pm UTC](https://community.sparkfun.com/t/micromod-asset-tracker-carrier-board-with-teensy/69713 "2026-10-12T19:11:26Z")
The MicroMod Asset Tracker Carrier Board Hookup guide includes instructions for several MicroMod processors but does not include the Teensy. Does anyone have recommendations for its jumper settings for a Teensy processo… --- ## [Purring motor](https://community.sparkfun.com/t/purring-motor/69716)
**Author:** [@jiasenghe](https://community.sparkfun.com/u/jiasenghe)\ **Replies:** 1\ **Last updated:** [October 12, 2026, 6:24pm UTC](https://community.sparkfun.com/t/purring-motor/69716 "2026-10-12T18:24:40Z")
I’m looking for a vibration motor that sounds similar to a cat purring. --- ## [Tsunami - track sometimes "hangs" when it's told to fade out and stop](https://community.sparkfun.com/t/tsunami-track-sometimes-hangs-when-its-told-to-fade-out-and-stop/67617)
**Author:** [@micropuller](https://community.sparkfun.com/u/micropuller)\ **Replies:** 31\ **Last updated:** [October 12, 2026, 1:00pm UTC](https://community.sparkfun.com/t/tsunami-track-sometimes-hangs-when-its-told-to-fade-out-and-stop/67617 "2026-10-12T13:00:30Z")
I’m building a game using an arduino mega and a Tsunami Super WAV Trigger (Qwiic). This is the idea: The sd card contains 9 tracks in 3 categories (the tracks are all in the cards root directory), labeled 001.wav - 00… --- ## [RTK Facet v4.4 — OLED display not working after drop, but receiver still operates](https://community.sparkfun.com/t/rtk-facet-v4-4-oled-display-not-working-after-drop-but-receiver-still-operates/69689)
**Author:** [@kflora](https://community.sparkfun.com/u/kflora)\ **Replies:** 4\ **Last updated:** [October 11, 2026, 1:23am UTC](https://community.sparkfun.com/t/rtk-facet-v4-4-oled-display-not-working-after-drop-but-receiver-still-operates/69689 "2026-10-11T01:23:05Z")
My SparkFun RTK Facet (ZED-F9P, firmware v4.4) recently fell approximately 4 feet onto dirt. It had previously been working normally. Symptoms: Initially, the unit would power on briefly, display “Shutting Down,” and… --- ## [Tracking distance with a PS/2 optical mouse sensor and Arduino](https://community.sparkfun.com/t/tracking-distance-with-a-ps-2-optical-mouse-sensor-and-arduino/69699)
**Author:** [@herry\_potter](https://community.sparkfun.com/u/herry_potter)\ **Replies:** 2\ **Last updated:** [October 10, 2026, 6:52pm UTC](https://community.sparkfun.com/t/tracking-distance-with-a-ps-2-optical-mouse-sensor-and-arduino/69699 "2026-10-10T18:52:43Z")
I put together a small Arduino sketch that reads movement from a PS/2 optical mouse and converts it to distance. It reports net X/Y displacement and total path length in cm. How it works: Reads the dx/dy counts from t… --- ## [MAX30101 - Heart Beat Detection with Green LED](https://community.sparkfun.com/t/max30101-heart-beat-detection-with-green-led/40840)
**Author:** [@parke\_usc.edu](https://community.sparkfun.com/u/parke_usc.edu)\ **Replies:** 3\ **Last updated:** [October 10, 2026, 3:02am UTC](https://community.sparkfun.com/t/max30101-heart-beat-detection-with-green-led/40840 "2026-10-10T03:02:16Z")
I’ve been using the MAX30105 and now MAX30101 in a classroom setting to have students build a smart watch. I’d like to use the green LED since that is more effective for use on wrists to detect heart beat. However the sp… --- ## [Help with art project](https://community.sparkfun.com/t/help-with-art-project/69693)
**Author:** [@ev-art](https://community.sparkfun.com/u/ev-art)\ **Replies:** 1\ **Last updated:** [October 10, 2026, 12:53am UTC](https://community.sparkfun.com/t/help-with-art-project/69693 "2026-10-10T00:53:07Z")
Hello sparkfun community, I came across sparkfun while researching audio options for an art project. It seems likely that sparkfun has something that will work but I am inexperienced and don’t know for sure or how. I am… --- ## [M7E Hecto + DIY terminated microstrip "line antenna" on the ground for a BMX finish line – has anyone tried this?](https://community.sparkfun.com/t/m7e-hecto-diy-terminated-microstrip-line-antenna-on-the-ground-for-a-bmx-finish-line-has-anyone-tried-this/69666)
**Author:** [@Felipe](https://community.sparkfun.com/u/Felipe)\ **Replies:** 4\ **Last updated:** [October 10, 2026, 12:38am UTC](https://community.sparkfun.com/t/m7e-hecto-diy-terminated-microstrip-line-antenna-on-the-ground-for-a-bmx-finish-line-has-anyone-tried-this/69666 "2026-10-10T00:38:40Z")
Hi everyone, I’m building a race timing system for BMX using the SparkFun M7E Hecto and passive UHF tags, running on an Orange Pi 5 Pro (Python, python-mercuryapi). Before I build anything, I’d like opinions on an anten… --- ## [Livox Mid-360 sync loss at 1Hz PPS UART and 10Hz USB message rate with ZED-F9P](https://community.sparkfun.com/t/livox-mid-360-sync-loss-at-1hz-pps-uart-and-10hz-usb-message-rate-with-zed-f9p/69688)
**Author:** [@arnavsupplies](https://community.sparkfun.com/u/arnavsupplies)\ **Replies:** 2\ **Last updated:** [October 9, 2026, 4:43pm UTC](https://community.sparkfun.com/t/livox-mid-360-sync-loss-at-1hz-pps-uart-and-10hz-usb-message-rate-with-zed-f9p/69688 "2026-10-09T16:43:35Z")
I have a Livox Mid-360 connected to a SpartFun RTK I have a Livox Mid-360 connected to a SpartFun RTK ZED-F9P board. I have the PPS wire connected with a 1Hz PPS rate. The UART 1 is configured to 9600 Baud as that is the… --- ## [Spark help](https://community.sparkfun.com/t/spark-help/69681)
**Author:** [@JD2025R](https://community.sparkfun.com/u/JD2025R)\ **Replies:** 6\ **Last updated:** [October 9, 2026, 1:45pm UTC](https://community.sparkfun.com/t/spark-help/69681 "2026-10-09T13:45:31Z")
Hello, I’m looking for a cost-effective way to measure a gap with + or - .5mm precision, I would need 4-corner measurements, ( 4-sensors) and I can mount the sensors at a minimum distance of about 5mm, with a max. distan… --- ## [RTK Postcard Portability Shield not recognized after 3.4 firmware update](https://community.sparkfun.com/t/rtk-postcard-portability-shield-not-recognized-after-3-4-firmware-update/69670)
**Author:** [@trenthem](https://community.sparkfun.com/u/trenthem)\ **Replies:** 4\ **Last updated:** [October 9, 2026, 5:34am UTC](https://community.sparkfun.com/t/rtk-postcard-portability-shield-not-recognized-after-3-4-firmware-update/69670 "2026-10-09T05:34:27Z")
I upgraded my Postcard from 3.0 to 3.4. Now the Portability Shield screen is blank and is not recognized by the Postcard according to the serial config output. I’ve done the factory reset procedure and flash erase etc… --- ## [Sparkfun mono audio amplifier](https://community.sparkfun.com/t/sparkfun-mono-audio-amplifier/69649)
**Author:** [@Rioghasarig](https://community.sparkfun.com/u/Rioghasarig)\ **Replies:** 2\ **Last updated:** [October 9, 2026, 3:23am UTC](https://community.sparkfun.com/t/sparkfun-mono-audio-amplifier/69649 "2026-10-09T03:23:38Z")
I’m attempting to use the audio amplifier circuit board I have a diagram for my attempt to set it up \[Album\] imgur.com … --- ## [Microbit Mini USB](https://community.sparkfun.com/t/microbit-mini-usb/69674)
**Author:** [@Kelly\_Maxey](https://community.sparkfun.com/u/Kelly_Maxey)\ **Replies:** 1\ **Last updated:** [October 8, 2026, 10:30pm UTC](https://community.sparkfun.com/t/microbit-mini-usb/69674 "2026-10-08T22:30:55Z")
Hello I use the microbit attached to the Kitronik Servolite board. The original micro USB that came with the microbit will still fit into the connector when attached to the board. However, the other microUSB cables tha… [Next page](https://community.sparkfun.com/latest.md?page=1)