# Projects **URL:** https://community.sparkfun.com/c/community/projects/48.md [Latest](https://community.sparkfun.com/latest.md) · [Categories](https://community.sparkfun.com/categories.md) · [Tags](https://community.sparkfun.com/tags.md) --- ## [About the Projects category](https://community.sparkfun.com/t/about-the-projects-category/59233)
**Author:** [@system](https://community.sparkfun.com/u/system)\ **Replies:** 0\ **Last updated:** [July 8, 2024, 4:06pm UTC](https://community.sparkfun.com/t/about-the-projects-category/59233 "2024-07-08T16:06:56Z")
Topics and discussions around projects, project ideas and concepts. --- ## [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… --- ## [Help! Simple MOSFET circuit not working consistently](https://community.sparkfun.com/t/help-simple-mosfet-circuit-not-working-consistently/69542)
**Author:** [@robertSparkfunCommunity](https://community.sparkfun.com/u/robertSparkfunCommunity)\ **Replies:** 3\ **Last updated:** [September 20, 2026, 10:33pm UTC](https://community.sparkfun.com/t/help-simple-mosfet-circuit-not-working-consistently/69542 "2026-09-20T22:33:07Z")
I’m building a circuit that lights a 9W 12V MR16 LED bulb using a photointerrupter (GP1A57HRJ00F) via a transistor (D3328Z) and a MOSFET (IRLZ34NPbF). The problem I’m having is that it all works fine for about 15 seco… --- ## [Multisensor architecture for marine surface drone - seeking guidance (open to email follow-up)](https://community.sparkfun.com/t/multisensor-architecture-for-marine-surface-drone-seeking-guidance-open-to-email-follow-up/69286)
**Author:** [@Giorgio99](https://community.sparkfun.com/u/Giorgio99)\ **Replies:** 12\ **Last updated:** [July 30, 2026, 3:25pm UTC](https://community.sparkfun.com/t/multisensor-architecture-for-marine-surface-drone-seeking-guidance-open-to-email-follow-up/69286 "2026-07-30T15:25:54Z")
Hello, We’re a university team developing a surface drone for marine applications, currently in the sensor selection phase for a complete onboard sensory architecture. We’re looking at your GNSS receivers, IMUs, and rel… --- ## [Custom Teensy Micro mod schematic review request](https://community.sparkfun.com/t/custom-teensy-micro-mod-schematic-review-request/68839)
**Author:** [@Rocketmanandrew](https://community.sparkfun.com/u/Rocketmanandrew)\ **Replies:** 0\ **Last updated:** [May 25, 2026, 8:12pm UTC](https://community.sparkfun.com/t/custom-teensy-micro-mod-schematic-review-request/68839 "2026-05-25T20:12:53Z")
I have been working on a custom project where i am using a Teensy 4.1 design, so i used the Micro mod schematic, however i am not quite sure if i have done it correctly and was hoping someone could check over… --- ## [Any suggestions for a MAX9924 breakout or module?](https://community.sparkfun.com/t/any-suggestions-for-a-max9924-breakout-or-module/68826)
**Author:** [@bnemec](https://community.sparkfun.com/u/bnemec)\ **Replies:** 2\ **Last updated:** [May 22, 2026, 7:47pm UTC](https://community.sparkfun.com/t/any-suggestions-for-a-max9924-breakout-or-module/68826 "2026-05-22T19:47:28Z")
Hello, I have a project where I’m trying to read rpms (~5000 to 150,000) with a Variable Reluctance pickup. It’s an automotive turbo so pretty much stuck with the OEM sensor type. Based on what others are doing I’m loo… --- ## [Meet bUniProbe: An Open-Source Browser-Based HW Debugger](https://community.sparkfun.com/t/meet-buniprobe-an-open-source-browser-based-hw-debugger/68531)
**Author:** [@bitmerse](https://community.sparkfun.com/u/bitmerse)\ **Replies:** 1\ **Last updated:** [April 13, 2026, 3:59pm UTC](https://community.sparkfun.com/t/meet-buniprobe-an-open-source-browser-based-hw-debugger/68531 "2026-04-13T15:59:52Z")
Hi everyone, I’m excited to share a new open-source project we’ve been working on that we think will be a great addition to your lab benches: bUniProbe. During hardware bring-up and firmware development, it is commo… --- ## [New Project Where Do I Start](https://community.sparkfun.com/t/new-project-where-do-i-start/68442)
**Author:** [@ekraus50](https://community.sparkfun.com/u/ekraus50)\ **Replies:** 20\ **Last updated:** [April 9, 2026, 5:46pm UTC](https://community.sparkfun.com/t/new-project-where-do-i-start/68442 "2026-04-09T17:46:33Z")
I have 2 different scenarios. Both involve sensing a .175 in brass object falling through either a clear or black tube with an ID of .375 or a square molded black sleeve .5” x .5” So far I have tried IR Obstacle Avoi… --- ## [Raspberry Pi 5 control of a hybrid stepper motor](https://community.sparkfun.com/t/raspberry-pi-5-control-of-a-hybrid-stepper-motor/68426)
**Author:** [@Scott\_Riddle](https://community.sparkfun.com/u/Scott_Riddle)\ **Replies:** 1\ **Last updated:** [March 27, 2026, 7:40am UTC](https://community.sparkfun.com/t/raspberry-pi-5-control-of-a-hybrid-stepper-motor/68426 "2026-03-27T07:40:51Z")
I have a Raspberry Pi 5 and I am trying to control a hybrid stepper motor that has the driver built into it. I am looking for a simple board to connect to the GPIO pins of the Pi to send enable, step and direction signal… --- ## [Need more information conductive fabrics](https://community.sparkfun.com/t/need-more-information-conductive-fabrics/68321)
**Author:** [@RK\_44](https://community.sparkfun.com/u/RK_44)\ **Replies:** 8\ **Last updated:** [March 17, 2026, 7:16am UTC](https://community.sparkfun.com/t/need-more-information-conductive-fabrics/68321 "2026-03-17T07:16:10Z")
Hello everyone, I’m working on a project that uses conductive fabrics to detect hand touch, light finger touch, grip, and hovering on a circular rim. The conductive fabric will be wrapped around an aluminum rim, and the… --- ## [Inquiry about (vacuum) pump components](https://community.sparkfun.com/t/inquiry-about-vacuum-pump-components/68150)
**Author:** [@ocporben](https://community.sparkfun.com/u/ocporben)\ **Replies:** 1\ **Last updated:** [February 25, 2026, 3:30pm UTC](https://community.sparkfun.com/t/inquiry-about-vacuum-pump-components/68150 "2026-02-25T15:30:51Z")
Hello, I am looking for inquiring about a pump for our design (12V, 0-30 psi, \>5L/min flow rate); however, it doesn’t quite fit our requirements. Pump link: (https://www.sparkfun.com/vacuum-pump-12v.html#content-review… --- ## [How to monitor the health of a relay and it's contacts](https://community.sparkfun.com/t/how-to-monitor-the-health-of-a-relay-and-its-contacts/67610)
**Author:** [@WOGoos](https://community.sparkfun.com/u/WOGoos)\ **Replies:** 3\ **Last updated:** [January 25, 2026, 4:40am UTC](https://community.sparkfun.com/t/how-to-monitor-the-health-of-a-relay-and-its-contacts/67610 "2026-01-25T04:40:25Z")
Hi, I have a challenge and hope someone has and idea how to solve it. I want to monitor the health of a relay by monitoring the state of relay contacts in relation with the state of the coil. I want to see if the contac… --- ## [Lancashire Aerospace society NRC Team - Powered by RS support!](https://community.sparkfun.com/t/lancashire-aerospace-society-nrc-team-powered-by-rs-support/67310)
**Author:** [@Lancashire\_Aerosoc](https://community.sparkfun.com/u/Lancashire_Aerosoc)\ **Replies:** 0\ **Last updated:** [November 7, 2025, 10:46pm UTC](https://community.sparkfun.com/t/lancashire-aerospace-society-nrc-team-powered-by-rs-support/67310 "2025-11-07T22:46:44Z")
Hi all, We are the University of Lancashire Aerospace Society, and this year we are competing in the UKSEDS National Rocketry Championship-a student-led competition whereby teams across the UK design, build, and launch … --- ## [SparkFun gator:log - micro:bit Accessory Board](https://community.sparkfun.com/t/sparkfun-gator-log-micro-bit-accessory-board/66819)
**Author:** [@Matthew\_Smith](https://community.sparkfun.com/u/Matthew_Smith)\ **Replies:** 2\ **Last updated:** [September 8, 2025, 2:35pm UTC](https://community.sparkfun.com/t/sparkfun-gator-log-micro-bit-accessory-board/66819 "2025-09-08T14:35:05Z")
I want my middle school students to be able to track air pressure with our Microbits. I think I need this accessory: SparkFun gator:log - micro:bit Accessory Board Has anyone done this? I know I will need alligator clip… --- ## [MH-RD Raindrop Sensor Not Detecting Light Rain?](https://community.sparkfun.com/t/mh-rd-raindrop-sensor-not-detecting-light-rain/66775)
**Author:** [@kasuo](https://community.sparkfun.com/u/kasuo)\ **Replies:** 2\ **Last updated:** [September 6, 2025, 2:50am UTC](https://community.sparkfun.com/t/mh-rd-raindrop-sensor-not-detecting-light-rain/66775 "2025-09-06T02:50:46Z")
Has anyone here tried the MH-RD raindrop sensor module? I hooked one up to my Arduino but it doesn’t seem to pick up light rain, only when it’s pouring. Wondering if I’m wiring it wrong or just need to tweak the sensitiv… --- ## [HELP IDENTIFY THIS RED 28 PIN MODULE](https://community.sparkfun.com/t/help-identify-this-red-28-pin-module/66495)
**Author:** [@tnysoliz](https://community.sparkfun.com/u/tnysoliz)\ **Replies:** 3\ **Last updated:** [August 13, 2025, 8:00am UTC](https://community.sparkfun.com/t/help-identify-this-red-28-pin-module/66495 "2025-08-13T08:00:52Z")
Can anyone help me identify these older 28 pin modules i believe are SPARKFUN Respond here or my email please email is tnysoliz@yahoo.com --- ## [Air Sensors Unit](https://community.sparkfun.com/t/air-sensors-unit/66168)
**Author:** [@washley](https://community.sparkfun.com/u/washley)\ **Replies:** 3\ **Last updated:** [July 24, 2025, 7:43pm UTC](https://community.sparkfun.com/t/air-sensors-unit/66168 "2025-07-24T19:43:43Z")
I have an AirGradient unit for monitoring the air quality in my home, but wanted something that would hang off a wall outlet. I discovered the SparkFun qwiic boards and went a bit overboard buying the most accurate tempe… --- ## [Bad Apple! Playing on MicroMod Input and Display Carrier](https://community.sparkfun.com/t/bad-apple-playing-on-micromod-input-and-display-carrier/65990)
**Author:** [@Michael\_Lloyd](https://community.sparkfun.com/u/Michael_Lloyd)\ **Replies:** 1\ **Last updated:** [July 14, 2025, 3:50pm UTC](https://community.sparkfun.com/t/bad-apple-playing-on-micromod-input-and-display-carrier/65990 "2025-07-14T15:50:55Z")
I thought I would show off playing “Bad Apple!!” on a MicroMod display board. Video: https://youtube.com/shorts/9pGKf29HdKk?si=VmT7nDasjQE\_1oZm The video plays at ~30 FPS, but the maximum I’ve managed to get it to play… --- ## [sports timer improvement project](https://community.sparkfun.com/t/sports-timer-improvement-project/65796)
**Author:** [@gegedme](https://community.sparkfun.com/u/gegedme)\ **Replies:** 7\ **Last updated:** [July 7, 2025, 7:59pm UTC](https://community.sparkfun.com/t/sports-timer-improvement-project/65796 "2025-07-07T19:59:37Z")
Hello, :blush: I belong to a Kendo club in France. We bought a timer to pace our sessions. Unfortunately, the sound of the round start and end beeps is too quiet for everyone to hear. I’d like to improve this withou… --- ## [Sourcing 20µF 200VAC non-polarized capacitor](https://community.sparkfun.com/t/sourcing-20-f-200vac-non-polarized-capacitor/65669)
**Author:** [@inductor\_guy](https://community.sparkfun.com/u/inductor_guy)\ **Replies:** 4\ **Last updated:** [June 23, 2025, 8:42pm UTC](https://community.sparkfun.com/t/sourcing-20-f-200vac-non-polarized-capacitor/65669 "2025-06-23T20:42:38Z")
I’m currently trying to fix an old vacuum tube record player from the 1950’s that isn’t working because the capacitors have all dried up and lost their capacitance. There are four capacitors total, and all the other comp… --- ## [Need help with OpenWRT router](https://community.sparkfun.com/t/need-help-with-openwrt-router/65154)
**Author:** [@MakerMan](https://community.sparkfun.com/u/MakerMan)\ **Replies:** 7\ **Last updated:** [May 31, 2025, 4:23am UTC](https://community.sparkfun.com/t/need-help-with-openwrt-router/65154 "2025-05-31T04:23:38Z")
I love electronics and DIY project but I’m new and beginner in experimenting with it, So I’m sorry if I’m asking something stupid. I have old routers and I heard about OpenWRT and dd-wrt and customizing the router firmw… --- ## [Polyurethane as a conformal coating.](https://community.sparkfun.com/t/polyurethane-as-a-conformal-coating/34641)
**Author:** [@52midnight](https://community.sparkfun.com/u/52midnight)\ **Replies:** 6\ **Last updated:** [May 15, 2025, 1:09pm UTC](https://community.sparkfun.com/t/polyurethane-as-a-conformal-coating/34641 "2025-05-15T13:09:27Z")
My first negative ion generator has been in operation for two years and has been a success. I’m now putting together a second using physically smaller capacitors and have decided to paint the cap-diode ladder with a conf… --- ## [HMC6352 2D magnetometer revisited](https://community.sparkfun.com/t/hmc6352-2d-magnetometer-revisited/27313)
**Author:** [@jremington](https://community.sparkfun.com/u/jremington)\ **Replies:** 6\ **Last updated:** [April 29, 2025, 5:20am UTC](https://community.sparkfun.com/t/hmc6352-2d-magnetometer-revisited/27313 "2025-04-29T05:20:18Z")
While most of use have moved on to 3D accelerometer/magnetometer compasses or even IMUs for our robots, there are still interesting uses for the HMC6352 2D magnetometer. I wanted to make a high resolution frictionless sh… --- ## [BNO086 IMU ESP32 Thingplus C Project](https://community.sparkfun.com/t/bno086-imu-esp32-thingplus-c-project/62305)
**Author:** [@Chris\_Shipman](https://community.sparkfun.com/u/Chris_Shipman)\ **Replies:** 3\ **Last updated:** [April 17, 2025, 8:34am UTC](https://community.sparkfun.com/t/bno086-imu-esp32-thingplus-c-project/62305 "2025-04-17T08:34:56Z")
I’m working a project to better learn IMUs and PID control theory. So far I have the (Sparkfun) BNO086 IMU interfaced to the (Sparkfun) ESP32 Thingplus C microcontroller (uC). The IMU is centered on a test fixture with 2… --- ## [WAV Trigger in phone case project?](https://community.sparkfun.com/t/wav-trigger-in-phone-case-project/64502)
**Author:** [@Tennis\_2025](https://community.sparkfun.com/u/Tennis_2025)\ **Replies:** 5\ **Last updated:** [April 10, 2025, 4:01pm UTC](https://community.sparkfun.com/t/wav-trigger-in-phone-case-project/64502 "2025-04-10T16:01:47Z")
Hopefully I’m in the right section of the forum. I’m basically looking to make a phone case with 2-4 buttons on it that, when pressed, produce a sound. I’m just seeing if that’s a possible thing to make it slim enough w… --- ## [RTK solution Without Internet](https://community.sparkfun.com/t/rtk-solution-without-internet/46372)
**Author:** [@Slygo](https://community.sparkfun.com/u/Slygo)\ **Replies:** 5\ **Last updated:** [March 22, 2025, 1:42am UTC](https://community.sparkfun.com/t/rtk-solution-without-internet/46372 "2025-03-22T01:42:17Z")
Hello All, System Nomenclature: Self-Survey System Requirements: Accuracy 2 cm LAT/LOT, 3 cm height, no real-time internet connection. I have looked/read through a lot of different blogs related to RTK connections and… --- ## [Help with Large 7 Segment Displays and 12v DC motor](https://community.sparkfun.com/t/help-with-large-7-segment-displays-and-12v-dc-motor/63663)
**Author:** [@JoWardBarnacles](https://community.sparkfun.com/u/JoWardBarnacles)\ **Replies:** 7\ **Last updated:** [February 28, 2025, 2:14am UTC](https://community.sparkfun.com/t/help-with-large-7-segment-displays-and-12v-dc-motor/63663 "2025-02-28T02:14:57Z")
I am using 4 of the spark fun 7 segment displays in series with one another using a single 12v car battery for the 12v power source. The Arduino I’m using is being powered by a 9v battery, but the LED panels/Drivers need… --- ## [Load cell project - help wanted](https://community.sparkfun.com/t/load-cell-project-help-wanted/63563)
**Author:** [@Akto](https://community.sparkfun.com/u/Akto)\ **Replies:** 4\ **Last updated:** [February 21, 2025, 11:10pm UTC](https://community.sparkfun.com/t/load-cell-project-help-wanted/63563 "2025-02-21T23:10:54Z")
Hi all, Jack (of all trades) here. I’m a long-range shooter, a mechanic and a hobby electrician. In long-range shooting it’s all about getting consistent loads, which some of us develop ourselves. We prepare the brass, i… --- ## [Calculating phase currents practical approach](https://community.sparkfun.com/t/calculating-phase-currents-practical-approach/62480)
**Author:** [@Opalotype](https://community.sparkfun.com/u/Opalotype)\ **Replies:** 5\ **Last updated:** [January 6, 2025, 9:03pm UTC](https://community.sparkfun.com/t/calculating-phase-currents-practical-approach/62480 "2025-01-06T21:03:39Z")
I have a three phase circuit for my workshop which consists of - One three phase motor in delta configuration which is of 0.75 kW (power factor -0.9) One three phase transformer (500 MVA converting 415 V to 24 V) Two 6… --- ## [Bosch BME688 Development Kit](https://community.sparkfun.com/t/bosch-bme688-development-kit/44539)
**Author:** [@gatorgann](https://community.sparkfun.com/u/gatorgann)\ **Replies:** 2\ **Last updated:** [December 13, 2024, 1:50am UTC](https://community.sparkfun.com/t/bosch-bme688-development-kit/44539 "2024-12-13T01:50:18Z")
I am new to Arduino and I am trying to use the Bosch BME688 Development Kit with an Arduino Mega unit and I am not much information on how to connect it to the Mega of any code. I want to be able to read the data from th… [Next page](https://community.sparkfun.com/c/community/projects/48.md?page=1)