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Channel: SparkFun Electronics Comments

QCPete on COM-23979 - SparkFun MOSFET Power Switch and Buck Regulator (Low-Side)

There is a capacitor (C4) on the VCC net of this board that is rated for 35V. Usually, it's a good rule of thumb to have capacitors double-rated for whatever your board is planning on using - to...

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Customer #1731644 on PRT-11366 - Big Red Box - Enclosure

Nice enclosure, but the dimensional drawing is a big red box of lies!

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LukeShu on DEV-19958 - W5500-EVB-Pico

Though it's not mentioned in the description of features, besides being a rPi Pico with a W5500 strapped to it, it also has 16MB external flash strapped to it (in addition to the 2MB internal flash in...

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Customer #1753423 on DEV-26586 - W55RP20-EVB-PICO

Can this board be powered by PoE? On the features tab it lists “Built-in RJ45 (POE)” but the board doesn’t appear to have the necessary transformer and other components to be PoE powered.

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Customer #1847339 on GPS-25795 - Telescopic Surveying Pole

Fit and finish of this item is excellent, smooth action, light weight and precise.

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Matty++ on SEN-15335 - SparkFun 9DoF IMU Breakout - ICM-20948 (Qwiic)

I'm looking for the Logic shifter MOSFET Datasheet. Could you provide a Manufacturer part number?

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Robomaniac on DEV-26586 - W55RP20-EVB-PICO

From my understanding it is not. It's writing "Additional modules are installed to enable POE" and if you check website they have a module call WIZPoE-P1 which you attach to the top and makes this...

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Customer #947111 on COM-11450 - LED - 5mm Cycling RGB (slow)

I appreciate this discussion and the more detailed one that was linked, but I am not an engineer and I just want to know what current limiting resistor to use with the 5mm LED. I am powering it with a...

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Customer #108258 on SEN-24904 - SparkFun Optical Tracking Odometry Sensor -...

I am an FTC mentor. I'm now with my second team, which is a rookie team. They are used to the Block programming language they used in FLL. We are planning to have them use Block this year for FTC Into...

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erff on SPX-25365 - Soft Power Switch Mk2 - JST 2mm

Are VIN and VOUT isolated from the other pins? Can a microcontroller be independently powered and just connected to the control pinsm

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erff on SPX-24475 - 8 Relay Control Board

I wish this product was just one channel for size. I need this opti isolator instead of a regular relay to avoid the annoying loud click!

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erff on BOB-09118 - SparkFun Opto-isolator Breakout

I wish there was another version that could do high current

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mungbean on COM-10442 - LED Tactile Button - Red

I bought some of these years ago and only just got round to using one. I missed it first time around, but there's a TINY + sign on one of the raised white bits to show where the anode of the LED is...

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mungbean on BOB-10467 - LED Tactile Button Breakout

I bought some of these years ago and only just got round to using one. I missed it first time around, but — assuming you're using LED Tactile Button such as COM-10442 — there's a tiny '+' sign on one...

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PaulZC on SPX-25365 - Soft Power Switch Mk2 - JST 2mm

Hi. VIN and VOUT are not isolated, but you should have no problem using this with an independent microcontroller. GND is common between the JST connectors (battery negative) and the GND breakout pad....

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Uniplast21 on KIT-23451 - SparkFun ISP Pogo Adapter v2

What exactly makes this a “V2”? It’s identical to the original. The underside of the board even says “V10” just like the original. The only difference is that this kit does NOT come with the 1x6 pin...

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blorgggg on SEN-21276 - ArduCam 64MP Autofocus Camera Module

Is this the Hawkeye version or is this the newer owl site version?

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Customer #261984 on PRT-26026 - Raspberry Pi 5 Camera Cable - 500mm

This product description seems contrdictory. It says it's a camera cable for use with a display, then says "The camera cable should not be used with a display, and vice versa." Which is it?

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Customer #1921166 on COM-16566 - SparkFun Qwiic Quad Relay

Bought through Digikey in October 2024 - The board still has the problems discussed in the reviews section and died after about 10 minutes of consistent use over two days.

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Sormaz on COM-23979 - SparkFun MOSFET Power Switch and Buck Regulator (Low-Side)

Is it just a matter of adjusting R7 and R8 to get a 5V output? any other considerations?FWIW I am just putting another 47k resistor in parallel with R8 to get the appropriate ratio.

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Customer #707384 on SEN-08679 - SoftPot Membrane Potentiometer - 200mm

How wide is the soft pot? The data sheets don't mention it's size?

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Customer #1180405 on SEN-15441 - SparkFun Lightning Detector - AS3935

I tried compact this module into a 95mm x 65mm x 25mm Transparent plastic box with 006P(9V)Battery, 3-Terminal regulator, small ESP32 CPU and OLED dispaly. However, I seems that background noises...

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Customer #463397 on KIT-21285 - SparkFun Qwiic Starter Kit for Raspberry Pi

Does this kit work with Raspberry Pi 5?

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Zach2 on PRT-14411 - SparkFun LiPo Charger/Booster - 5V/1A

Does anyone know exactly which version of the MCP73831 is being used on this board? I am using it with a 2000mA 3.7v LiPo and while it charges fine the STAT (charging) LED never goes off. I suspect...

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SparkFro on SEN-24904 - SparkFun Optical Tracking Odometry Sensor - PAA5160E1...

Hello! There is a sample OpMode available for this sensor in Blocks. Just make sure you're using SDK v10.0 or greater, and it should appear in list of sample OpModes.

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TechMaze on PRT-26784 - SparkFun Qwiic Power Switch

What is the voltage drop? What is the relationship between current and voltage drop?

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asturmaps on SPX-25365 - Soft Power Switch Mk2 - JST 2mm

Hi, how would I connect it to a PC to reprogram it? Thanks

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PaulZC on PRT-26784 - SparkFun Qwiic Power Switch

Hi. The "switch" is a DMG2305UX P-Channel MOSFET. Its on-resistance is around 52 milliOhms (0.052 Ohms). You can use Ohm's Law to calculate the drop... I hope this helps, Paul

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dlkeng on PRT-26993 - SparkFun Soft Power Switch - JST 2mm

Documents -> Schematics returns "404 - Not Found"

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Customer #478181 on PRT-26993 - SparkFun Soft Power Switch - JST 2mm

Schematic link broken; available directly on GitHub.

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Customer #478181 on SPX-25365 - Soft Power Switch Mk2 - JST 2mm

Why not I ask? The output switch has level shifting. The board would be much more useful if logic voltage were derived from VIN, i.e. regulated, and VIN could handle higher voltage as I and probably...

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bboyho on PRT-26993 - SparkFun Soft Power Switch - JST 2mm

Nice catch! In the address, a letter changed from a lower case 'v' to a upper case 'V'. Sorry about that, the link has been updated

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Customer #627366 on COM-15168 - SparkFun Qwiic Joystick

There is no board dimension file for this product like other products have. These files are very handy when creating components to insert the device into. Please add.

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peseaunt on DEV-23551 - Raspberry Pi 5 - 8GB

The power supplies for these come separate right? Which power supply is the one to get? Thanks.

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Customer #1925744 on SEN-18364 - Humidity and Temperature Sensor - DHT20

Hello, Please, Can I get the correct circuit connection for this, Not sure what I am doing wrongly.

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Pearce on DEV-23551 - Raspberry Pi 5 - 8GB

They do come separate. Check out the power supplies in the related products and frequently bought together sections. They will be compatible with the Raspberry Pi 5.

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Lutorm on SPX-20107 - Satellite Transceiver Function Board - Swarm M138

You can no longer sign up for Swarm service or buy the modem, so you should probably retire this product, too.

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meekthegeek on BOB-00717 - SparkFun SOT23 to DIP Adapter

This needs a marker for a pin #1. Once an SOT23-6 chip gets covered in solder paste, the writing wipes off, and you cannot tell which side is up/pin#1 by looking at the chip.I've taken to marking a pin...

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Customer #667626 on KIT-27252 - Raspberry Pi Compute Module 5 Development Kit

How do you order the compute module 5 development kit with a different compute module (CM5 32GB/8GB)?

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Pearce on KIT-27252 - Raspberry Pi Compute Module 5 Development Kit

This is the only development kit available at the moment. Though all parts are available separately.

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ratsnest on DEV-15423 - SparkFun Qwiic Micro - SAMD21 Development Board

Yup. TX and RX are switched on the silkscreen.

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marsfan on SEN-19040 - Luxonis Oak-D LITE

I know your comment is ~2 years old at this point, but for anyone else wanting to know, I just ordered one through SparkFun thiss past week, and it came with the BMI270 IMU. Its less feature rich...

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ratsnest on PRT-16766 - Qwiic JST Connector - SMD 4-Pin (Vertical)

I will also post a cautionary message since it seems that this hasn't been addressed in the four years since the last one. The pinout for this connector on all of the Sparkfun designs is backwards from...

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Customer #886615 on SPX-16618 - Qwiic Humidity AHT20

Had to modify the library to 'wire1' from 'wire' to use with ESP32 qwik port, else reported no AHT20 found. Maybe SF could add code to the library to check for presence of wire1?

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Customer #1272652 on DEV-26125 - Raspberry Pi 5 - 2GB

I'm writing this in response to the reviewer who was upset about needing a new "brick". The $12 black (white not available at time of writing) Raspberry Pi 27W USB-C PD (Power Delivery) Power Supply,...

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