SKU: 34214641868

Parallax SIM33EAU 3.3-5V GPS Module

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Description

Parallax SIM33EAU 3.3-5V GPS ModuleWhether your project needs positional accuracy, high speed movement estimations, high altitude measurements, fast update rates, or just plain ease of use, the SIM33EAU GPS Module has you covered. Parallaxs SIM33EAU GPS Module embeds the capable SIM33EAU GPS device in a project friendly board. Ultra compact, the SIM33EAU device has a built in low noise amplifier and patch antenna so there is no need for an extra antenna on the board. The SIM33EAU GPS

Whether your project needs positional accuracy, high-speed movement estimations, high altitude measurements, fast update rates, or just plain ease of use, the SIM33EAU GPS Module has you covered.

Parallax’s SIM33EAU GPS Module embeds the capable SIM33EAU GPS device in a project-friendly board. Ultra compact, the SIM33EAU device has a built-in low-noise amplifier and patch antenna so there is no need for an extra antenna on the board.

The SIM33EAU GPS device gives your project the ability to read its position on the earth—given a clear view of the sky—using global navigation satellite systems such as GPS, GLONASS, Galileo or QZSS. Its default settings provide all the capabilities you would expect from a GPS receiver: location fix, speed, heading, altitude measurements, and atomic date and time. Advanced users can re-configure these settings for specific needs.

Parallax’s module makes the SIM33EAU device easily accessible to students, hobbyists, and developers. An onboard voltage regulator and buffer circuitry provide signal conditioning for use with 3.3 V or 5 V microcontrollers. Power and satellite fix LEDs let you know when your GPS module is ready and receiving data. A supercapacitor preserves almanac data for more than two hours if power is disconnected. The breadboard-friendly 7-pin header and mounting holes make for quick, solder-free integration into a project.


SIM33EAU GPS Module Features:
  • Ready for use with 3.3 V or 5 V microcontrollers
  • Power and satellite fix LEDs for quick visual status
  • Supercapacitor preserves almanac data for more than 2 hours
  • Supports PMTK and NMEA 0183 standard protocols
  • Receiver supports GPS, GLONASS, GALILEO, QZSS, SBAS ranging (WAAS/EGNOS/MSAS/GAGAN), AGPS, and EASY/EPO orbit prediction
  • 33 tracking & 99 acquisition channels with jamming elimination
  • Indoor and outdoor multi-path detection and compensation
  • Supported by Propeller C Simple Libraries and BlocklyProp visual programming
  • PCB assembled, tested, and completed in Rocklin, California
Application Ideas:
  • Robot navigation
  • Fleet tracking
  • Heading and speed measurements
  • Weather balloon tracking
Note: Propeller C code for this GPS module requires Simple Libraries update 07.02.2019 or later.

SIM33EAU GPS Module Specifications:
  • Power: 3.3 V – 5 V*, 60 mA max (typically 45 mA)
  • Standby power: Typically 165 µA at 3.3 VIN, 287 µA at 5 VIN
  • Supercapacitor data preservation time for hot start: >2 hours
  • Channels: 33 tracking, 99 acquisition
  • Typical TTFF (Time to first fix): Cold 31 s, Warm 26 s, Hot < 1 s, EPO Assist 13 s
  • Protocols: NMEA and PMTK
  • Communication: TTL Asynchronous Serial UART 4800–115200 bps, 9600 default
  • Digital I/O: Enable, 3D-Fix and Timemark (1 PPS – Pulse Per Second)
  • Navigation update rate: up to 10 Hz
  • Horizontal position accuracy: 2.5 meter CEP (Circular Error Probable)
  • Speed accuracy: 0.1 meter/second
  • Operating temperature range: -40 to +185 °F (-40° to +85° C)
  • Maximum altitude: 80 km (~50 mi); upper mesosphere
  • Dimensions: 1.0 x 1.7 x 0.36 in (25.4 x 43.2 x 9.1 mm)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34214641868

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Tessy
Grantham, US
★★★★★ 1
Burned my already sensitive feet, too big
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
Feels icky, and the heat gets trapped and literally felt like my feet were being burned by these. The bottoms of these feel prickly and they are way too big. You have to sit still and cannot walk in them.
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Reviewed in the United States on April 22, 2026
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Ms. Mac
Birmingham, US
★★★★★ 5
Just as good as paraffin wax
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I might prefer these socks over paraffin wax. They are comfy and very moisturizing. I use these socks once a week to keep the heels and soles of my feet moisturized between pedicures. I rinse with warm, soapy water then hang to dry. They are hard to walk in, but there's a saying printed in the socks that's says something to the effect of "take a break, stay off your feet" lol I love that as a reminder to put my feet up and relax
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Reviewed in the United States on April 9, 2026
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SKI
Battle Creek, US
★★★★★ 5
Love these!
Color: Pink & Beige, Size: Small(fits up to size 7)
Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
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Reviewed in the United States on April 25, 2026
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Mychelle L.
Chelsea, US
★★★★★ 5
Shine, not glitter.
Color: Gold
I love this! I thought it was glitter, but its shine.
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Lake Worth, US
★★★★★ 5
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