MAX31889EVSYS# Temperature Sensor Eval Board

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About

The MAX31889 evaluation system (EV system) provides a single platform to evaluate the MAX31889, a temperature sensor with ±0.3°C accuracy. The EV system consists of two boards connected through headers, a MAX32630FTHR microcontroller board, and the MAX31889 EV kit board. The MAX32630FTHR contains the firmware necessary to use the PC GUI program and also provides power to the MAX31889 EV kit board. The MAX31889 EV kit board ships with jumpers preinstalled to allow quick evaluation of the MAX31889.

 

The MAX31889 operates from a 1.7V to 3.6V supply voltage, and is a low-power, high-accuracy digital temperature sensor with ±0.25ºC accuracy from -20ºC to +105ºC and ± 0.65ºC accuracy from -40ºC to +125ºC. The MAX31889 has 16-bit resolution (0.005ºC). The device uses a standard I2C serial interface to communicate with a host controller. Two GPIO pins are available. GPIO1 can be configured to trigger a temperature converison, while GPIO0 can be configured to generate an interrupt for selectable status bits. The MAX31889 includes a 32-word FIFO for the temperature data and also includes high and low threshold digital temperature alarms. The device is available in a 2mm x 2mm x 0.8mm, 6-pin, μDFN package.

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Applications/Uses

  • Internet of Things (IoT) Sensors
  • Precision Temperature Monitoring
  • RTD Replacement

 

Additional Information

Important Dates

Enrollment Begin:July 23 2020

Enrollment Ends: August 17 2020

RoadTesters Selected: August 27 2020

Product Shipped: August 28 2020

RoadTesting Begins: Sept 4 2020

Reminder/Update Email: Oct 4 2020

Submit Reviews By: Nov 4 2020

*The element14 RoadTest Staff will send this reminder/update email.

**If a RoadTester is unable to meet the deadline, please notify the RoadTest Program Lead, , as soon as possible before the deadline.

RoadTesters

Terms and Conditions

RoadTest: Terms and Conditions

MAX31889EVSYS# Temperature Sensor Eval Board

 

These are the terms and conditions which govern the MAX31889EVSYS# Temperature Sensor Eval Board KIT contest. This Contest requires participants to submit an application indicating their previous experience with this type of equipment/component, information on what they would do to test the equipment/component, and the applicant’s desire to post a thorough review of their experience with images, photos, or other supplemental materials. Participants will be required to meet the Conditions for Participation.  The winners of this RoadTest will receive the item(s) listed below. RoadTest Reviews are due no later than 60 days after the receipt of the item(s). No other prizes are offered.

The Principal terms of the Competition:

The following words and phrases are used in these terms and conditions and have the meanings given to them below.

(RoadTest or Contest)

Key dates:

Applications Close: midnight (GMT) on Aug 17 2020

Announcement of Winner (estimated): Aug 18 2020

Prize: MAX31889EVSYS# Temperature Sensor Eval Board

Additional Prizes: none

Competition Site: https://www.element14.com/community/groups/roadtest?ICID=menubar_resources_roadtest

Site or element14 Community: www.element14.com/community

Judges: members of the element14 community team chosen at the Organiser’s discretion.

Judging Criteria, All of the following which will have equal weighting:

· Demonstrated competence with the technologies including links or descriptions of past projects

· Qualifications as indicated by current job role and/or schooling/vocational training;

· A thorough description of how the prize would be tested;

· Likelihood that the Applicant will blog about the prize and provide a review on element14.com;

· Originality;

· Innovation.

Organiser: Premier Farnell plc (registered in England and Wales under company number 876412) whose registered office is at Farnell House, Forge Lane, Leeds, UK

Conditions for Qualification: in addition to meeting the requirements of these terms, all persons applying to take part in the Contest (each one an Applicant) must:

· Provide a RoadTest application describing what he/she would do if awarded the Prize including similar previous projects, product experience and qualifications

Terms: these terms and conditions which govern the Competition and to which the Organiser reserves the right to make changes from time to time and the latest version of these Terms from time to time will be posted to the Site.

  1. Eligibility
  2. Applications:
  3. Selecting Winners:
  4. Liability:
  5. General:

1.1 Save as set out in these Terms, the Contest is open to any natural or legal person, firm or company or group of natural persons or unincorporated body.

1.2 All Applicants must be aged at least 18 at the time of their application.

1.3 Applicants must not enter the RoadTest if doing so or taking part may:

1.3.1 cause the Organiser and/or themselves to be in breach of any agreement (including but not limited to any contract of employment) to which they are a party or in breach of any law, regulation or rule having the force of law to which the Organiser or the Applicant may be subject or any policy of the Organiser or the Sponsor;

1.3.2 Require the Organiser to obtain any licence, authorisation or permission to deal with the Applicant; or

1.3.3 Be in breach of any policy or practice of their employer. Some employers prohibit or restrict their employees from taking part in competitions such as these or receiving prizes under them and the Organiser respects those policies and practices.

The Organiser reserves the right to disqualify any Application made in breach of these Terms and to reject any Application which it reasonably believes may be or become in breach. The Organiser reserves the right to require evidence in such form as the Organiser may reasonably require of any Applicant’s compliance with any of these Terms and to disqualify any Applicant or Participant who cannot provide such evidence reasonably promptly.

1.4 Multiple applications are not permitted.

1.5 Applications may not be submitted by an agent whether acting on behalf of an undisclosed principal or otherwise.

1.6 The Contest is NOT open to:

1.6.1 Any person or entity who is a resident or national of any country which is subject to sanctions, embargoes or national trade restrictions of the United States of America, the European Union or the United Kingdom;

1.6.2 Any employee, director, member, shareholder (as appropriate) or any of their direct families (parents, siblings, spouse, partner, children) (“Direct Families”) of the Organiser and Sponsors; or

2.1 Each Applicant must fully complete and submit a RoadTest Application by the Application Close.

2.2 By submitting a Registration Form, each Applicant:

2.2.1 Authorises the Organiser to use his or her personal data (as defined in the Data Protection Act 1998) for the purposes of running and promoting the RoadTest;

2.2.2 Authorises the Organizer to copy, reproduce and publish their application should they be accepted as a Participant;

2.2.3 Will be deemed to have read, accepted and agree to be bound by these Terms. Applicants are advised to print and keep safe these Terms;

2.2.4 Authorises the Organiser to copy, reproduce and use the Application and/or Review for the purposes of the RoadTest and as otherwise contemplated by these Terms. The Organiser will not be responsible for any inaccuracy, error or omission contained in any reproduction or use of the Project Blogs.

2.2.5 Licenses the Organiser to use the intellectual property in the Project (IP) for the purposes of this Contest. As between the Applicant and the Organiser the IP remains owned by the Applicant.

2.2.6 Grants the Organiser the right to use his or her likeness, photographs, logos, trademarks, audio or video recordings without restriction for the purposes of Contest or the promotion of it or the Site;

2.2.7 Agrees to participate positively in all publicity surrounding the Contest;

2.2.8 Agrees to be responsible for all expenses and costs incurred by him or her in preparing for, entering and participating in the Contest (save for any expenses expressly agreed by the Organiser to be borne by it in these Terms);

2.2.9 Confirms that he or she owns all IP used in his or her application or Project or Blogs and indemnifies the Organiser from any claim by a third party that use of any material provided by an Applicant to the Organiser infringes the intellectual property rights of any third party;

2.2.10 Agrees not to act in any way or fail to act in any way or be associated with any cause or group which would have a negative impact on the reputation of the Organiser and/or the RoadTest.

2.3 All applications submitted to this RoadTest must meet the following criteria:

2.3.1 Applicants must be the author, creator and owner of the proposed review idea. Applicants must not submit someone else’s idea;

2.3.2 The proposed application must be reasonably achievable by the within the time constraints of the Contest;

2.3.3 Applications must not include or propose any of the following, the inclusion of which shall render any proposed application ineligible:

(a) Applications which relate to socially taboo topics, such as illicit drug use or sexual gratification;

(b) Applications that are or could reasonably be considered to be illegal, immoral, discriminatory or offensive as determined by the Organiser;

(c) Applications in relation to them which if accepted would infringe or breach any of the policies or terms of access or use of the Site.

2.4 No Application may contain any of the hazardous substances identified by Article 4 of Directive 2002/95/EC of the European Parliament on the Restrictions on the Use of Substances in Electronic and Electrical Equipment ("the Directive") or the use of such hazardous substances in the in any such Project must not exceed the maximum concentration values set out in the Directive.

3.1 Winners will be selected by the Organiser on the basis of the quality of his or her application and its adherence to these Terms.

3.2 The total number of Winners selected will be at least the minimum number set out above but the actual number is at the sole discretion of the Organizer and/or the Sponsor, if applicable.

3.3 The Organiser will use all reasonable efforts to announce the Winners via an update to the RoadTest page by the date listed above.

3.4 Winners agree to take part in all publicity which the Organiser or the Sponsor wishes to use to promote the RoadTest, the Products featured or other Contests with which the Organiser may be connected from time to time.

3.5 Details of the Winners may also be published in the media.

3.6 Winners are responsible for all applicable taxes, duties or other charges payable in relation to any prize.

3.7

4.1 The Organiser hereby excludes all and any Liability arising out of the Contest or the acceptance, use, quality, condition, suitability or performance of any Prize, even where that Liability may arise from the Organiser’s negligence.

4.2 Nothing in these Terms will affect any Liability of the Organiser for death or personal injury arising from its negligence, for breach of Part II of the Consumer Protection Act 1987 (in the event that any entrant is entitled to claim rights under the Consumer Protection Act 1987) or for any matter in relation to which it would be illegal for the Organiser to exclude or to attempt to exclude its Liability.

4.3 Subject to 4.2, neither the Organiser, any parent company nor any subsidiary of the Organiser or such parent company or any of their directors, officers and employees (together referred to in these terms and the ‘Associates’) makes any guarantee, warranty or representation of any kind, express or implied, with respect to this Competition or the Prizes potentially available under it. Neither the Organiser nor any of its Associates shall be responsible for any Liability that may arise out of or in connection with person’s participation in this Competition, the claiming, redemption or value of any prizes under it, the use or enjoyment of such prizes or any events or circumstances arising out of or in connection with any of them. Any implied warranties of condition, merchantability or suitability or fitness for purpose of any of them are hereby expressly excluded. Wherever used in these Terms, ‘Liability’ shall mean any and all costs, expenses, claims, damages, actions, proceedings, demands, losses and other liabilities (including legal fees and costs on a full indemnity basis) arising directly or indirectly out of or in connection with the matter concerned.

5.1 The RoadTest is organised and sponsored by the Organiser. The Organiser reserves the right to delegate all or any of its powers, rights and obligations arising in relation to the RoadTest to any Associate and certain such rights and powers are assumed by the Organiser on behalf of itself and each Associate. Reference to “Organiser” shall be deemed to include reference to each Associate.

5.2 The RoadTest may be terminated at any time if there are, in the sole opinion of the Organiser, an insufficient number of entries, or if the Applications are not of an appropriate standard for a competition of this nature. The Organiser has the right to cancel or suspend the RoadTest at any time due to circumstances outside its reasonable control.

5.3 The Organiser shall have the sole discretion to disqualify (without correspondence or right of appeal) any Applicant it considers to be adversely affecting the process or the operation of the RoadTest or to be in breach of these Terms or to be acting in a disruptive manner or with intent to annoy, abuse, threaten or harass any other Applicant or Participant.

5.4 The Organiser has the right to amend or add to these Terms from time to time. Revised Terms and Conditions will be posted on the Contest Site and it is a condition of entry to the RoadTest that Applicants agree to comply with these Terms and, if appropriate, such Terms as amended from time to time.

5.5 Headings are for convenience only and do not affect the interpretation or construction of these Terms and Conditions.

5.6 These Terms and the operation of the Contest shall be governed by and construed in accordance with English Law and any claim or matter arising under these Terms shall be subject to the exclusive jurisdiction of the English courts.

RoadTest Reviews
Comment List
Anonymous
Parents
  • I'm working on this from a Windows7 laptop, installed drivers, 2 failed, mbed serial and something else.

     

    The application isn't picking anything up.

     

    Could someone please offer some help?

     

    Thanks!

  • You're going to have to provide more information - for example,

    • which microcontroller board are you trying to use with the evaluation kit,
    • what development environment are you setting up to use with the board,
    • what application are you referring to about not picking anything up,
    • what have you tried to resolve the issue (e.g. changed cables, tried different port, tried different computer)?

     

    - Gough

  • Well... I guess that was stupid thinking on my part.

     

    I guess I'll not do everything on the mbed page in the future, I guess.

     

    I opened a case with Maxim Support, hopefully I can convince them to send me a copy of the demo code.

     

    Also, I'm curious. This EV kit is just a PCB, a 2 dollar chip, a cap, and some jumpers, test probes, and headers. And terminal blocks. I don't understand why this is at the 56 dollar price mark. Seems overly expensive for a simple breakout board and software.

  • Or I'll call them in the afternoon if they aren't busy.

     

    lesson learned for road testing: if they don't come with 600 page user manuals like that Eaton thing don't' apply unless if you're willing to run in circles and call support 10 times.

  • It's common for many evaluation boards to hit the $100-150 mark even, although the parts on the board may cost only a few dollars. I'm looking at one right now on a RoadTest.

     

    This is mainly because the products themselves are not mass market - they are often done as small batches (or even hand built in some cases) which increases cost. The product often comes with extra documentation, design recommendations, actual design gerbers, bill of materials for you to "short-cut" the design processes by basing your design off their (usually optimised) reference design. Other times, they provide source code as well which can be a reference point for developing your own.

     

    Overall, the value of the kits is not the sum of the parts, but in the time saved for an engineer who is deciding whether to integrate the part or not into their design and the reduction in effort required to do. Sometimes these kits are subsidised by the manufacturer to encourage adoption of their parts, but this seems to be rather rare nowadays as is getting free samples of chips as well.

     

    - Gough

  • Actually getting samples of chips are pretty easy, I've managed to get some I needed from Maxim, Analog, and Microchip.

     

    I guess it's true EV kits are produced in low quantities, but this EV kit only has one doc: the data sheet.

     

    I'm probably going to comb through that as well.

     

    And the data sheet is for the chip.

     

    You were correct.

     

    The MAX32630FTHR contains the firmware necessary to use the PC GUI program and also provides power to the MAX31889 EV kit board. The MAX31889 EV kit board ships with jumpers preinstalled to allow quick evaluation of the MAX31889.

     

    *sighs*

     

    I'll try to find this firmware I guess.

  • I suppose product support, quality of materials/documentation is a part of the RoadTest too. But having to discover things on your own and reaching out to support in case of issues is a very normal thing regardless of the "thickness of the manual". One of my RoadTest items has cost me several hundred dollars in return postage as it is undergoing repairs to fix an issue which was discovered during the RoadTest - so keep in mind that sometimes things don't go to plan and that's only natural.

     

    In fact - I'm looking at the page for the MAX31889EVSYS right now - right on the front page it says the following:

    The MAX32630FTHR contains the firmware necessary to use the PC GUI program and also provides power to the MAX31889 EV kit board.

    There are gerbers available, as well as the application itself. The datasheet linked in the RoadTest is for the chip and not the Evaluation Kit, the actual datasheet for the evaluation board is here: https://datasheets.maximintegrated.com/en/ds/MAX31889EVSYS.pdf

     

    Looking at the download of the MAX31889 Evaluation Kit Tool zip file, it seems that the file FTHR_Interrupt.MAX32630FTHR.bin is a firmware file for reprogramming the microcontroller and is included. As for what tool you might use to download this to the board, I'm not sure - if it's Mbed, then it might appear in your computer as a removable disk drive. Copying the BIN file into the removable disk drive and then safely removing it should cause it to be programmed onto the board (based on my experience with a Freescale Freedom board I previously tried).

     

    - Gough

     

    EDIT: Almost midnight here in Sydney, so I might have to leave it there. Hopefully you manage to get the firmware file programmed up and back on track. Good luck!

  • mbed told me to copy the a file Called Blinky.bin or something into the "drive". I'll try this out later, thanks for telling me this!

  • Gough,

     

    In my opinion, that might be a tad outdated. Firstly, you can now get small batches of PCB's made with stencil for a fraction of the cost and reflow ovens are much cheaper these days too,  so the bottom line has dropped to make a dev kit. Even PCB design tools are now free (e.g. KiCad) so no more expensive license to be paid for. Then secondly, with the necessity for early field testing of any proof of concept this requires many more dev kits (and sensor shields) to purchased. Hence this increases the top line as demand for dev kits has now exploded with the rise of IoT. Gone are the days where you sit in a lab to test one design and then analyse the heck out of it before going out and procuring a couple of expensive customer boards to test prior to planning for manufacture.

     

    As such, there should be no technical or direct cost reason for dev boards to cost more the $50 a piece, unless uber complicated.

     

    I think, based on my experience, what really eats into the profit margin of a dev kit is corporate overhead, management dithering and changing of minds along the way (usually once designs have been sent for production).

     

    Sometimes the tail (i.e. the dev kit) ends up wagging the dog (i.e. the module itself) for a product launch. This is where the money goes down the proverbial plug hole as external contractors are usually hired in to do the multimedia and marketing stuff only because management are not aware that most of their own young engineers/staff are digi savvy, having been brought up on YouTube etc. and therefore could readily do the same videos in-house for a fraction of the cost (for silos will always remain). Then last but not least there is the documentation workflow, which can often require multiple parties to review and sanction... but this is often cut short to meet deadlines and budgets.

     

    Colin

  • I think that this 60 dollar kit comes with the Microcontroller. The MCU itself is 30 dollars so 30 dollar EV kit isn't as bad as a 60 dollar one.

     

    And, it comes with the EV kit preinstalled.

     

    Sweet.

  • UPDATE: The software simply doesn't work. It doesn't. The board does, transmitting the temperature in hexadecimal format using the COM communication(Putty and Tera), but the software simply can't pick it up.

     

    Maxim support is currently still reviewing my case and I hope I don't have to give a one for software.

  • Sorry your post is a little confusing.

     

    So what software does not work? What's on the board that allows temperature to be read? Is this a correct value or a dummy hex value, for example? You say you can receive hex format via Putty/Tera but software cannot pick it up??

     

    If you post online the code using the

     

    Syntax highlighter option

     

    We can try and help you troubleshoot.

Comment
  • Sorry your post is a little confusing.

     

    So what software does not work? What's on the board that allows temperature to be read? Is this a correct value or a dummy hex value, for example? You say you can receive hex format via Putty/Tera but software cannot pick it up??

     

    If you post online the code using the

     

    Syntax highlighter option

     

    We can try and help you troubleshoot.

Children
  • As part of the roadtest I'm supposed to use the Maxim Integrated GUI software for the MAX31889 Evaluation kit.

     

    The MAX31889EVSYS has a MAX31889 temperature sensor chip on top.

     

    The hex value is separated into two parts, mostly something like 0x16 0x4B, eg. I converted these back to decimal base10 and it's 22 degrees and whatever 4B is. Makes sense, that's the temperature in my house usually, dropped around 10 degrees putting it in a box with a cold soda bottle.

     

    The values come about once per second, each staying relatively the same.

     

    The drivers simulated UART and thus I was able to establish a COM link to COM4(location of the board).

     

    I copied the .bin file that makes the board and EV kit send the data... this shows that the board is indeed detected by the computer, and is actively transmitting with the computer, Device manager shows it's there as well, but the software maxim provided is not able to find it, showing "not connected" despite the board being there and me pressing the scan button and relaunching application multiple times.