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About this RoadTest

Designed specifically for cellular-enabled IoT applications, mangOH™ Green provides a sensor-to-cloud platform for rapidly prototyping ideas and getting them to production quickly. The new open hardware will make it easy to develop industrial-grade products with vetted components, open source software, and a business-friendly open license to modify and reproduce the design.


In addition to the mangOH Green board, road testers will get access to:

  • Wi-Fi/Bluetooth IoT Connector
  • RS232 IoT Connector
  • RS485 IoT Connector
  • Seeed studio Arduino shield and temperature/humidity sensors
  • Eurocard case


The mangOH Green board itself fits into any standard Eurocard case and there are 3D printable end pieces that can be customized depending on which IoT Connectors are incorporated in your protoype. The board features:


•     WP8548 module with ARM Cortex-A5 Processor, GNSS Receiver, and 3G Modem

•     3 x IoT Connector Slots

•     2 CF3 connectors (primary slot for the WP8548)

•     1 Arduino compatible connector

•     USB/RS232/RJ45/Audio connectors

•     MicroSD Card slot

•     Cellular and GPS antenna connector options

•     On-board sensors

•     Battery Management circuitry


The WP8548 module runs the open source Legato Linux providing a secure application framework, Linux distribution, and multi-language development environment. The robust connectivity APIs make it easy to access cloud and network services such as voice calls, SMS, and data. mangOH Green also provides a free account to the AirVantage® Cloud to managing your boards and storing your IoT data.


For more information go to: and

Terms and Conditions

mangOH™ Green

Terms and Conditions


These are the terms and conditions which govern the mangOH™ Green RoadTest. 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.

1. 1 The Principal terms of the Contest:

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

RoadTest: mangOH™ Green (or the Contest)

Key dates:

Applications Close: midnight (GMT) on 13 May  2016

Judging Close: 11:59PM (GMT) on 20 May 2016

Announcement of Winner(s) (estimated):  20 May  2016

RoadTest Item(s): mangOH™ Green


RoadTest Site:

Site or element14 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:

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

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

1.3 • A thorough description of how the prize would be tested

1.4 • Likelihood that the Applicant will blog about the prize and provide a review on

1.5 • Originality;

1.6 • 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:

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

Minimum number of Prizes: 5

Terms: these terms and conditions which govern the Contest 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. 2 Eligibility

2. 3 Applications:

3. 4 Selecting Winners:

4. 5 Liability:

5. 6 General:

1.8 2.1 Save as set out in these Terms, the RoadTest is open to any natural or legal person, firm or company or group of natural persons or unincorporated body.

1.9 2.2 All Applicants must be aged at least 18 at the time of their application.

1.10 2.3 Applicants must not enter the Contest if doing so or taking part may:

1.10.1 2.3.1 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;

1.10.2 2.3.2 Require the Organiser to obtain any licence, authorisation or permission to deal with the Applicant; or

1.10.3 2.3.3 Be in breach of any policy or practice of their employer. Some employers prohibit or restrict their employees from taking part in contests such as these or receiving prizes under them and the Organiser respects those policies and practices.

1.10.4 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.

1.11 2.4 Multiple applications are not permitted.

1.12 2.5 Applications may not be submitted by an agent whether acting on behalf of an undisclosed principal or otherwise.

1.13 2.6 The Contest is NOT open to:

1.13.1 2.6.1 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;

1.13.2 2.6.2 Any employee, director, member, shareholder (as appropriate) or any of their direct families (parents, siblings, spouse, partner, children) (“Direct Families”) of the Organiser.

1.14 3.1 Each Applicant must fully complete and submit a response by the Application Close.

1.15 3.2 By submitting a response, each Applicant:

1.15.1 3.2.1 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;

1.15.2 3.2.2 Authorises the Organizer to copy, reproduce and publish their application should they be accepted as a Participant;

1.15.3 3.2.3 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;

1.15.4 3.2.4 Authorises the Organiser to copy, reproduce and use the application or subsequent Blogs submitted for the purposes of the Contest 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.

1.15.5 3.2.5 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.

1.15.6 3.2.6 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;

1.15.7 3.2.7 Agrees to participate positively in all publicity surrounding the Contest;

1.15.8 3.2.8 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);

1.15.9 3.2.9 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;

1.15.10 3.2.10 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 Contest.

1.16 3.3 All applications submitted to this Contest must meet the following criteria:

1.16.1 3.3.1 Applications must not include or propose any of the following, the inclusion of which shall render any application null and void:

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

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

(c) (c) Applications or 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.

1.17 3.4 No proposed 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.

1.18 3.5 A proposed Application must not have been entered into any other Contest, unless that Contest has closed and the Application did not win a prize.

1.19 4.1 Winners will be selected by the Organiser on the basis of the quality of his or her Application and its adherence to these Terms.

1.20 4.2 The total number of Winners selected will be at least the minimum number set out in condition 1 above but the actual number is at the sole discretion of the Organizer.

1.21 4.3 The Organiser will use all reasonable efforts to announce the Participants within 10 business days the Applications Close.

1.22 4.4 The winner(s) will be selected by the Organiser in their absolute discretion based on the Judging Criteria. Winners must meet all eligibility requirements of these Terms. There shall be such number of winners as the Organiser shall determine.

1.23 4.5 The Organiser’s decision is final and without right of appeal. No correspondence will be entered into. The Organiser reserves the right not to select a winner if, in their sole discretion, they do not consider any of the applications to merit the Prize.

1.24 4.6 The Organiser will use all reasonable efforts to complete judging by Judging and Voting Close and to notify the winner(s) via a blog posted on the Contest Site by the Announcement of Winner Date.

1.25 4.7 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.

1.26 4.8 Details of the Winners will also be published in the media.

1.27 5.1 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.

1.28 5.2 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.

1.29 5.3 Subject to 10.2, 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 Contest 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 Contest, 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.

1.30 6.1 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.

1.31 6.2 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 Contest of this nature. The Organiser has the right to cancel or suspend the RoadTest at any time due to circumstances outside its reasonable control.

1.32 6.3 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.

1.33 6.4 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 RoadTest Site and it is a condition of entry to the RoadTest that Applicants and Winners agree to comply with these Terms and, if appropriate, such Terms as amended from time to time.

1.34 6.5 Headings are for convenience only and do not affect the interpretation or construction of these Terms and Conditions.

1.35 6.6 These Terms and the operation of the RoadTest 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.

1.36 the exclusive jurisdiction of the English courts.

Comment List
  • The DragonBoard 410C also comes with 1.8v GPIO so I have to agree that this seems to be the way everything is going. It should help massively for power consumption and running things off batteries, although it does introduce other problems such as only being able to directly connect Red LEDs image as the blue ones have a higher voltage requirement.

  • Hi Kas,


    I agree that 1.8V is a pain, I don't like it when prototyping either. But, although many of us don't like it, it's a progression that we will find it hard to fight off, this is the way all modules are going. The Intel Edison is the same, and that was released several years ago. All we can do is find our ways to work with it.

    It was the same with the transition to 3.3V, it was just a few years ago that people were saying they were unhappy with the transition to 3.3V and they preferred 5V I/O. Now 5V-only I/O feels like a dinosaur.

    Having said that, the mangOH board actually uses quite a lot of I/O expanders which provides a lot of flexibility (like the three IoT connectors and the Arduino compatibility) and some of the chips used are 3.3V-tolerant. So, for example, it would not be difficult to make the IoT connector I2C connections 3.3-V capable by removing the resistors that are tying the I2C bus to 1.8V, and using your own resistors to pull up to 3.3V on your own circuit side. Although I'm not suggesting people to modify the board, it is an option if someone really wanted 3.3V compatibility without adding their own hardware to do the translation.

    Similarly, there are USB connections on the IoT connector slots, and these use 3.3V anyway, so no issue with attaching a USB device.

    There is also SPI on the IoT connectors but that would need level translation and they are not 3.3V tolerant.

    I wish I could state more on the commercial example that I saw but I can't. All I can state is that they used the mangOH reference design to initially prototype, and then went through their prototype build, and now have near-production-ready hardware along with enclosure etc., and of course software. So Sierra do have commercial design wins with this particular part. And there are other parts in the family too, with 4G/LTE as an example. These are all off-the-shelf parts that that people can really use (they have 0.8mm spacing, which anyone with EAGLE and a few tens of dollars to spend on PCB prototypes can use) and get the performance in the ballpark of some of the Raspberry Pi's into your own designs, so the 1.8V thing is extremely minor and would be a benefit to some anyway, depending on what was attached.


    Regarding the need for Linux, that's a major benefit. It is the thing without which we couldn't have (good) over-the-air application installs, application reliability (reducing the risk device reboots), all the benefits of containerized apps like versioning and ability to revert to the last known good software, good (peer-reviewed) secure connections, a huge wealth of drivers, and access to decades worth of known working applications.

    Sierra offer more than the Linux and hardware though. They have all that middleware i.e. Legato (I had to perform an upgrade, but this is something to be expected, nearly all shipped software with any vendor is usually out-of-date) and their cloud platform, and all these things work together, or people are free to ditch them and use their favourite compiler and cloud platform. Bare metal isn't advisable and would offer no technical benefits, and would eliminate all the Linux benefits mentioned above. For those who want to use bare metal, there are cellular modems with AT command set that can be attached to a microcontroller, and there are massive use-cases for that too, but where one might want to deploy upgrades to functionality over time, or have good maintainability without having to physically drive around to each device, the Sierra Wireless offering makes a lot of sense too. Not saying people couldn't do that with bare metal, but it's a lot of hard work.

  • I was offered a mangOH red back in January (that was when the plan was to have the project completed before then) but as I have not gotten that far that offer is still on hold. I'm more interested in the offer for a SIM card I can use which was supposed to be shipped a month ago... I know Canada post is slow but I don't think its that slow.


    As for code, it's there but its documentation is lacking. I did one blog for Sierra and that was just how to upgrade your board (the firmware and framework). That blog I think is now obsolete (it was written in December or January) because of the changes they made.


    As for less animals that will kill you, I like that. I'm not a fan of being surrounded by things that can kill me.



  • I'm actually in NZ. It's a lot like Australia, but without the Australians and less animals that want to kill you :-)


    Thanks for your second point of view. I did wonder whether this platform was suitable and mature enough for a commercial project, and was a little dubious based on my previous experience with other Sierra Wireless products. I was also concerned that documentation and example code still seemed rather sparse considering the board has been out for a year or so.


    I note there's a new mangOH Red board which is either released or in development, it's hard to find out which and there's little to no documentation yet.


    I'd offer to lend you one of my boards to play with to see how you like it but I see you're down in Ausi land. I'd really love to hear more about this from someone with a much stronger Linux background.



  • I must respectfully disagree with . As someone working to get a very basic but not canned project working I found it very convoluted and difficult, I must admit though I'm more bare metal embedded then linux "embedded". The voltages used are not very friendly either. They have decided to go with 1.8v on all GPIO and external pins which is nice if you are using the latest and greatest components but most things still uses 3.3v. I also found it interesting that they are moving to 1.8v because it's the latest and greatest but when I wanted to try the Arduino demo they use a USB mini not micro, that took some digging for. To add insult to injury debugging is not easy with GND being hard to find or connect to and test points... well...


    The biggest issue I found was the claim that it works with all Cell networks... Except for the one I use which is becoming more mainstream in the Sierra Wireless's home country. OK so I thought I'll use ethernet/WiFi AirVantage ONLY works over cell connection I was informed. I guess you could rewrite code yourself but that was not something i was going to do. And while this may be possible the support I'd need for that would just not be there. The two or three guys giving support on are doing the best they can, they can't maintain the code base and do support at the same time. Besides I needed support just to get the board up and running as the software updates kept changing to many basic things to keep a beginner working.


    All this being said I still have plans to complete my project and hopefully a more interesting future one I'm just not holding them to the easy part of their claim any more.


    In short, if Linux is your baby you could get through it if it's not you may want to look at another platform for your project.



  • Exactly what I was looking for, nice review thanks.

  • Jeremy,


    Thanks for bringing this up. This roadtest was before I took over the program. I saw that the official RoadTesters were not posted so I went back to the applications. None of them were approved as official RoadTesters. So, this can only mean no product was sent out. Let me talk to my boss and see what we want to do about this. Sorry for the inconvenience.


    Randall Scasny

    RoadTest Program Manager

  • I got the chance to review it on a different roadtest (it was tested about the same time as three other IoT kits), here:

    mangOH Green Starter Kit IoT Prototyping Kit - Review


    It was amazing how good the hardware and AirVantage (their platform) was. Definitely one of the smoothest ways to IoT nodes. Mind blown : )

    AirVantage takes care of all of the difficulty in management and deploying software out to the field of devices.

    Others agree the hardware is great too, the proof is in the pudding after all and just by chance last month I saw some business that I know of had used the hardware design to build a commercial product.

  • Thanks for the links, but I've seen them :-) Was just hoping for a review.


    It's not the cheapest of kits, and it's currently out of stock. On the flip side however, it's nice the designs are all open source.