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  • 29/09/2017

    If you want the cheapest GSM module to send/receive SMS and for basic GPRS usage, this is perfect. Only problem is that, not only is fully undocumented, but there are several other boards based on M590 and the online discussions regarding them may disorient you. You can find the very good hardware design manual and the M590 AT command set in the Neoway site, but there is almost no info on the board itself. I finally found the pinout here: http://arduino.ru/forum/apparatnye-voprosy/ne-rabotaet-neoway-m590 For power, M590 specs define an operating range of 3.3V to 4.5V. The board connects VCC connector pin directly to the M590 VBAT pin without any staging or protection. You need a power supply that can provide 2A, because even if you can establish communication with the module with AT commands, when the RF module kicks-in sending or receiving an SMS, the board restarts if you cannot provide enough current. Do not even think of using power from arduino boards. Note also that USB chargers claiming 2A output, may drop voltage from 5V to 3V when loaded at 1A. M590 I/O pins operate at a reference voltage of 2.85V. The board has 1K resistors ins series with Tx, Rx pins and a 10K resistor tied to VCCIO, so connecting the board directly to arduino pins worked for me. Only problem is that due to the internal clamping diodes of M590, the 5V voltage from arduino Tx pin appears in VCCIO and VBAT pins. I am waiting my order for an adjustable voltage power supply to straighten things out.

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  • 18/12/2017

    GPRS Module NEOWAY M590 para Arduino M590 is a kind of single-chip GPRS industrial wireless module with data only. It has SMS, data service and other functions. product features: Dual-band:900/ 1800 MHz Good network compatibility:Certified by the global GPRS R4 agreement Operation temperature :-40~+80℃, more safety outdoors High reliability:Special EMI/EMC design, still as steady as a mountain with bad electromagnetic environment

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  • 26/03/2018

    This was a re-send of a dead-on-arrival product. Everything was organized very quickly and professionally by BG. This time the quality is very good. Device works like a charm. Also the package it self was well protected. I recommend this as I am satisfied.

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  • 17/06/2017

    На фото не очень хорошо видно, но модуль с обратной стороны весь в пыли и пятнах грязи. Контакты погнуты. В держателе стояла какая-то симка, тоже грязная :) Модуль явно откуда-то демонтирован. Работает. А большего за эти деньги требовать и не стоит.

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  • 13/10/2016

    http://cyntech.co.uk/downloads/neoway-m590-at-command-sets-v3.pdf : command references The boot sequence is quite tricky, but it is well explained here : http://www.academia.edu/15633281/GSM_GPRS_Modem_-_Neoway_M590E I use it for SMS send/receive only, and it does its job well. Didn't try GPRS comm yet.

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  • 03/08/2016

    This thing worked really well.First time trying one of these and no problems with the Meteor network in Ireland -Vodafone would not work- One thing though; its a beast on power spikes when transmitting and can brown itself out if there is not enough power I have seen >350 mA, this is common with GPRS modules though, just something to keep in mind if you are going to use battery power. putting a big cap on the supply helped for me.

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  • 04/11/2019

    everything came properly packed. the instruments do not show any damage

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  • 11/09/2018

    Le produit Correspond bien à la description. Le produit est fournis en pièce détachée, donc à vos fers à souder !! La livraison est un peut longue, mais dans les délais. Produit reçu en bon état.

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  • 15/09/2017

    Encore une fois, faire très attention aux tensions d'alimentation, ne pas dépasser 4.8v et ne pas dépasser 3.3v sur la RS 232.

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  • 18/02/2017

    This is the second unit that I've bought. The first came without an antenna. This one included the antenna. As before, some of the parts are used, but this time the quality was a little better. I've assembled both of the units and can communicate with them fine from a computer. I have not been able to get them to connect and send messages with "T-Mobile". I have another SIM on order from "Hologram" and I am hoping that they will work with that network. It would be nice to know what network(s) these will work on if anyone else has got them to send messages.

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