Most of the problems can be solved by using different power source. Even if you are pretty sure that "this one is OK".

Try to use another power source. Be sure in correct polarity before plugging power source.

We are sorry but we cannot change for free soldered and/or mechanically damaged modules. If you need to solder "Mini-Monster" or have trouble in mounting be sure to contact us first. We will try our best to help.

We invented the device and since then have been producing it ourselves.  We are “Mini-Monster Project” from Moscow, Russia.

Use “port forwarding” feature in your router, like this:

IPv4-TCP, UDP From any host in wan any router IP at port 8680 --> IP 192.168.0.12, port 80 in lan

Then, Module can be reached by using http://your-external-address:8680

To access from internet, your router must have “real” (“white”) IP.

Every Module has the same MAC-address. Therefore if you'd like to use multiple Modules, you have to set unique MAC to each of them.

Yes. Starting from firmware version 2.5, our "Mini-Monster" supports SNMP v.1 and responds GET and GETNEXT queries. Moreover, we have MIBs for our Module. (Please, see in "Downloads")

If there is no announcement about it – we do not know :)

However, for a certain fee we can implement changes to Module’s hardware and software to meet your personal requirements, provided we receive detailed technical specification from you.

Sure. Please, send the detailed technical specs to  .

No

Android – please click here (or simply check "Mini-Monster" in Google Play)

Windows Phone 8, 8.1 Marketplace.

iOS – coming soon.

Yes. We do not provide “standard kits” because everyone has special needs.

Yes. The simpliest way is to power up the Module by computer’s power supply (5 or 12 V).

Then you need to connect computer’s reset input to one of Module’s DRCA outputs. We strongly recommend to check hardware (motherboard etc) manual first.

Example:

Average temperature is +25 C . Hysteresis is 3.

If thermostat is connected to the heater, then heater turns ON. While temperature (from thermosensor) is less than 25 minus 3 = 22 C, heater stays ON. When temperature reaches 25 + 3 = 28 Сthe heater  is turned OFF by thermostat.

You can use “normally closed” relay, then when Module's output is ON, relay will be OFF. Also, you can reduce power consumption by using this type of relay.

Load’s positive (“+”) – to power supply. Load’s ground (“-”) – to Module’s output.

If current load is less than 300mA, load can be connected directly.

On «main» page turn every switch you need to be ON after reboot, then press SAVE under switches.

You can use software like wget and control Module by sending http requests.

Create a bat/cmd file like this:

C:\wget\wget.exe http://192.168.1.8/password/?sw=6-0 --spider --timeout 1 -t 2

Explanation:

C:\wget\wget.exe

where wget.exe located

http://192.168.1.8/password/

your Module's IP adress

?sw=6

output number (form 1 to 6)

-0

1-ON, 2-OFF

--spider

wget parameter, request without saving answer

--timeout 1 -t 2

timeout and tries, if Module is unreachable

You can create more than one command in one bat/cmd file.

You need:

- reliable and tested DC power source 5-24V.

- for high load control -- relays with coil voltage equal to DC source voltage

- for temperature measurement and thermostat function -- digital sensor DS18B20(+).

One NTC sensor can be connected to the Module. “Mini-Monster” is designed for 10kOm sensor. ADC conversion proceed by using appropriate table of values located in FLASH memory. MCU's ADC capacity is 10 bits.

Yes. Weatherproof thermosensors and some other useful accessories can be purchased from us directly.

You need reliable and tested DC power adaptor, 5-24V and 200mA + relay current consumption. Check that DC power on load does not fall below 5 V. It is better to have DC source with higher amperage. The voltage depends on the used relay. If wire to a relay is long or you’re using PoE, you have to use higher voltage DC source.

DRCA and "32+" model have ULN2003 Darlington assemlby for relay operating. It has protective diode that will be useless if power sources of the Module and relay are different. If for some reason different power sources are needed, then you need to make joint ground AND connect external protective diode to every relay, othewise protective diodes of the Module will be damaged.

There is no protection in the Module from polarity reversal. After incorrect DC connection the Module will be corrupted.

That was short circuit. Check connections carefully before power connection to the Module.

There are two possible ways:

1. Connect The Module to computer's +5VSB, there is always power there even if PC is in comletely OFF state but connected to AC;

2. If you want to use separate power supply you have to join Module's ground and PC ground, or use a relay as galvanic isolation.

In any case, we strongly recommend to check your hardware manual first.

Looks like you are using Internet Explorer 8 or earlier version. We recommend to use more actual browser.

High voltage inductive loads generate short but high voltage jumps during power on. Due it's low-voltage design "Mini-Monster" cannot prevent or manage this jumps. We recommend to use high voltage capacitor C1 parallel to load and charging current limiting resistor R1 to C1. Rought values are:

C1 – main voltage * 2,5 , capacity 0,1 uF ;

R1 – 330 Ohm .

Yes, that's the way DHT-22 works. It doesn't mean your DHT-22 is broken, next measure will be correct. "Mini-Monster" makes one humidity measure in 5 (five) seconds.

Some times there are read errors on DHT-22 when measuring humidity. Mini-Monster's internal monitoring system counts these errors and turns off DHT-22 when there are more than 5 errors in one work session, and humidity amount becomes "e" ("error"). Reading errors can indicate that DHT-22 is broken. But in most cases DHT-22 works fine after power reset. You can make DHT-22 power reset in "main" -> "DHT_POWER"