Today.... This MQ2 gas sensor with Neopixel RGB lamp on top and a capacitive touch button under the circle mark on the front.

It is part of the d-diot project. The files of the 3d-printable case are available in Thingiverse.

The firmware is available here, the wiki page is under construction.

In the next weeks I will try to print it in wood... Just to increase the WAF

Hi guys,

my last creation: the d-diot hub v.3.0

The hub A (wood) is a dual MySensors gateway (RFM69 and NRF24) based on two ESP8266 modules and a BLE gateway + RGB controller thanks to an ESP32 module and ESPHome firmware.

The hub B (grey and red) is an IR gateway and RC 433 Mhz gateway based on ESP32 modules with an ESPHome firmware. The hub B has also an integrated step-up and step-down voltage regulator based on Arduino Nano.

To allow the maximum flexibility in placement inside the house, each module can be build as a stand-alone piece of hardware or combined in a single device (see pictures).

The hub is meant to be used with Home Assistant, the case is 3d printable and as usual, if someone is interested, there is a dedicated wiki page with all the details and the build instructions.

Hi guys,

today I have finished the 3d printable case of the d-diot hub.

The hub basically is a Raspberry Pi 3 with the d-diot board (see this topic) that offers the following functionalities:

• IR Gateway (blaster and receiver) to control every device that has a dummy infrared remote.

• 433 Mhz Gateway with the RFLink firmware running on the on-board ATMega2560 microcontroller

• Dual MySensors Gateway: NRF24 (2.4 Ghz) and RFM69 (868 Mhz).

• Latch circuit to power-on and safely power-off your Pi with a simple button press.

• SSD1306 I2C Oled display controllable in Home Assistant

• Radio activity LEDs for IR and Mysensors gateways

• Nice and powerful web interface thanks to Home Assistant

• Easy setup and configuration with the d-diot image

If someone is interested, here the detailed build instructions.

@nca78 thanks for the info! I have seen that the Anycubic resin is available also in big online stores like Amazon, so fast delivery time guaranteed.

@NeverDie: Unfortunately the fragmentation is the dark side of the moon of the open source world, but in my opinion the quality of some project here is really awesome and above the average, so it is a shame that they don't have the adequate visibility. In addition in this last months some big pcb manufacturers like JLPCB have included in their offer an assembly service, so, with the adequate visibility and documentation, the entry barrier for new users in the DIY home autmation could be not so high.

@berkseo The "marble" case is very cool! The filament is easy to print or requires some special parameters? For example in this days I'm fighting with a wood filament, below the results

Hi guys,

this is my last node. A 3d printable smart USB power hub.

If someone is interested, here all the details.

Dear makers,

after a lot of learning and some tentatives, I have finished my d-diot project.

Basically it is a board that sits on top of a Raspberry Pi and has the following features:

• Latch circuit to turn on and off safely your Raspberry Pi with the SW1 button.

• Infrared receiver and transmitter with activity LEDs.

• USB port to add extra infrared transmitters (or simply charge your phone).

• DC power jack and power status LEDs.

• 433 Mhz Gateway (RFLink) with the Atmega2560 microcontroller and 433 Mhz radio modules (FS1000A and RXB6)

• MySensors dual Gateway with NRF24L01 and RFM69 (868 Mhz) radio modules and radio traffic LEDs.

• I2C OLED Display (SSD1306) controlled through Raspberry GPIO.

• FTDI and ICSP connectors to program the ATMega2560 microcontroller.

• Step-up and step-down voltage regulators.

• Fan pin header.

• Footprint for optional high gain 433 Mhz and 868 Mhz antennas.

A pre-configured Raspbian image image with Home Assistant and MySensors is also part of the project.

In the d-diot wiki you can find a detailed description of how I have configured the Raspberry to support two radio modules.

Maybe this can be usefull for some other people.

If someone is intersted on the project, well simply contact me.

Any comment or suggestion is well appreciated.

Hi, finished two nodes based on the same multi-purpose battery powered pcb (all the documentation here)

One is a door / window sensor based on a Reed switch.

If someone is interested, the dedicated wiki page contains the detailed build instructions.

The other is a soil moisture sensor.

For this one, the wiki page is here.

Happy Easter, even if at home!

Hi guys, project finished! Now the led are under the Fresnel lens, so the design of the case is more clean (WAF +10 ).

The final result:

With 2 x AAA batteries and the RFM69 radio module the node works very well and the total cost of the parts is about 10€.

If someone is interested, here a detailed build guide, with the links to all the parts of the project (3d model of the case, Kicad project, gerber files, BOM, firmware).

Found a solution! It is quite easy with the custom board features of PlatformIO.

I wrote a brief tutorial here.

Tested with a Pro Mini 8 MHz 3.3V and FTDI programmer.

Unfortunately I don't have here a 16 MHz 5V devices to test

@zboblamont A cheap and silent alternative could be one of this qotom mini pc.

I'm using one of this as a virtual machine server with proxmox since 2-3 years and I'm very happy with it.

One of the vm is running pfsense so it act also as a main router / firewall for the entire Lan.

The backup of a vm is super easy but the initial setup of the environment requires a bit of Linux learning

@DenisJ the link is broken, so I have not seen the contacts that you have bought, but if they are just a little bit smaller and they can fit the hole on the pcb, they should be OK.

@DenisJ : Glad to know that this work has been useful for you in some way.

Regarding the AAA battery holder, the footprints on the PCB are for a Keystone 5204 (negative) and Keystone 5226 (positive) contacts.

I have purchased them on ebay; unfortunately the item that I have purchased is not more available, but this one appears to me like the same thing.

Hi guys,

my last creation: the d-diot hub v.3.0

The hub A (wood) is a dual MySensors gateway (RFM69 and NRF24) based on two ESP8266 modules and a BLE gateway + RGB controller thanks to an ESP32 module and ESPHome firmware.

The hub B (grey and red) is an IR gateway and RC 433 Mhz gateway based on ESP32 modules with an ESPHome firmware. The hub B has also an integrated step-up and step-down voltage regulator based on Arduino Nano.

To allow the maximum flexibility in placement inside the house, each module can be build as a stand-alone piece of hardware or combined in a single device (see pictures).

The hub is meant to be used with Home Assistant, the case is 3d printable and as usual, if someone is interested, there is a dedicated wiki page with all the details and the build instructions.

Hi guys,

this is my last node. A 3d printable smart USB power hub.

If someone is interested, here all the details.

Interesting topic!
I agree, the amount of time required to learn how to do the things is quite high and after a lot of research you will find that other people have had the same issue... so in the end you have just reinvented the wheel!

In any case I think that MySensors is a very good project and probably underrated respect to how good and useful it is for a maker that wants to build its own domotic sensor and actuators.

For the reasons above (and others), some times ago I have started the d-diot project:

• The hub (Raspberry Pi + d-diot board) implements, among the other things, two MySensors gateway (RFM69 868 Mhz + NRF24L01). All the software configuration steps are well documented in the dedicated section of the wiki.

• In general the software part is easy because all is preconfigured in the d-diot image. Just burn the iso image to an SD card and you will have Home Assistant and MySensors working and ready to go.

• 3d printable sensors and actuators and the relative PCBs and firmware are part of the project. All parts (hardware, firmware, 3d printable case) are open source

• In the wiki you will find the detailed build instructions (with pictures) for each device, so @mhkid and @Psilin maybe here you can find some useful information or a at least a good starting point for your nodes. In particular the Mini-BT-Pcb-328P is a general purpose and flexible board that could be useful for a lot of small (battery or USB powered) RFM69 or NRF24L01 nodes.

Now I'm in contact with PCBway, a PCB manufacturer that offers also soldering service, so If there are enough people interested, I think that it is possible to start thinking about the possibility to start a small production of some boards, maybe already assembled. In my opinion this will be helpful for other people.

Let me know... maybe we can start something

@NeverDie a sodium hypochlorite solution is what is commonly known as bleach. Probably is more convenient to buy it rather than produce them.

Just to give you an idea, below a picture of a famous bleach commercialized in Italy... Maybe you have the same brand in your country

Your question about the concentration and efficacy is interesting.

Hi guys,

today I have finished the 3d printable case of the d-diot hub.

The hub basically is a Raspberry Pi 3 with the d-diot board (see this topic) that offers the following functionalities:

• IR Gateway (blaster and receiver) to control every device that has a dummy infrared remote.

• 433 Mhz Gateway with the RFLink firmware running on the on-board ATMega2560 microcontroller

• Dual MySensors Gateway: NRF24 (2.4 Ghz) and RFM69 (868 Mhz).

• Latch circuit to power-on and safely power-off your Pi with a simple button press.

• SSD1306 I2C Oled display controllable in Home Assistant

• Radio activity LEDs for IR and Mysensors gateways

• Nice and powerful web interface thanks to Home Assistant

• Easy setup and configuration with the d-diot image

If someone is interested, here the detailed build instructions.

@BearWithBeard I love the video of the swiss guy!

@NeverDie Good question. My is too young (2 days) to say something.

Here a possible solution. See at about 9:50

Hi, finished two nodes based on the same multi-purpose battery powered pcb (all the documentation here)

One is a door / window sensor based on a Reed switch.

If someone is interested, the dedicated wiki page contains the detailed build instructions.

The other is a soil moisture sensor.

For this one, the wiki page is here.

Happy Easter, even if at home!