Articles

PCBWay, a leading global provider of PCB prototyping and manufacturing services, is proud to announce its 10th anniversary. Over the past decade, PCBWay has grown from a small start-up into a renowned industry leader, known for its commitment to quality, innovation, and customer satisfaction.... [Read more]

. Today I am presenting a firmware change and connection to Home Assistant for another product in the Avatto series. This time it will be a triple light switch based on CB3S. The situation here will be similar to the white single model - I will need to detect the GPIO configuration... [Read more]

Automatic Tuya JSON extraction allows you to automatically configure the GPIO template of your smart device. Unlike in Tasmota, where all GPIO probing has to be done manually, OpenBeken flasher BK7231GUIFlashTool is able to extract the Tuya GPIO roles, so it can automatically tell... [Read more]

. Some time ago I ordered some radio modules with the SX1276 chip for experimentation. After some time, I finally decided to get around to testing them. In order to make a sensible estimate of the range and capabilities of these modules, I built several devices: two serving as receivers/transmitters... [Read more]

. Today we are checking out another extension strip, this time with five coloured sockets with separate switches. In addition, the strip has one main collective switch. The strip is advertised as having an "anti-surge system" and a "protection system for USB-charged devices" so it's... [Read more]

. Today we're tackling another piece of equipment from the electro junk. This time it's going to be a Brother printer, which strangely enough seems to be showing fairly full inks. In its current state it doesn't even take paper, but maybe there's something to fight for? Let's find... [Read more]

I'm hoping this post, and the script herein, will be useful to anyone unsure about posting BL602, LN882H, BK7231N, BK7231T etc factory firmware backup/dump binary files anywhere public, eg these forums on Elektroda. Factory firmware backups can be used to restore devices to their... [Read more]

. Today we continue our adventure with the ESP32 module + touchscreen display version of the ESP32-2432S028R. In this section we will practice interacting with the display using the touchscreen. To do this, we will write some simple interactive programs here, such as measuring the... [Read more]

. Here I will describe the implementation process of sending an IR signal based on a PWM and a timer. The signal sent like this from the microcontroller will be able to control the air conditioning. In addition, the signal format used will be compatible with what Flipper Zero captures,... [Read more]

Hello to all! I recently bought this one for my collection, got it very cheap on sale, but the normal price is also good Link : I found it interesting, compared to the other two similar devices I've been playing with ( TOMPD63-WIFI and TOMPD63-LW because of the graphic screen. OTOH,... [Read more]

The project I present below shows LED lighting ( but can also be classic ) switched on by a PIR sensor. In my case, the inspiration was the notorious spilling of a sweet drink when I reached for it at night. You're sleepy, it's a dark night, you want a drink, but it's hard to hit... [Read more]

OpenBeken has been recently ported to LN882H platform, and I have received few such WiFi modules from our readers, so it was a good time to think about some kind of "dev board" for this new Lighting Semi platform. The modules I received were unfortunatelly not in TYWE3S/ESP12 format,... [Read more]

. Today we are going to try to capture an IR (infrared) signal using Flipper Zero, analyse it both in Flipper .raw format and on oscilloscope and then consider what is needed to send such a signal from within our microcontroller. Flipper Zero allows you to conveniently capture, store... [Read more]

. Today I have another package on the table from a reader in Germany. This time it's an unusual smart socket, seemingly just another version of the popular LSPA9, but here distinguished by an unusual WiFi module from the BK7231M. The BK7231M is essentially the BK7231N but with different... [Read more]

Hello, something other than microcontrollers this time. I decided to test two 1800W 'suitcase' generators from both ends of the price range. A Honda at around PLN6000 and an AIVOLT at PLN1099. Honda purchased in early 2020. AIVOLT this month. HONDA EU22i: Weight without fuel: 21.1... [Read more]

. Today we continue our adventure with the ESP32-2432S028R board. In the previous installment we ran the display and touchscreen, so today we will use that. We'll see what options and shapes we have available for drawing and then we'll consider what are ways to draw efficiently so... [Read more]

Similar topics have already been discussed on the Forum, but my device is the most mine, so I decided to share a report of its construction with those who either have hearing problems or would like to make a similar device for someone with such a problem. I'm not an acoustician and... [Read more]

. The topic of changing the firmware of IoT devices comes up all the time on the forum, but not everyone knows the purpose of doing such a thing. Here I will present one of the advantages of freeing our device from the cloud, namely the possibility of significantly extending its functionality... [Read more]

The hot weather is coming, so you need to run the air conditioning - all the more so when there is a computer constantly running in the workshop stubbornly heating up the room. The situation gets complicated, however, when you don't have permission to install a full-fledged air conditioner... [Read more]

. Here I will present an interesting RGBCW lamp driver with a communication protocol very similar to the WS2812B diodes. I became interested in the subject at the request of a reader from Germany, who even sent me a "smart" lamp with this very driver so that I could try to decrypt... [Read more]

We've been recently looking for a way to buy brand new Tuya modules, especially CB3S/CB2S (BK7231N) and WB2S (BK7231T). BK7231N is a bit newer and has more advanced support in OpenBeken (deep sleep and WS2812B), so it was our primary focus. Here I will write down our experience. Our... [Read more]

I wanted to present a project that I have spent a total of several weeks of my life on. A GPS tracker that sends data to the cloud via Iridium satellites or the LTE mobile network. The project was battle-tested on an expedition yacht that reached Spitzbergen by sailing through the... [Read more]

. The FOX ENERGY-3 (commercial index WI-MEF-3) offers indispensable support in controlling energy consumption and monitoring electrical network parameters. Due to its characteristics, the WI-MEF-3 is excellent for, among other things, energy control and billing in homes and rental... [Read more]

. Here I will present an ESP32-2432S028R board offering, first of all, a large 2.8" TFT colour LCD display based on the ILI9341 (display) and XPT2046 (resistive touch panel, including stylus) controllers, all for just about PLN50. I'll show here how to operate this display in PlatformIO... [Read more]

Today, we are going to hack a ... water heater. This time, minimal soldering will be involved. Long story short, about two years ago, I got myself a new heat pump water heater . A heat pump heater is about 3x more efficient than an electric one, and everything is nice, except for... [Read more]

. I invite you to the second part of the adventure with the Wemos D1 ESP8266 board and the DHT11 temperature/humidity sensor. In this part I will expand my program to write the results to the Flash memory of the ESP8226, I will use a library with the graceful name EEPROM . Why is... [Read more]

In one of the topics on our forum, not at all about computers, more about automobiles, a question was asked about Soviet hardware. At the time it was about the Agat, which many people thought was a clone of the American Apple II. Unfortunately, when I lived in the Soviet Union, I... [Read more]

Here I will show you how to flash BK7231M chips (or BL2028N) with our open source, Tasmota-style firmware. BK7231M/BL2028N are very similiar to BK7231N, and the only difference in the encryption key stored in efuse. Tuya BK7231N seems to be using always the following key: 510fb093... [Read more]

Convenience and protection from the heat - control your roller shutters and facade blinds! . . Summer is fast approaching, and with it comes intense sunshine and high temperatures. Are you ready for the heat? According to forecasts from the Institute of Meteorology and Water Management,... [Read more]

. The S1TW-FR is a plug-in energy meter with LCD screen and additional probe/temperature sensor. The S1TW-FR stands out from other Tuya products and offers truly extensive functionality, accessible both from the manufacturer's mobile app and directly from the buttons on the device.... [Read more]