ESP32

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Electronics

Using PCF2129, a real-time clock IC, with ESP32

PCF2129 Operates at 3.3V The PCF2129 is a real-time clock IC that can run at 3.3V, and is connected to the micro...
Electronics

All the numbers were displayed by dynamically lighting them with the beautiful and transparent VFD display tube IV-27M

In the previous article, I displayed only one digit, but this time I would like to dynamically light up and display ...
Electronics

Displaying a single digit number with the beautiful and transparent VFD display tube IV-27M

This time I would like to control the IV-27M with ESP32 and display the numbers. Here is the previous experimental a...
Electronics

I turned on the VFD indicator tube IV-6

I lit up a VFD indicator tube IV-6 that I bartered with a retro indicator tube enthusiast in Ukraine. Here are th...
Electronics

ESP32 reduced current consumption during DeepSleep by putting HX711 into power down mode.

I configured a scale with HX711 and made a mailbox that notifies me when there is mail. By replacing the regulator w...
Electronics

ESP32-DevKitC's DeepSleep is consuming quite a bit of current, so I investigated the cause.

The ESP32-DevKitC is a board that makes it easy to use the ESP32. I often use not the Espressif Systems genuine E...
2021.04.28
Electronics

Added thermometer to NTP calendar & clock of Canon Canola L1211 display

I added a thermometer to an indicator that was manufactured during the short period before the transition from Nixie t...
Electronics

Revenge of buck-boost DCDC converter circuit to operate ESP32 with two batteries

In the previous circuit, when the ESP32 tried to connect to WiFi, the voltage dropped and the ESP32 rebooted. This tim...
Electronics

Make a circuit using CH340C for ESP32 writing (success).

The circuit I made the other day could not recognize CH340K on my computer, so I used CH340C to make the circuit. ...
Electronics

Make a circuit using CH340K for ESP32 writing (failed).

In order to write the ESP32 from the Arduino IDE, a USB serial conversion IC is required. This time I would like to ...
Electronics

The NTP calendar & clock was completed by controlling the display of Canon Canola L1211 with ESP32.

Making the clock with a Canon Canola L1211 display unit I would like to make the clock, since the work I have done un...
Uncategorized

The display of Canon Canola L1211 was dynamically lit with ESP32, and 11-digit numbers could be displayed.

Each segment of the display unit of Canon Canola L1211 can be turned on and off by ESP32Last time, I was able to tur...
Electronics

Canon Canola L1211's display unit controlled by ESP32 to display a single digit number.

Each segment of the display unit of Canon Canola L1211 can be turned on and off by ESP32. For more information about...
Electronics

The mailbox with a built-in "scale" that notifies me by e-mail when a mail arrives has been completed!

I have completed a mailbox that detects the arrival of mail by weight and notifies me by e-mail. Weighing with HX71...
Electronics

Make a power supply circuit (step-up/step-down DCDC converter) to run ESP32 on about two batteries.

ESP32 is a microcontroller that operates at about 3V to 3.3V. I'm going to make a DCDC converter circuit to run on a...
Electronics

Designed a power supply circuit to operate the ESP32 with two batteries (actually, I did not design it)

I want an ESP32-DevKitC that runs on batteries ESP32-DevkitC is a board that allows you to use ESP32 easily. ESP32-De...
Electronics

Sending measurement data to Ambient to check the stability of strain gauge "scales".

I would like to leave the "scale" I made the other day outdoors for a few days to check the fluctuations in the read...
Electronics

See if I could measure the correct weight with a "scale" made from a strain gauge.

I did an experiment to see if the "scale" and the program I made the other day could measure weight correctly. H...
Electronics

Modify the circuit of the HX711 module to operate at 3.3V and measure the weight with ESP32

HX711 module is 5V specification The HX711 module sold on Amazon is designed to work with a 5V power supply. Since th...
Electronics

Made the e-paper control PCB with GPS function.

I made a control board for an e-paper that has a GPS module and can keep accurate time at any time. Printing solder...
2021.03.17
Electronics

How to make an alarm clock-like nixie tube clock(3/4) Remodeling of the alarm clock

Now that the PCB is complete, I'd like to modify the alarm clock to incorporate the board and assemble an alarm cloc...
2021.04.18
Electronics

How to make an alarm clock-like nixie tube clock(2/4) Soldering and Assembly of Main Board

Since the surface-mounted components of the main board have already been mounted, only the DIP-style components are ...
2021.04.18
Uncategorized

Animation can now be displayed on e-paper

The CPLD is used to perform high-speed serial-parallel conversion between the electronic paper and the ESP32 microco...
2021.03.17
Electronics

Until the K155ID1 is controlled by the ESP 32 and the 2 digit Nixie tube IN - 12B is dynamically lit.

I have the substrate for the nixie tube and the K1551 ID 1 for the control IC, I want to control the nixie tube usin...
2021.03.17
Electronics

ESP 32 - WROVWE - B Gets 4 MB Of Memory

We purchased ESP 32 - WROVER - B, which preserves the functionality of ESP 32 and has an additional 8 mb of PSRAM (p...
2021.03.17
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