Tag: LCD

Voltlog #273 – InTheMail

Welcome to a new InTheMail, the series that will touch both your passion for electronics and your bank account at the same time. Before I get started I’m gonna take a second to reminding you to subscribe to the channel and hit the bell notification icon because that’s the only way you will know for sure when I upload new videos. Now let’s start with this small esp32 based development board, it has a built-in 1.14 inch color tft lcd and I think that’s a nice feature of this dev board because if you want to connect some sensors and see the readings in real time, you don’t need to wire a display externally it’s built-in.

Another cool feature is that we have built-in battery charging at 500mA and you can power this board through the provided two pin jst connector with a one cell lipo battery which will then charge when connected to power via the USB Type-C port. There is also a CP2104 for the usb to serial conversion and that makes it a pretty well balanced development board for the ESP32.

The board comes loaded with a test program from TTGO, it shows this image then cycles through red, green, blue on the LCD which is a good idea because you can verify the board is functioning ok after the long journey it takes from the market in shenzhen to your door and we all know how well these packages are protected during shipping.

Voltlog #228 – LIDL UltimateSpeed Car Battery Charger Teardown

It’s been a long time since we looked at a product from LIDL so today I have this lead acid battery charger which I got for about $16. From time to time they have these collections of automotive related products, they had this charger among other stuff but it really caught my eye because of this marketing wank which is printed on the box, this thing has a FLIRT Processor and if you were wondering what the hell is a FLIRT processor, it’s a FULL LOGIC INTELLIGENT REGULATION TECHNOLOGY which in my opinion sounds like the kind of title you would find stuffed with keywords on Aliexpress, except they made it an acronym and slapped a chip icon next to it.

Voltlog #200 – InTheMail

Welcome to a new voltlog, the first one in 2019 and what better way to start the year than with a InTheMail video the series that will touch both your passion for electronics and your bank account at the same time. As some of you might know I’ve recently created my patreon page so for those that would like to support me making these videos, you will find a link the description below, any pledge amount is appreciated, even 1$, just imagine half of my subscribers pledging 1$ a month. And if you can’t offer any donations, that’s fine too, my content will continue to be free.

Links for all of the items shown in the video will be in the video description, on youtube.

Voltlog #172 – InTheMail

Welcome to a new InTheMail the series that will touch both your passion for electronics and your bank account at the same time.

Here are links to all the products shown in this video:

 

Voltlog #136 – InTheMail

Welcome to a new InTheMail the series that will touch both your passion for electronics and your bank account at the same time. People seem to like this starting line so I’ll keep using it, it’s the truth anyway so why not.

Here is a list with links to all the items shown in this video:

Voltlog #127 – 0-60V 0-10A 1mV 1mA Panel Meter Review

So I discovered this module a few months ago and it’s been sitting in a box since then, I almost forgot about it, until a few days ago when I decided it will be a good idea to do a video on the subject.

Let me give you a few details on the specs of this module and as usual it’s pretty difficult to find the information as it’s the case with every new module coming out of China. First of all we have an input range of 0-60V and 0-10A and a 5V rail is needed to power the module itself. It has a voltage measuring accuracy of ±0.2% + 0.2% full scale which sounds strange because these figures are usually given in a percentage plus or minus a number of least significant digits. The current measuring accuracy is ±0.4% + 0.3% full scale.

The meter is basically capable of measuring with a resolution of 1mv and 1mA (however the accuracy is quite bad, as shown in the video) which is quite nice and useful (not really useful with bad accuracy) for projects like DIY power supplies or DIY electronic loads. It can also display the power in watts with a resolution of 1mW as well as showing the load impedance.

Here are some links to this product:

Voltlog #120 – Mini DC Power Supply Review

So I guess a gadget like this is worth 10$ because you could replace that linear breadboard power supply with a more efficient one, which will give you voltage and current display as well as adjustable output.

Here are some images I took during the teardown of the mini power supply:

 

 

 

 

 

 

 

Checkout this power supply from the links below:

60W Electronic Dummy Load Battery Tester:

Voltlog #119 – NEW 150W Dummy Load Review

Today we are taking a look at yet another electronic load. I found this one on Aliexpress, I think it’s a rather new model so let’s see what it can do.

Here are links to the 150W and the 180W version of this dummy load:

Voltlog #108 – 150W Electronic Load Review

I never expected this electronic dummy load to be so bad because I kinda liked the way it’s built and how it looks. Unfortunately it’s way out of spec on the measurements and also has some firmware bugs.

150W Electronic Load Buying Links:

60W Electronic Load Buying Links:

And here a short user manual that I wrote: PDF