Category: measuring equipment

16 Bit I2C ADS1115 Module ADC 4 channel with Pro Gain Amplifier RPi (WHL #26)

Meep. We finally have a new product review, after all that editorial, recap and electronic load rubbish ;)

Today’s item in the mail is an I²C ADC on a small PCB, running four channels (or two differential ones) with 16 bit precision. Sounds nice? Well, if it holds the claimed specs, it IS a nice product! I bought it in mid-June on AliExpress for 2.06 USD. Adafruit, by the way, charges 15 bucks for the exact same thing. Do I smell profit margin?

Here’s how it looks straight out of the ESD bag:

Backside is a tad boring (keep the VDD in mind):

(there’s a floating island on the GND plane, boo!)

So, what does the friendly Asian seller claim? […]


USB detector 3.0 High voltage 4 bit OLED QC 2.0 Digital detector voltmeter ammeter voltage current power capacity tester meter (WHL #17)

New at Wan Hung Lo:

…wait, what?

(I’m pretty sure you’ll be able to find my address if you want to, just making it a little harder for google to index it as an image…)

So, what is it actually? Sure, it’s the USB power meter from the blog title. Who would have thought!
Bloody kids with USB 3 toys! Back in my days, we had…umm, good old RS-232 :lol:

I bought this one month ago at AliExpress for 8,61€ including shipping. As you can see, they decided to use some tracked mailing instead of the “ah, no worries” cheapo variant. […]


New at Wan Hung Lo: Open Source Hardware! Presenting the USB A-to-Micro bridge (WHL #4) (updated)

Oh well, I already announced it’s gonna be fake. But the other way round ;)

A while back, I saw the USB A-to-Micro bridge from youritronics. I already own one of these medium quality USB power meters that display voltage and current in an alternating fashion every few seconds. But complete control over power, data lines and also shielding is new. So I wanted one. In the short comment section however, someone noted that the signal routing probably isn’t the best. I had some spare time after Christmas this year, and I also wanted to test the Platinensammler (PCB aggregator) service from Jakob Kleinen. […]