Battery on my Surface Pro 3

Surface Pro 3 has a Kiosk Mode to save the battery

Saleae Logic Analyzer – First Impressions

Using a logic analyzer is a new experience for me. And it seems I got a really good one which is also very programmable.

PCF8583 and Espruino

Use the real time clock PCF8583 with Espruino

Blynk and M5Stack

Using my M5Stack with Blynk makes sense: it has plenty sensors and a display and LEDs. Update M5Stack firmware to v1.7.0 via the M5Burner Have ampy installed Download BlynkLib.py from https://github.com/vshymanskyy/blynk-library-python Set your M5 into “APP Mode” to be able to use the REPL reliably (boot, hit Setup button, select mode, reboot) Upload BlynkLib.py: Now

Blynk IoT Platform

Yesterday I read an article about blink(1) which is essentially a USB connected and controlled RGB LED light. I got some ESP8266 and some WS2812 LEDs to do the same, and it even can connect via WiFi and the Internet. So that’ll what do on Sunday. Somehow I arrived at Blynk which is a totally

Benchmarks!

A quick and non-micro benchmark to figure out how the ARM and AMD CPUs I have and what AWS has relate to each other in terms of single-thread performance. Comparison is between AWS t4g-micro (1 CPU) IBM M75q (Ryzen 5 3400GE @ 3.3 GHz) NanoPi R2S (RK3328, 4xCortex A53 @ 1.3GHz, 64 bit) CubieTruck (AllWinner

NanoPi R2S: My First ARMv8

Got a NanoPi R2S. Really nice little machine which does not overheat.

USB Checker QWAY U2P

USB QC and PD can use 5V, 9V, 12V, 15V, 20V at various Ampere from 0.5 to 5, but when you want to know which charger offers what and how much does that device actually use, you are mostly hoping for the best. A fix is some measurement device. Like the QWAY U2P (AKA WITRN

Fixing a Nintendo Pro Controller – Part 2

While I ordered a replacement joystick potentiometer slider (see my post from last week), I thought that you could also simply move one slider from a less used joystick axis to the one used most (left joystick, up-down direction). Much less used is the right joystick up-down). So I open the joystick again, bent off

Fixing a Nintendo Switch Pro Controller

Came across this thread on reddit about fixing the Pro Controller for the Nintendo Switch. While I don’t have yet a problem, it’s good to know what fails and how to fix it when it happens. The main information is in those pictures. The sliders are actually replaceable without having to de-solder the joystick. Get