When I built the NTP Clock project two years ago, I did a quick estimation that the battery will last for about 80 days for a single charge. I was wrong, it only last for 47 days. Of course, my original estimation was not precise but I was wondering why my estimation was far away from my estimation, so I recently decided to take a closer look. Continue reading "NTP Clock Project Revisit and ESP8266 RTC Memory"
For many makers, a project idea sometime may take a very long time to materialised. This project for creating a STM32G070-based PalpTop handheld took me almost a year, starting from the initial idea, to making the final PCB, and still not 100% completed yet. Continue reading "Build a PalmTop handheld with STM32G070"
The megaTinyCore work great when using with Arduino IDE, but not so with PlatformIO. This is my quest on making the megaTinyCore work for PlatformIO. Continue reading "Make megaTinyCore work for PlatformIO"
I had a classic Ikea clock that damaged by the leaking battery, during the new year cleaning, my family decided to throw it away, I took it back from trash bin and thinking of a weekend tinkering project to turn it into a digital clock. Continue reading "ESP8266 NTP clock with NTP update and Charlieplexing"
I have been using STM32CubeIDE for my STM32 development for past a couple of years, and there are things that I like about the IDE but there are also things that I don't like about it. In this blog I'd like to discuss how I setup the IDE to overcome some of the things that I don't like about the IDE. Continue reading "A better way to setup STM32CubeIDE"
Recently I got two STM32 LoRa Discovery boards(B-L072Z-LRWAN1) for my LoRa project, and I need to install STM32CubeIDE and an STM32 Expansion Package i-cube-lrwan in order to use the board. It took me a while to figure out everything and I thought it would be good to share how I set everything up. Continue reading "How to Install STM32CubeIDE on Mac and STM32 LoRa Discovery Kit"
ATtiny3217 is a modern AVR microcontroller chip from Microchip that could potentially replace ATmega328p that is widely used in official Arduino boards, and here is how I build an Arduino compatible development board based on ATtiny3217. Continue reading "Arduino-Compatible Development Board with ATtiny3217"
This is the second part of the two-parts review on Seeed Studio's ph and EC Sensor Kits. In this part, I will take a closer look at EC Sensor Kit and how to measure EC with an Arduino. Continue reading "A review on Seeed Studio pH and EC Sensor Kits – Part 2"
For the past several months, I've been searching for a cost-effective pH and EC sensor kit and I evaluate Seeed Studio's new pH sensor kit and EC sensor kit this week. Continue reading "A review on Seeed Studio pH and EC Sensor Kits – Part 1"
I recently did a range test over a pair of ESP-01 running ESP-Now, by no means its a comprehensive test, but it gives a better understanding of ESP-01 wireless performance and the ESP-Now protocol. Continue reading "ESP-01 Range Test with ESP-Now Protocol"