Yesterday I assembled the Wac0m RipOff BLE edition (video coming soon). finally I can finish this project. It's turned out that the BLE version is lighter than my USB version (well, this time I used less plywood board than before). The Hackaday.io project is available here (plus link to GitHub). And here are some pics … Continue reading Wac0m RipOff BLE edition is completed (sort of).
After the my video about replacing battery to my Lenovo yoga book that I also mention the fuel gauge chip, I want to correct something and also more additional info that will be here. The on-board silkscreen "HDQ+" is actuall HDQ and + (cells positive) and addition to that the pinout is (-)(SDA)(SCL)(ThermoSensor)(HDQ)(+). So let's … Continue reading BQ27541 HACKED! : Fuel Gauge that cost me 1 night and 1 day.
Here's some example running on my STM32F3 Disco board, still need to test the SPI1 RX DMA (host send 160x39 pixels of data to STM32). Code is at my repo : VFDHack32. Capable of text printing. Here's my crappy hardware setup. I still need to test the SPI1 RX dma capability. Probably write some Linux … Continue reading VFDHack32 MN15439A.
Secret is finally revealed, I be able to correctly drive the MN15439A. It's turned out that the shift register is 288-bit wide, not 286-bit as I thought. Which is identically same size as MN14440A (just the vetical pixels number and grid number are different). I already made the commit to STM8 code on the STM8L … Continue reading First light on MN15439A.
Following my latest post about Wacom i2c. I actually build the working prototype Plug 'n' Play USB HID. For some reason I totally forgot to post it here, but instead It's on Hackaday.io Rightnow, I'm waiting for the nRF51822-04 module to arrive. But the code is already in my GitHub Wac0mRipoffBLE repo.
Hi, welcom back again to my another blog post. Today I will take you through my second time trying to reverse engineering something after the MN15439A vfd. This time, It's the hardware reverse engineering that I've been waiting for almost 2 years to have a chance to do that. I mean, I have a chance … Continue reading Wacom EMR I2C : HACKED!
Hi, It's quite a while now, and it been ~1 year since I bought Lichee pi nano and tried to upgrade from 16M SPI-NOR flash to QSPI-NAND W25N01GV 128M flash, I f**ked around with U-boot for year to make it boot but I didn't until 10 days ago (from the time of writing). I can … Continue reading Lichee Pi Nano with W25N01GV support [Complete Guide]
For anyone who already own this display and having stm32 in-hand. I'm appreciate to get help from you testing the driver. Recently, I came across the display that I've been waiting to buy since last year. It's SHARP Memory Display. I first saw this on WaveShare AliExpress store and it was 128x128 pixels (iirc) up … Continue reading SHARP Memory LCD with STM32F3
ComeNCapture is a small project, Quick and Dirty logic analyzer based on STM8L mcu. I wrote a little code for this project. Using timer 4 interrupt for adjustable data sampling rate. By manipulating 2 variables, ARR and prescaler. By using USART and baud rate of 115200. With USART interrupt, I can control when to start … Continue reading New project : ComeNCapture
Chapter 1 : Beginning 6 years ago. I got the old CD car player made by SONY. It's CDX-GT700D and this CD car play having such a fascinating feature. That is the Graphical Display with the the Blue-ish like 488nm laser ! So I don't delay de-solder-ed that day. removing the display and thrown the … Continue reading Six years of finding the datasheet and pinout of the MN15439A