Update 12.06.18 - pics of the new board Not much cleaning done so far. They'll get their proper isopropanol cleaning when fully populated! top side with 18650 cell (LG-2) bottom side ---------- more ---------- Just soldered one of the new boards and...
For some reason the 47 pF value for the caps is sitting in my mind. Either after 'calibration' the LC meter is so far off that it read both my TI-89's and my V200's caps 51 pf, both ~8% high, or both of them are within their 10% tolerance and reading...
Tonight I gathered some reference/research material for this project. Fortunately, several others have done some really great work with this module, so here's credit to them: LTC3780 DatasheetBeyond Logic blog postTemplaro blog postGreat Scott videoJulien...
Long ago when I started prototyping ideas, I was using a $89 FPGA Board (Avnet LX9 board). The ChipWhisperer system has always supported this board, but it's not as well documented as my newer, fancier hardware. I wanted to make a log post to demonstrate...
Size: about 50x50mm (size of condoms I have, could be a little larger if required)Layers: preferrably a single 2-layer PCB, for easier ordering at the usual suspects in ChinaConnections: debug UARTMicroUSB for charging the batterytemperature sensor connectortwo...
FlexSEA-Plan is an embedded computer used for high-level computing. It boasts a powerful processor and can run an operating system such as Linux. Developing code on this platform is similar to the regular (i.e. non-embedded) software development process....
I modified Android application and Control Unit firmware so that front lights can also be controlled (brightness, blinking mode) via Bluetooth. Previously only rear lights settings were being sent from the phone. Now Control Unit receives all the settings...
I've redesigned the way screens/apps are handled and introduced a main menu. More importantly, I have managed to get the average current consumption down to 350-550uA (1.5mA previously)! Turns out a huge chunk of it - 800uA, was a bug in the TWI (I2C)...
I ended up using the key combination for On and Mode (it seemed appropriate) to change the mode, which basically is between TI-83 keyboard mode for the TI-83 emulator and Regular mode which allows through various submodes access to just about all of...
I sent out the Headband Sensor Package Version 0.89 PCB's to OSH Park, Got three purple PCB's back, and they look great! The top and bottom of the boards look pretty good. I could have flipped the resistor silkscreen (the R1, R2 and R3),...
Improving mocks I have decided to use Rust for mocking libcmfwk and libshmem_manager, as it is the language I am most comfortable with. By creating accurate mocks for these libraries, I aim to resolve the issue where camctld hangs while trying to send...
When the first ideas for this Cyerdeck came up, I was already sure to create it modular, as much as possible. As such I had defined the following requirements for myself:All "Modules" MUSTbe easily replaced for future improvements, modification...
I've been testing the deep sleep mode on the ESP-03. I loaded the frankenstein firmware from here https://github.com/nekromant/esp8266-frankenstein onto the module to test the deep sleep mode.Note, you need to tie gpio15 to GND in order to boot any firmware...
So since the Teensy++ 2.0 bootloader is not available and I'm not feeling comfortable to learn all the bells and whistles of USB communications I was looking for other options. Googling "at90usb1287 arduino" I found this https://github.com/mattairtech/ArduinoCore-avr...
With the compass functionality tested on a breadboard, the next step is to transfer it to a universal prototyping board, adding a status display and IO expansion ports to drive a LED ring that simulates the horizon. For the board, I am going to use the...