149 Results for "NRF52832"

Time Machine Mk. IV
Details from Time Machine Mk. IV
Full write-up on my website, including imgur gallery and github repo: https://iamericmin.github.io/tm4.htmlHARDWARE On the hardware side of things, the watch houses a Nordic nRF52832 SoC. It is an ultra low-energy System-on-a-Chip that has built-in Bluetooth...

Still alive, new nrf module, USB-C version
Log from Bluetooth Gamepad Phone Case
This project has been on hold for over a year so I could deal with life stuff. I'm getting back on track. It's time for a new module. I'm upgrading to the nrf52 series which should fix RAM usage, allow me to use an updated SoftDevice, and possibly use...

Expansion board prototype
Log from Triggy - Sensor Node for Life Automation
The first expansion board is ready and seems functional. Only 2 components need to be soldered: the 6-pin header (male) to be plugged on the main Triggy board, and the light sensor. The remaining part of the board is the rain/water sensor. It is composed...

Firmware development update
Log from Highly-wearable Heart Rate Monitor
It took me some time to adjust it but now it works: the C code embedded on the nRF52832 is working fine: every 1/64 second, a pulse is generated on the IR LED. The ADC measures the voltage at the IR receiver, which is slightly modified by the proportion...

Making Torrus easy to program
Log from Torrus - One VR Controller to rule them all
Now we are really getting started here ! How to program Torrus ? Torrus is based on an nRF52832, and is usually programmed in C using an interface chip called CMSIS-DAP. That programming chip can be found in nRF52 dev kit for ~50$, but I think we could...

V4 tested and a note on Adafruit nRF52 Arduino Board Lib Ver
Log from Wireless BLE Kinesis Advantage (Custom Controller)
Finally got around to actually building a V4 Board and it works. *master* branch requires no modifications. If you're building this board, note that you need the following: - nRF52 Feather Express (nRF52832 *not nrf52840*) - Install *version 0..8.6*...

Rubble Watch
Details from Rubble Watch
Core Design Principles Minimal features: Time, Calendar, NotificationsAlways-on displayLong (days+) battery lifeHacker-friendly, reproduciblePlanned iterations (see Project Logs):Breadboard with basic timekeeping, MCU and display (done)Self-contained...

32-Bit & Wireless: The Pro Mini nRF52
Log from Searching for a better Pro Mini
Above: Pro Mini nRF52 (right) shown next to a Pro Mini 328p clone (left). (Note: An early development Pro Mini nRF52 shown with edge SMA, through-hole and U.Fl antenna pads.) In the beginning Shortly after the Pro Mini XL was born, I could feel the...

How to connect BLE device with a computer
Log from Movuino
At the beginning of the project (in 2012) their was 2 technical challenges to overcome concerning bluetooth : it was bluetooth 2.5 so it was impossible to connect with ios devices without MFI (too expensive for makers/scientists). In addition it was...

Power Consumption Table
Log from Triggy - Sensor Node for Life Automation
Now that we have optimized the firmware embedded on the nRF52832, we are able to perform nearly final power consumption measurements. These have been done in all three modes of operation. The connected mode consumption has been measured with a Nexus...

Triggy board v0.2
Log from Triggy - Sensor Node for Life Automation
Hello everybody,I made a new version of the Triggy board and I've just populated it with the parts (no change on the part list). Everything seems OK with this new board, in particular the antenna matching which provides correct output power. Here are...

Highly-wearable Heart Rate Monitor
Details from Highly-wearable Heart Rate Monitor
Sensing MethodThe sensor will be based on the classical infrared reflection method (photoplethysmography or PPG). Initially I planned to use a piezo sensor for its low cost and low power consumption (passive sensor). The method is described in this interesting...

MCU and wireless
Log from ADITI:Affordable Diagnostic Thermal Incubator
We have used the particle photon for building our prototype.For processing the data it has powerful STM32F205 microcontroller is used for interfacing various sensors. Sleep modes are used frequently to increase the battery life of the wearable. It has...

Some progress
Log from Skoobot
I made a silly mistake and messed up the switch on the robot pcb. The rework makes the robot look bad, so this is no good for the Kickstarter, so I fixed it and will do a new pcb spin.I have a shout out to PCB Pool, my board manufacturer, about a couple...

Hacking a $25 nRF51 ARM Cortex Activity Tracker
Details from Hacking a $25 nRF51 ARM Cortex Activity Tracker
Check out my latest project Hacking Wearables for Medical Device Development. Inexpensive Arduino compatible nRF52 prototyping platform used by MATTER Lab. Tutorials & code for gesture recognition and machine learning. M3 Specs: Display: 0.69" 16*64...

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