RFM69 radio module working (driver needs some polishing) + (1) ESC control ok
Bad luck, I started with a dead ESC (which I was convinced was working), and, since it was my first shot at PWM with ChibiOs, […]
Articles by Ch. Tronche
Building a prototype first
I’m restarting the project and building a scaled-down prototype first to solve all the software problem on a cheaper model. I’ve settled on STM32F4(46) for […]
resulting PCB
I added a TMP 36 probe in the process to have the on-board (capsule) temperature, as opposed to the BMP 180 giving the OAT (Outside […]
back to Afro ESC (for 22V operations) + feedback frequency
The basic Afro ESC doesn’t support enough voltage for my needs (the solar panel can deliver as much as 22V). I tried the Spider ESC, […]
They did it !
Seacharger crossed the Pacific Ocean from California to Hawai. Clic here to read everything about this great achievement.
30cm linear servo (actuator) driven by arduino nano + H-bridge
For the Almabraxas boat, I dropped the idea of using a rudder in favor of a differential thruster system, because I think the rudder control […]
1st solar powered test
Some thoughts and observations after a first run The ESC First and foremost, I poorly dimensioned the ESC since the afroESC 30A is rated LiPo […]
Need for a UVLO
I gave a first shot at prototyping with a teensy, R78 for power regulation, an Attopilot voltage + current sensor and an Olimex LCD display, […]
Fixed GPS value encoding for telemetry transmission
I had stupidly assumed the values from the GPS were decimal while they really are DDmm.