use gruvin as base for mods?
Posted: Thu Jan 19, 2012 9:52 pm
Hi,
for the last couple days/weeks I have been digging into the various flavours of t9x firmwares. I am trying to decide on which variant to choose as a starting point. As the changes I want to do require hardware mods, I have come to think the gruvin board with its extended ports/cpu might be ideal because I do not have to worry too much about hardware limitations from the start (radioclone warned me it already uses full capacity of hardware, so no space left for add-ons).
I want to do 3 things (my background is some MultiWii hacking):
a)
attach via TTL Serial; is that possible a color touchscreen. That device has possibility to offload some logic to its own cpu or I could use it to just display the GUI and send button events down to the t9x.
b)
attach gyro+acc 6DOF IMU to optionally steer by tilting/rotating the tx. Preferred method would be i2c.
c)
read telemetry data from model via a BT device, attach this BT via TTL Serial.
From this stem some questions I could not easily find answers for:
is the current gruvin hardware/firmware kinda stable?
How many serial ports are free to use?
How many i/o ports are free?
Is i2c usable or somehow taken already (like pins used for other purposes)?
Thanks, Hamburger
for the last couple days/weeks I have been digging into the various flavours of t9x firmwares. I am trying to decide on which variant to choose as a starting point. As the changes I want to do require hardware mods, I have come to think the gruvin board with its extended ports/cpu might be ideal because I do not have to worry too much about hardware limitations from the start (radioclone warned me it already uses full capacity of hardware, so no space left for add-ons).
I want to do 3 things (my background is some MultiWii hacking):
a)
attach via TTL Serial; is that possible a color touchscreen. That device has possibility to offload some logic to its own cpu or I could use it to just display the GUI and send button events down to the t9x.
b)
attach gyro+acc 6DOF IMU to optionally steer by tilting/rotating the tx. Preferred method would be i2c.
c)
read telemetry data from model via a BT device, attach this BT via TTL Serial.
From this stem some questions I could not easily find answers for:
is the current gruvin hardware/firmware kinda stable?
How many serial ports are free to use?
How many i/o ports are free?
Is i2c usable or somehow taken already (like pins used for other purposes)?
Thanks, Hamburger